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PMA, short for polymethacrylic acid, didn’t show up out of nowhere. Like most high-value industrial chemicals, its roots stretch back to early 20th-century curiosity about acrylic polymers. Chemists started exploring methacrylic acid derivatives a century ago. By the mid-1900s, advances in organic synthesis opened the doors to large-scale polymerization of methacrylic acid into PMA, which offered a useful blend of solubility, reactivity, and versatility. Rapid expansion in plastics and coatings industries drove research into new uses. If you trace the market, you see each bump coinciding with changes in manufacturing, such as the move away from natural adhesives toward synthetic alternatives that didn’t degrade so easily. From the 1970s onward, industries from water treatment to electronics began to see value in PMA’s water-absorbing power and ability to form films. Over the decades, researchers constantly tweaked the manufacturing process, searching for better purity and more predictable properties. These slow, steady steps gave rise to the modern uses we see today.
In the warehouse or the laboratory, PMA most often comes across as a dry, white to off-white powder, or sometimes as a colorless to pale yellow viscous liquid. People working with this material know it for its high molecular weight and its ability to dissolve in water at a wide range of concentrations. The product itself stands out from the crowd of synthetic polymers because it manages to combine strong polyelectrolyte characteristics with enough chemical rigidity to remain stable under challenging conditions. Packaging takes the form of high-barrier sacks or drums, always labeled for moisture sensitivity — no one wants a clump of polymer where they expected free-flowing powder. In the supply chain, PMA’s different grades are kept apart, each targeting a slightly different end-use, such as dispersants for industrial water treatment, binders for ceramics, and thickeners for household products.
Anyone working with PMA notices its strong hygroscopic nature. Leave it out, and it’ll suck water out of the air, turning powder into sticky cakes. Its glass transition temperature typically falls between 100°C and 140°C, depending on molecular weight and specific formulation. Drop it in water, and you get a clear, viscous solution, perfect for controlling the flow and mix of other ingredients. Its carboxylic acid backbone, punctuated along the polymer chain, gives PMA lively acid-base chemistry. Solubility isn’t limited to pure water; PMA behaves well in polar organic solvents like lower alcohols, opening extra options for process engineers. Chemically, the polymer backbone does not handle strong oxidizing agents well and may break down under conditions of extreme acidity or high heat. That acid functionality, though, gives it a key role in chelating metal ions and helping regulate pH in a controlled way. Density usually lands near 1.2 g/cm³ in dry form, with molecular weights commonly ranging from several thousand to hundreds of thousands daltons, tailored for the task at hand.
Technical quality comes down to tangible numbers. Polymer content — often above 90% for industrial grades — must stay high for consistent performance. Free acid content, molecular weight distribution, and residual monomer levels all appear on the certificate of analysis, giving users a clear sense of purity and reliability. Moisture content too high can spell trouble, so manufacturers measure that closely, aiming for less than 5%. Some suppliers specialize in ultra-high molecular weight grades for applications requiring greater viscosity. On every sack and drum, labels feature hazard information, batch numbers for traceability, manufacturer contact info, and compliance logos covering REACH, GHS, or specific local regulatory milestones. Users find safety data sheets easy to access, with explicit instructions on storage and handling.
Standard production of PMA depends on free-radical polymerization. Producers start with pure methacrylic acid, mix in an initiator (usually organic peroxides or azo compounds), and run the process under a nitrogen blanket to keep oxygen out of the reaction. Temperatures commonly run between 50°C and 80°C to balance reaction speed with side-product control. Customers demand consistent product, so reactors track temperature, mixing rates, and conversion closely. After polymerization, the process often adds a neutralizer to produce partially neutralized salts, which opens new application doors. Using proprietary filtration and drying stages, manufacturers purify and process the final product to remove unreacted monomer and control particle size. Waste streams, especially wash liquors, must meet local environmental codes before disposal, adding yet another layer of technical oversight.
In a chemical sense, PMA serves as a platform for creativity. Laboratories modify its backbone by grafting with other vinyl monomers, producing copolymers that tune water solubility, charge density, or gel-forming behavior. Amidation reactions using amine reagents help produce derivatives that show off different solubility or complexation abilities. Crosslinking, carried out with small-molecule reagents or UV irradiation, creates water-insoluble networks used for superabsorbent applications. The carboxyl groups lend themselves to straightforward esterification, which can dramatically reduce water uptake and change the flow and surface behavior of the material. With strong acids or bases, PMA undergoes hydrolysis that may alter chain length and charge profile, shifting performance in different environments like detergents or personal care products. Its reactivity with metal ions brings value in water treatment, but also brings caution in the presence of high concentrations of calcium or magnesium, which can precipitate complexes and limit practical use.
Trade names for PMA vary by manufacturer and regional market. You’ll spot it sold as "PMAA," "Polymethacrylic Acid," or "Acrylic Acid, 2-Methyl-, Polymer." Some global chemical suppliers use proprietary labels or packaging codes to distinguish PMA grades for pharmaceuticals, water treatment, ceramics, and oilfield chemicals. In technical literature, the abbreviation PMA appears regularly alongside chemical abstracts numbers and regulatory IDs, making cross-referencing possible across regions and supply chains. Market familiarity ensures little confusion, as long as buyers stick to reputable supply networks and insist on full traceability of raw materials.
Working with PMA requires respect for chemical safety rules. Uncontrolled dust can irritate eyes, skin, and airways, especially for workers who handle large quantities. Proper PPE — gloves, goggles, and dust masks — takes priority in warehouses and blending stations. Material safety data sheets flag PMA as a low acute toxicity chemical, but note its potential to cause skin dryness and mild inflammation on long contact. Some grades contain trace monomers that carry higher hazard profiles, so operators test and clear workplaces according to industrial hygiene guidelines. Storage conditions focus on dry, cool locations with minimal exposure to moisture and sunlight, both of which degrade the product. In case of spills, swift sweeping or vacuuming prevents dust clouds and limits environmental release. Disposal routes require adherence to local regulations, especially for large quantities or waste containing heavy metal residues collected during application.
Across industries, few polymers stretch so far as PMA. Water treatment facilities rely on it as a dispersant, controlling calcium, magnesium, and other impurities to prevent pipe scaling and keep systems running clean. In ceramics and construction, PMA acts as a deflocculant, helping improve mixing of dense mineral slurries so that bricks, tiles, or refractories set smoothly and with fewer defects. Personal care products harness PMA’s thickening properties — ever noticed how sheer gels and facial scrubs keep a stable texture? Odds are good that PMA played a role behind the scenes. Chemical formulators like it in coatings, adhesives, and sealants for its strong bonding and pH responsiveness, keeping things flexible without compromising strength. In oilfields, PMA-based additives lubricate heavy drilling muds and help manage contaminants. Even pharmaceutical scientists experiment with PMA for controlled-release matrices, banking on its compatibility and predictable swelling properties.
Research into PMA never quite stands still. Universities and application labs probe how minute changes in chain length, branching, or degree of neutralization affect solution behavior and practical performance. Recent years have seen work on modification with nanoparticles, hoping to develop smarter, stimulus-responsive gels for agriculture and medicine. Environmental chemists run tests to measure breakdown products and potential impacts on aquatic life. Industrial teams pursue more energy-efficient synthesis, reducing both carbon footprint and waste, driven by customer demand for sustainability. Application scientists focus on blending PMA with natural polymers, seeking hybrid materials with lower cost and tuned performance. The quest extends into bioengineering, where researchers try grafting functional groups onto the backbone to develop selective adsorbents for trace contaminants or targeted drug delivery.
Historically, PMA’s toxicity ranked low, compared to related acrylic and methacrylic compounds. Studies on rodents usually find minimal acute effects, with high thresholds required to trigger observable symptoms. Chronic exposure brings more nuanced risks: repeated skin contact dries and may sensitize the skin, and poorly ventilated spaces mean airborne dust can irritate sensitive airways. Tests on aquatic organisms highlight some localized impact at high concentrations, but breakdown occurs fast enough in most sewage treatment works to minimize environmental threat. In the commercial world, toxicity worries center around residual monomer contamination — here, strict process controls, routine laboratory testing, and batch certifications keep questionable product out of circulation. Regulatory agencies in major markets maintain databases tracking incident reports and set out clear rules for workplace and consumer exposure. Safety-conscious firms put their own teams on regular review of new research, building fresh evidence into user education, application recommendations, and product upgrades.
What comes next for PMA depends on where innovation and market forces point. Growing demand for greener water treatment chemicals opens more doors for biodegradable PMA derivatives. Digital manufacturing — including 3D printing and advanced coatings — wants customizable rheology, so product development leans toward smarter, tunable polymers. Biomedical researchers keep pushing for pH- and temperature-responsive versions, aimed at more precise drug delivery and tissue engineering. On the sustainability front, producers and customers look for recycling opportunities, seeking to close the loop and reduce lifecycle impacts. As global regulations continue tightening, new grades of PMA meet stricter purity and safety criteria, catering to food, pharma, and personal care sectors. The march of technology turns up surprising uses year after year, making it clear that PMA’s story has plenty left to unfold.
PMA, or polymethacrylate, steps into many industries with more practical impact than most recognize. In the pharmaceuticals world, PMA helps shape how tablets release medication in your body. Companies coat pills with PMA to shield active ingredients from stomach acid or to make sure they dissolve at just the right time. I remember my doctor once explaining how certain painkillers work on a slow-release schedule. PMA coatings make that kind of targeted help possible, supporting both patient comfort and treatment reliability.
Folks in the engine oil business rely on PMA too. Oil thickens when it’s cold and thins out in summer heat. To keep engines protected all year, makers add polymethacrylate to oil blends. This keeps viscosity steady and protects metal parts, especially when engines first fire up in January. I’ve lived through Midwest winters, and nothing frustrates more than a car that won’t start due to the cold. The right engine oil, fortified by PMA, means a smoother commute and less worry about engine wear.
Anyone with a can of paint in the garage probably owns something made better by PMA. In paints and coatings, this polymer helps with toughness and weather resistance. I used to scrape chipped paint off an old garden bench every spring; newer products with PMA last longer outside. Construction workers and home DIYers alike appreciate these improved formulas—no one enjoys repeating work because a finish didn’t last through a season.
For me, the real significance of PMA isn’t buried in lab jargon or product brochures. The stuff helps everyday items last longer, work better, and often cost less in the long run. Think about camera lenses, car dashboards, and even stick-on labels—all benefit from scratch resistance and clarity, traits PMA helps deliver. Reliable products aren’t just a bonus. They’re what keep businesses trustworthy and customers satisfied. In the global supply chain, anything that reduces waste or replacement needs has its own environmental bonus. Durable goods mean fewer resources spent and less frustration for everyone.
PMA products come with their share of concerns too. Some manufacturing processes release chemicals we’d rather not breathe. Communities near big plants sometimes smell odd odors on certain days. Regulators in the US, Europe, and Asia now push for cleaner manufacturing steps and better recycling methods. I’ve read about new approaches that cut waste by reusing PMA scrap or switching to less toxic starting materials. Right now, alternatives can cost more, but as demand grows, producers can shift to greener options without hiking prices too much.
As daily life depends more on polymers for medicine, transportation, and even digital tools, PMA stands out as a backbone for progress. Teaching people about materials and how they affect quality makes us less likely to settle for cheap, short-lived products. This knowledge shapes smarter buying choices and encourages industries to innovate. With a push toward cleaner chemistry and tougher goods, the future of PMA might hold fewer compromises and better answers for both health and the planet.
If you’ve spent time working with websites, sooner or later you’ll hit a point where just clicking around in WordPress or another CMS doesn’t cover your needs. Sometimes, you want to take a good look at what’s happening in your database, edit a value or two, maybe import a backup. That’s where a tool like phpMyAdmin turns into a real time-saver. Used by millions, it handles the rough edges of MySQL databases with a simple interface that feels less intimidating than a command line.
No fancy hardware is needed to run phpMyAdmin. If you’ve got a web server with PHP and MySQL, you’ve already covered the basics. These days, a lot of folks run either Apache or Nginx. If you have root access, check your Linux flavor—Debian and Ubuntu use apt, Red Hat folks rely on yum or dnf. Make sure both PHP and MySQL are running, because phpMyAdmin won’t do much without them.
Grab the latest stable release straight from the official phpMyAdmin website. This way, you dodge outdated package versions and get security fixes. Drop the files right into your web server’s document root (maybe /var/www/html, though this varies by setup). Unzip the archive, and rename the resulting directory to something less guessable. Attackers know the word “phpmyadmin”—so call it /db-console or something equally boring.
phpMyAdmin relies on a file called config.inc.php. The sample file (config.sample.inc.php) in the folder provides a blueprint. Copy it over and set up your secret passphrase for cookies. Plug in your blowfish_secret value—pick something random, at least 32 characters. This key helps guard your authentication cookies.
Point phpMyAdmin at your MySQL socket or TCP port, matching what your server uses. Security deserves serious attention here. Avoid letting the tool listen on open interfaces. Consider setting up an .htaccess password, or using your web server config, to limit who even sees the login page.
Plenty of folks, myself included, have left phpMyAdmin wide open to the world in a rush. Bots love scanning for these dashboards, and a weak configuration hands over the keys. The best move I’ve learned—lock it down to specific IPs, and never use root accounts through the web UI. Instead, set up a MySQL user with just enough privileges, nothing more.
Even if you set up everything right the first day, software ages. Update your phpMyAdmin installation often to plug up new holes. Back up your databases before making big changes, since clicking the wrong button can wipe out tables. If your site takes off or needs compliance, look into moving your database to a private network segment.
phpMyAdmin can be a lifesaver, but only for those willing to respect it. Keep your install up-to-date, hide it away behind passwords or IP restrictions, and never use it as a replacement for true database understanding. It’s about making web development smoother and safer, not just easier.
Many businesses use a mix of old and new tools. New products like PMA promise to streamline operations, but switching isn’t as easy as flipping a switch. I’ve helped companies wrestle with legacy programs that don’t play well with modern solutions. It’s a real headache, and getting PMA to fit your stack calls for more than just a checklist.
People often think adding software means instant improvement, but ignored compatibility snags slow everything down. Take integration—does PMA work with what you’re already using? If your architecture includes dated ERP software, some custom APIs might break, leading to expensive troubleshooting. On the other hand, working with newer cloud-based systems gets easier. Vendors sometimes stretch what “integration” means, so it pays to press for details, not glossy sales promises.
Compatibility isn’t just about whether PMA launches. Sometimes, behind-the-scenes friction blocks smooth workflows. At one midsize factory I worked with, a software rollout looked fine on paper. But live data feeds lagged since PMA processed requests slower than the legacy engine. Users received outdated information, inventory piled up, and managers lost confidence in the new tool. These problems don’t turn up until you really peer at your business needs, test things, and talk honestly with the vendor’s support.
There’s also the issue of data formats. Modern platforms love slick dashboards, but if input files from your system use older standards or proprietary codes, migration projects stretch on for months. Data loss or inconsistent outputs damage trust. Review your dependencies. Expect trial runs that uncover whether formats play nicely. I value clear communication between both teams—IT and PMA support—because honest, technical conversations prevent long-term headaches.
Every new tool brings security questions. Regulatory environments shift all the time. If PMA doesn’t follow industry-specific rules, it opens the door to fines or data breaches. Don’t skim this part. Ask your vendor about certifications, audit trails, and data storage. For example, healthcare organizations following HIPAA or manufacturers operating under ISO controls cannot afford gaps. Many teams discover incompatibilities with compliance standards during audits instead of before launching new software.
A good start involves a proof-of-concept. Bring in your IT, legal, and operations folks. Run PMA on a subset of your live data. See how it handles your processes, not a generic demo. Take notes on slowdowns or glitches. Involve front-line users early—surprises show up faster at the desk than in planning meetings.
Long-term support also matters. Ask blunt questions about update cycles, bug fixes, and crossover with other platforms. Some vendors drop features when new versions launch. If your critical process depends on a plug-in, make certain it remains available and updated. Planning for future changes means less panic when internal systems evolve.
Building bridges for compatibility takes work upfront. Mapping out your system architecture highlights potential snags before investing too much time or cash. Leverage pilot programs. Rely on peers—other firms using PMA often share their pitfalls and solutions, usually more honestly than vendors.
Above all, transparency wins. A clear look at your system—warts and all—means every discussion about PMA remains rooted in reality. In my view, this approach turns compatibility from an afterthought into a foundation for smarter, stress-free adoption.
PMA, or Polymethacrylate, pops up in places that don’t make the daily news cycle but really shape how some products work, whether you’re dealing with paints, road markings, or pharmaceutical coatings. From a practical point of view, the standout qualities of PMA draw in both manufacturers and users who want performance they can count on. Years spent around coatings and plastics give me a direct line to how these polymers function and why they matter.
Anyone in construction or surface coatings has tangled with products that break down when the weather gets rough. PMA stands the test not just of time but of sun, rain, and pollution. Its backbone structure shrugs off UV rays, stopping breakdown that leads to fading or cracking. In real-world tests, PMA-coated surfaces stick around longer in tough outdoor conditions—a reason it’s grabbed a spot in both playground markings and road stripes. Studies back this up, showing longer life cycles before repainting becomes necessary, which saves on labor and materials.
Some polymers go brittle or yellow in the sun, turning old before their time. PMA keeps a glass-clear finish, which matters in visual applications like display protectors or art framing. The structure offers up a tricky mix: hard enough to resist scratches, flexible enough to take minor impacts without chipping. In my work with exhibition installations, PMA panels held their look and toughness even with repeated handling—something cheaper plastics didn’t manage.
I’ve seen cleaning crews try to remove graffiti or stains from public benches and walkways. Coatings based on PMA manage to shrug off common cleaning agents and harsh chemicals, so they don’t degrade or lose their gloss over time. This chemical resistance adds up if you’re making products used in labs, kitchens, or anywhere accidents with cleaners or solvents tend to happen. A 2022 review in the Journal of Applied Polymer Science points out that PMA’s resistance reduces replacement frequency.
A big issue with some plastics and coatings is they soak up moisture, ruining both their strength and appearance. PMA hardly takes in water, even under muggy conditions. That keeps it from swelling up, going cloudy, or losing toughness. My experience in humid climates showed PMA outlasted cheaper options during wet seasons, especially in window fittings and bathroom fixtures.
Pharmaceutical producers put a premium on materials that stay inert and don’t react with medications or food. PMA steps up here, letting companies use it in enteric coatings—those smooth capsules that dissolve only in the gut, not the stomach. Regulatory bodies like the FDA point to PMA’s bio-inert qualities as a major benefit for this kind of application. My conversations with colleagues in pharma development highlight lower allergy or irritation risks compared to some older polymers.
The question of sustainability comes up more often now. PMA can be produced using greener processes and sometimes incorporates recycled content, reducing the environmental load compared to older plastic options. While the field isn’t perfect, progress makes PMA a better pick for those trying to balance performance with earth-friendly choices.
From high-definition signage to medical capsules, PMA brings properties that go beyond generic plastic. It handles weather, chemical spills, and UV rays with a kind of calm certainty that keeps products in use longer. Every time manufacturers or product designers choose it, they pick a material with proven results—both in testing labs and, more importantly, out in the world where reliability gets put to work daily.
Looking for solid answers on PMA can leave anyone scratching their head. The internet throws out countless pages and forums, but most only skim the surface. I’ve spent hours sifting through technical blogs and half-finished guides, searching for something solid. The trouble with PMA resources is that so many options fall short—they don’t go past textbook answers, or they’re outdated within a year. Reliable information on any professional tool changes fast, but with PMA, resources often lag behind real industry shifts.
The first place most folks turn is the official documentation. That's often the most trustworthy source because it stays close to new updates and patch releases. Time and again, direct documents answer the hard questions: how to set up modules, fix strange errors, and make tools work together. These pages usually come straight from the developers or a well-maintained team, so even if you’re knee-deep in a tricky setup, you can often find a page or two with step-by-step walkthroughs. Just remember that vendors' sites sometimes lock the best content behind paywalls or user registration, which throws up roadblocks for folks who just need a quick solution.
Googling for answers often leads to forums like Stack Overflow or specialized PMA community boards. My own experience has shown that these discussions can be a goldmine, especially for weird bugs or problems outside the usual scope. Users bring up what the manuals skip—odd software conflicts, permissions headaches, or cases where PMA acts up without an obvious reason. The best answers usually float to the top thanks to upvotes and ongoing replies. Still, you have to be careful. Not every response comes from somebody with the right background, so checking reputations and looking for detailed, reproducible fixes pays off. If you take answers at face value, you could end up making problems worse.
One lesson I've learned: printed guides and old PDFs can let you down fast. Signing up for official webinars or online training events keeps you on your toes. Companies supporting PMA often run live sessions where engineers field live questions. Unlike static documentation, you get practical solutions in real time. During one session, I watched a presenter tackle a tough migration process and take on troubleshooting right on live code. Nothing beats watching those fixes unfold step by step. Plus, these sessions expose you to new features early, long before user guides get revised.
Local tech meetups or user groups often welcome both beginners and old hands working with PMA. I’ve met people at these events who spent years wrestling with stubborn PMA bugs and built their own solutions. These networks offer the human side: real-world fixes, cautionary tales, and the sense that you’re not the only one hitting roadblocks. You can exchange contacts and follow up with support requests, trading tips long after the event wraps up. If there’s anything that inspires confidence, it comes from learning directly from someone who’s fixed a headache you’re facing now.
Getting decent support and documentation for PMA takes patience and a bit of legwork. Bouncing between official manuals, real user stories on forums, live events, and focused networking puts you in the best spot to get the answers you need. There’s no one site or document that covers every single pitfall. But combining the right sources, you end up better prepared to solve problems, handle updates, and share what you’ve learned yourself. Rely on closed circles and you’ll hit dead ends; branch out, and you’ll find the support network you need.
| Names | |
| Preferred IUPAC name | 4-methoxy-1-methyl-2-phenylpropan-2-amine |
| Other names |
NSC-40005 Methallyl p-methoxyphenyl ether NSC40005 |
| Pronunciation | /ˌpiː.emˈeɪ/ |
| Identifiers | |
| CAS Number | 16561-29-8 |
| Beilstein Reference | 3610566 |
| ChEBI | CHEBI:37539 |
| ChEMBL | CHEMBL614 |
| ChemSpider | 2026 |
| DrugBank | DB02794 |
| ECHA InfoCard | 06d44f8b-b847-42dc-812f-bb6c29d1e3b3 |
| EC Number | 601-041-00-5 |
| Gmelin Reference | 379607 |
| KEGG | C03366 |
| MeSH | Pyrrole*MeSH D011693 |
| PubChem CID | 4723 |
| RTECS number | TI3850000 |
| UNII | R1G73003DH |
| UN number | UN1265 |
| CompTox Dashboard (EPA) | DTXSID2020930 |
| Properties | |
| Chemical formula | C10H14N2 |
| Molar mass | 100.12 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Odor | Amine-like |
| Density | 0.94 g/cm³ |
| Solubility in water | Insoluble |
| log P | 1.83 |
| Vapor pressure | 0.49 mmHg (20°C) |
| Acidity (pKa) | -2.2 |
| Basicity (pKb) | 6.69 |
| Magnetic susceptibility (χ) | 1.3×10⁻⁶ |
| Refractive index (nD) | 1.481 |
| Viscosity | 500-700 cP |
| Dipole moment | 1.88 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 146.4 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -189.4 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1899 kJ/mol |
| Pharmacology | |
| ATC code | V03AX03 |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. May cause respiratory irritation. |
| GHS labelling | GHS02, GHS07, GHS08 |
| Pictograms | GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H226, H319, H335 |
| Precautionary statements | P261, P264, P271, P272, P280, P302+P352, P305+P351+P338, P321, P362+P364, P501 |
| NFPA 704 (fire diamond) | 2-3-1 |
| Flash point | > 42°C (Closed cup) |
| Autoignition temperature | 224 °C |
| Explosive limits | Lower: 2.7%, Upper: 10.9% |
| Lethal dose or concentration | LD50 (rat, oral): 21 mg/kg |
| LD50 (median dose) | 90 mg/kg (rat, oral) |
| NIOSH | N95 |
| PEL (Permissible) | 5 mg/m³ |
| REL (Recommended) | 2.0 |
| IDLH (Immediate danger) | 250 ppm |
| Related compounds | |
| Related compounds |
4-Methylmethamphetamine 3,4-Dimethoxyamphetamine Methamphetamine Amphetamine |
