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Years ago, chemists hunting for new synthetic routes began studying benzophenone derivatives, working in cramped labs filled with glassware and the sharp scent of solvents. 2-Amino-5-chlorobenzophenone first appeared on the radar through research targeting better intermediates for pharmaceuticals, dyes, and advanced polymers. Marketed in early literature as a specialty chemical, its key feature—a reactive amino group next to a chlorine-substituted benzene ring—drew attention for modification ease and selective reactivity. Over decades, its use has expanded from a lab curiosity to a foundational block in organic chemistry. Patent archives and journals from the mid-twentieth century highlight a steady uptick in demand, especially where selective amination and halogenation confer tailored activity in drug development.
This compound stands apart for those chasing adaptable building blocks. 2-Amino-5-chlorobenzophenone offers a unique scaffold—melding the robustness of benzophenone with chemically active sites that serve synthetic ambitions. Unlike more generic aromatic ketones, this aromatic system delivers targeted sites for further transformation. In practice, researchers and process chemists reach for it to help streamline routes in drug synthesis, seeking higher yields and clean conversions. In pharma manufacturing, the adaptability of this molecule continues to drive cost-effectiveness and efficiency, particularly in an age chasing sustainable and high-throughput chemical synthesis.
This solid material lands pale yellow with a slight musty odor—anyone who has handled powders on a cold lab bench would recognize the cling it brings to gloves. Its melting point sits well above room temperature, which makes storage and handling predictable for warehouse crews and lab techs alike. The molecular structure offers both a sturdy backbone and reactive positions for new functional groups. Its solubility lies in organic solvents common across synthetic chemistry—think of dimethylformamide, ethanol, chloroform rather than water. This restricts some direct formulations but benefits those looking for selectivity in organic-phase reactions. With reactivity shaped by electron-donating and withdrawing effects, both the amino and chloro groups offer different hooks for functionalization.
On a practical note, 2-amino-5-chlorobenzophenone comes packaged with clear batch records and purity indicators, a direct response to mounting regulatory pressure. Reputable suppliers provide spectral data—NMR, IR, HPLC—so research groups can sidestep surprises and avoid rounds of troubleshooting due to impure lots. Container labels list chemical names, hazard symbols, and recommended storage advice—details that can’t be neglected in any R&D or pilot plant. Consistency in labeling stands as a compliance issue but, more crucially, as a real safety matter on crowded benchtops and busy chemical stores.
Producing 2-amino-5-chlorobenzophenone uses classic organic synthesis, where process flexibility helps meet the volumes dictated by custom and bulk orders. Traditionally, many labs relied on Friedel-Crafts acylation, then introduced amination and chlorination steps on substituted benzenes. Careful temperature control and stoichiometry deliver the needed selectivity, especially where one aromatic ring could, in less disciplined hands, take more modification than intended. Advances in catalysis and solvent systems have trimmed waste and improved atom efficiency. Green chemistry initiatives now challenge older prep methods, nudging manufacturers to revisit reagent choices and solvent recycling—each step shaving off operational costs and minimizing environmental impacts.
Anyone diving into aromatic ketone chemistry finds the interplay of electron-rich and electron-poor regions begging for transformation. With this compound, both nucleophilic and electrophilic attack grow easier on account of the amino and chloro groups. Acylation, sulfonation, and extended coupling reactions turn it into a springboard for azo dyes and advanced drug scaffolds. In my own bench work, tweaking the amino group often gave faster routes to substituted imines and heterocycles. The chloro position—unforgiving to careless handling—lets one hook on more complex fragments via palladium-catalyzed cross-coupling, opening doors to medicinal chemistry. Clean conversions and selective activation define most scale-ups and frequently save both time and resources in industrial settings.
Diversity in naming often muddies the waters for those hunting specific compounds in catalogs or literature. Common trade and lab names cover variations like 2-amino-5-chlorodiphenylketone or 5-chloro-2-aminobenzophenone. Knowing synonyms saves more than money; it guards against ordering errors and miscommunication in multi-disciplinary teams. Over decades, these alternate names keep cropping up in patent filings, process descriptions, and regulatory registers, reminding those in procurement or compliance to double-check material identities every time new stock rolls in.
Worker safety depends on careful adherence to protocols developed after lessons written in trial and error. Chlorinated aromatic amines fall under scrutiny for skin and respiratory sensitization. The powdered solid calls for gloves, goggles, and tight-fitting masks—a point any lab supervisor will hammer home. Spills and dust need prompt, methodical cleanup to avoid both exposure and environmental release. Disposal regulations align with those for other organochlorine intermediates, where compliance dovetails with community and worker health. In my own lab, we reviewed updated safety standards annually, and disciplinary action followed for shortcuts. Regular audits, updated MSDS files, and open-door reporting lines keep preventable accidents at bay and build trust between bench chemists and management.
The market footprint for 2-amino-5-chlorobenzophenone has only grown. Its most recognized use lies as an intermediate in drug discovery, bridging aromatic rings in sedatives, antihistamines, and other actives under study. Dye manufacturers value its core structure for producing vivid, stable colorants in textiles and inks. Specialty polymers benefit as well; adding functionalized benzophenones helps tailor UV absorption and resistance. Its adaptability draws researchers hunting for niche agrochemicals and advanced coatings, always looking for precursors with strong handles for later modification. In my time collaborating with process chemists, the compound’s ready reactivity often meant fewer steps and cheaper purifications.
Investment in R&D over the past decade points to an ongoing arms race in process intensification and green synthesis for this compound. Screening efforts seek out milder reagents and less hazardous conditions, as the public now demands sustainable chemistry. The pharmaceutical sector, under fierce pressure to contain costs and cut time-to-market, leans heavily on proven synthons like this one. New catalysts sometimes reduce reaction times or improve selectivity, and even minor tweaks can propel patents or drive down waste. Collaboration between academia and industrial labs paid off in recent years, accelerating application scopes and improving scalability. Those tracking published literature in medicinal and material chemistry see 2-amino-5-chlorobenzophenone pop up in reviews—its core structure remains a magnet for innovation.
Concerns about toxicity run deeper than academic exercise; workers and consumers now focus on trace residues and metabolic fate. Aromatic amines, especially those with halogenation, grab regulatory attention for their potential links to mutagenicity or environmental persistence. Animal testing, cell assays, and computational models all contribute data—exposure limits now reflect new findings. Waste management at the plant and pilot scales keeps aiming for near-zero discharge. Sustainable labs lead trials for safer analogs without losing core reactivity. As a bench chemist, I watched regulatory guidance shape purchasing and disposal habits, knowing consumer trust in finished pharma and dyes connects directly to rigorous toxicity controls upstream.
Demand for functionalized aromatic building blocks continues to surge. 2-Amino-5-chlorobenzophenone’s versatility places it on the shortlists for those designing new drugs, dyes, or performance polymers. Pushes for green chemistry and tighter environmental controls promise to reshape how this material gets produced and applied. Companies already scout for safer substitute processes, more recyclable solvents, and alternative disposal routes. Academic labs map new transformations on this reliable scaffold, finding faster or cheaper pathways to known and novel products. As action heads toward safer, cleaner, more efficient chemical production, core intermediates like this one will keep fueling both progress and debate in the search for a smarter, more responsible chemical industry.
Ask someone about 2-Amino-5-chlorobenzophenone and most folks will stare back blankly. The name sounds something out of a chemistry textbook, tucked far from daily life. Still, this chemical quietly supports some big industries, especially pharmaceuticals. It does most of its work behind the scenes, which probably means many people never notice it, but that shouldn’t hide its value.
Pharmaceutical labs rely on building blocks like 2-Amino-5-chlorobenzophenone to craft the drugs people need. This compound steps up as a key intermediate in the synthesis of various medications, most notably anticonvulsants such as clonazepam. Without this chemical, creating certain benzodiazepines would hit a dead end. Years ago, I had a friend whose epilepsy meds helped him keep steady work and spend time outside again. Discovering that compounds like this sit behind these treatments highlights just how crucial chemistry is to health.
Drug discovery crews don’t just care about the final pill. Each intermediate, like 2-Amino-5-chlorobenzophenone, gets scrutinized for how easily it can be made, how safely it travels, and if it reacts as planned. Even a slight hiccup in quality or supply can slow down new drug launches, hitting people waiting on treatment. In the world of complex synthesis, making sure intermediates are available directly impacts patient lives.
Universities and industrial research labs often explore the molecule’s uses beyond medicine. Its backbone shows up in some experiments on advanced organic compounds and specialty dyes. Certain dyes, especially ones built for fabrics or plastics, draw on benzophenone derivatives to improve color stability or light resistance. Even if the consumer never learns the ingredient list, stable dyes help the clothes last, and plastics resist sun damage. Here, the recipe starts with chemicals like 2-Amino-5-chlorobenzophenone.
The role extends into analytical chemistry. Researchers need reliable reference materials, and this compound sometimes figures into those efforts. It helps calibrate scientific machines, enabling accurate measurements worldwide.
If chemicals enter people’s lives by way of medication or clothing, making them safely becomes essential. Exposure to 2-Amino-5-chlorobenzophenone isn’t something to brush off; manufacturers must adopt careful handling and disposal, since mishandling can cause skin and eye irritation or worse if inhaled or ingested. Facilities are expected to train workers well and use protective equipment. This reduces the risk of accidents and long-term health issues.
Waste products from manufacturing can also raise environmental alarms. Several governments have started demanding full traceability in chemical supply chains. Labs and factories retool their methods to feature safer solvents and closed systems, which keeps emissions down and neighborhoods safer. It costs more up front, but in my experience, companies who adopt strict controls gain trust faster and avoid expensive fines.
Chemistry doesn’t stand still. With more pressure for clean manufacturing and demand for new medicines, companies invest in greener synthesis routes for 2-Amino-5-chlorobenzophenone. Some startups work on biological alternatives, hoping to cut out harsh reagents and save energy. Scientists also study its health effects to ensure downstream products stay safe in the long run.
My work with industry partners showed me that every obscure ingredient matters a lot. Even if the public rarely hears these names, the quality and safety of our daily lives often hinge on them. By keeping an eye on how compounds like 2-Amino-5-chlorobenzophenone are made and used, we can get better medicine, safer products, and a cleaner environment.
2-Amino-5-chlorobenzophenone carries the chemical formula C13H10ClNO. Its structure combines three simple elements—carbon, hydrogen, and chlorine—with a hint of nitrogen and oxygen for functional impact. This formula isn’t an exercise in memorization for many people. The balance of atoms in this formula shapes the compound’s identity and possibilities. As someone who’s wrestled through late-night organic chemistry labs, seeing how the formula fits together and influences function makes this far more than a set of letters and numbers.
Looking at 2-Amino-5-chlorobenzophenone, chemists notice its backbone: two benzene rings joined by a ketone group, decorated with an amino group at the 2-position and a chlorine atom at the 5-position. These details make a difference. Move the chlorine or the amino group, and you often change how the molecule acts. In pharmaceutical research, these small changes might alter how a drug interacts with the body. In dye manufacturing, shifting groups can completely change color properties.
The amino group brings in reactivity. Nitrogen's lone pair fuels modifications, making this compound a starting point for more valuable chemicals. The chlorine atom can also join further chemical reactions. Chemists often tweak these groups to build bigger, more complex molecules for medicine or industry. Without C13H10ClNO, several manufacturing and research avenues would lose a key tool.
I’ve run across 2-Amino-5-chlorobenzophenone plenty of times in journals and technical reports. Labs reach for it because it works as a solid intermediate. Drug development often starts with compounds like this. Its structure passes through hands in research facilities and pilot plants, enabling ideas on paper to turn real.
Outside pharmaceuticals, developers use this compound in dyes and pigments. Its flexible structure means you can build out colorful molecules. In research, teams probe its reactions to map new synthetic pathways. It works behind the scenes, quietly powering progress in several scientific fields.
A chemical formula helps only if you understand the corresponding risks. Handling molecules like 2-Amino-5-chlorobenzophenone means being aware of toxicity. That chlorine atom and amino group can present hazards—especially if someone breathes in powder or gets it on the skin. Clearly labeled storage and up-to-date training lower these risks, but mistakes happen fast when safety gear slips or distractions happen.
Sustainability deserves just as much attention. Waste from synthesizing or using chlorinated aromatics—like this molecule—creates headaches for waste treatment teams. Some countries have tight regulations, while others may fall short on monitoring. I’ve watched colleagues grow anxious about their lab’s environmental footprint, pushing for better disposal practices or greener alternatives. Open conversations about chemical lifecycle and disposal keep operations safe and responsible from start to finish.
Teams in industry and academia always look for smarter ways to handle tricky molecules. Substituting safer reagents, redesigning synthesis pathways, and pushing for closed-loop production all help reduce risk and waste. During my work in the lab, small improvements—using local exhaust ventilation or swapping out hazardous reagents—added up to big cultural shifts. The more transparent the process, the easier it gets to teach safe practices and protect both workers and the environment.
2-Amino-5-chlorobenzophenone shows up in labs, mostly as an intermediate for pharmaceuticals and specialty chemicals. Anyone who has worked in a chemistry lab knows substances like this can look harmless on paper. Yet, the reality is that slight molecular changes can mean big differences for human health and safety.
Looking at the available evidence, 2-Amino-5-chlorobenzophenone is not something anyone wants to get careless with. General toxicity data for this compound remains scarce, which by itself should set off some alarm bells. Benzophenone derivatives as a class have drawn regulatory attention for a good reason. Some related substances disrupt hormones, and cases of skin and eye irritation crop up in research. The amino and chloro groups present in this molecule only add more uncertainty about its effects.
OSHA and similar agencies have not published specific exposure limits for this substance, but that does not mean risk goes away. Workers handling powders or dusts related to organic solvents and heterocycles—think toluene, anilines, monochlorinated aromatics—often deal with skin dryness or cracking by the end of the day. Accidental inhalation leads to coughs or worse, even if nothing feels wrong immediately.
Nobody wants a slow-moving chronic poisoning. With many benzophenone analogs, animal studies point to possible carcinogenicity or DNA-damaging effects. I have not seen enough published data to say if this specific molecule shares those dangers. The lack of research stands out, especially since the structure supports easy absorption through the skin or mucous membranes.
Practically, I have seen some grad students show up with rashes after working with chemical intermediates like this in open vessels. Experience tells me the safe move is to put on gloves and use the fume hood, no exceptions. Unknowns matter more than what’s already proven. Labs or plants with mature safety cultures do not wait for a tragedy before practicing caution.
The right way to handle 2-Amino-5-chlorobenzophenone starts with personal protective equipment—gloves, goggles, and a lab coat at a minimum. Any weighing or open transfers belong beneath a ventilated hood. Label containers clearly, so nobody confuses them with more benign reagents. If anything spills, treat it like a spill of a known toxic substance, using absorbent pads and protective gear.
Ventilation needs real attention. Most labs with good airflow and dust control see far fewer health complaints. Emergency wash stations help if exposure happens. It helps everyone to keep good records of quantities used and incidents reported, so trends or risks don’t slip under the radar.
Right now, regulatory agencies label substances like 2-Amino-5-chlorobenzophenone as “hazardous on suspicion.” Plenty of chemists want rigorous data to fill in the gaps. More toxicological research would lay out clear exposure limits, list likely symptoms, and propose clear-cut guidelines. Until then, the safe play is to handle it with respect and caution, much like other aromatic chemical intermediates with unknown risks.
If accidents or unexplained symptoms arise after contact, medical attention should not wait. Transparency, record-keeping, and a rigorous safety culture keep everyone one step ahead of unpleasant surprises.
2-Amino-5-chlorobenzophenone lands on the shelves of many chemistry labs. Folks in pharmaceutical research, specialty chemicals, and academic settings often cross paths with it. I once handled a batch for a synthesis project. I learned fast: overlook a single step in storage, and you deal with clumps, spills, or worse, mystery fumes. The risks aren’t just talk. Skin irritation pops up on safety data sheets. Direct inhalation or contact can set off allergic reactions or chronic health issues.
A shelf in the corner or desk drawer will not do. Just like other ketones and substituted aromatics, 2-Amino-5-chlorobenzophenone prefers a tightly controlled space. From experience, glass is a go-to container—polyethylene or polypropylene serves short-term, but glass holds up against any corrosion or leaks. A screw cap with a secure seal wipes out worries of evaporation.
Colleagues used to stash such compounds in open lab cabinets. Errant elbows sent a bottle down, coating the floor and setting off a round of paperwork and cleanup. Keep that container upright in a locked chemical cabinet, away from the daily hustle. Avoid the sun. Heat from nearby radiators or direct light turns any sensitive substance volatile. Most labs set aside a cool, dry space—think under 25°C, far from sources of moisture.
I remember working overnight in a shared lab. Poor labeling led someone to scoop from the wrong bottle. Mix-ups cost time and money, but cross-contaminating puts entire batches—not to mention people—at risk. Always label the container in large, clear text. Date the bottle, so no one ends up using a dusty, expired sample that started to degrade. If any spills land on surfaces or gloves, fresh air and soap remain your first friends. Have personal protective gear—gloves, goggles, and lab coats—ready near the storage area.
Don’t store 2-Amino-5-chlorobenzophenone next to oxidizing agents or concentrated acids. Most storage mishaps creep up from careless placement. Mix this compound with a strong oxidizer, and you could end up dealing with hazardous byproducts. Segregate by hazard class. Most labs use color-coded cabinets or shelves just to cut confusion in emergencies.
Two years ago, a friend found out the hard way that humidity shortens the shelf life of powders and fine chemicals. A trick I picked up from an old mentor: throw a few silica gel packets in the storage cabinet. Moisture never has a chance. For larger stock, stick a digital humidity and temperature monitor near the bottles. Quick glances at the readout can warn you about creeps in temperature that hit on weekends, especially in buildings with wild HVAC schedules.
Disposal matters just as much as storage. Never pour leftovers down the drain. Closed waste containers kept next to the work area keep things simple. Teams that train together on safety and storage routines rarely face big accidents.
Storing 2-Amino-5-chlorobenzophenone safely shouldn’t slow anyone down. Simple habits—clear labeling, airtight bottles, low humidity, locked cabinets—pay off for every researcher and technician. Reliable routines and common sense stop small mistakes from turning into new stories about chemical mishaps. Safety feels like extra work until it saves a day or two of research, or your well-being.
For anyone managing a chemistry lab, the word “purity” isn’t just a number on a certificate — it’s often a guarantee of the quality and safety of your work. With specialty chemicals like 2-Amino-5-chlorobenzophenone, purity levels can set the tone for accurate results or wasted months of troubleshooting. Some of us remember the scramble after discovering an unexpected contaminant throwing off the GC analysis. In industrial settings, even small impurities can knock an entire process off balance, costing much more than a few moments of lab frustration.
Most suppliers offer 2-Amino-5-chlorobenzophenone with a stated minimum purity, usually above 98%. Occasionally, high-end sources push it a touch above 99%. At a glance, this difference looks tiny, but if you’ve worked with sensitive assays, you know one percent can mean the difference between a clean synthesis and a day spent re-running columns. Unknown or excess impurities can bring unpredictable results — ghost peaks in HPLC reports or failed reactions that don’t make much sense till someone traces the problem back to the stock bottle.
In organic synthesis or pharmaceutical research, even trace contaminants in reagents like this one might stop a reaction, ruin a batch, or mislead the data. Personally, I’ve watched teams lose trust in months of data over an impurity that lurked just beyond the stated minimum analysis. A final product headed for regulatory review must be built on a foundation of trustworthy inputs; any shortcut on raw material quality can come back to haunt later stages.
Relying on supplier certificates alone isn’t enough for most serious applications. Common methods like HPLC, NMR, or GC-MS give a second look at what’s in the bottle, letting the lab confirm whether that 99% claim holds up in practice. Beyond that, checking for specific known contaminants — ones that may have slipped in during synthesis or storage — is routine. If you’re ordering 2-Amino-5-chlorobenzophenone to run a critical reaction, quick in-house checks let you spot problems early and keep projects moving.
Every lab manager learns to demand full documentation—batch analysis, traceability to the original lot, and records of storage conditions. Some companies, especially those serving pharma or fine chemicals, have built out robust quality systems that keep surprises to a minimum. That’s a major lesson: pushing for suppliers who treat quality control not as a one-off task, but an ongoing process, saves time and trust in the long run. Weak points in a supplier’s quality track record should set off alarms before any order is placed.
Quality standards in chemical production aren’t just about chasing numbers. They’re about protecting the integrity of research, reducing recall risks, and building confidence in every experiment. Labs aiming for regulatory approval or high-stakes synthesis often draw a hard line — anything less than 99% doesn’t make the cut. Transparency from the supplier, backup from analytical checks, and a few years of hard-won lab experience drive this mindset home.
Demand for higher purity keeps growing in pharmaceutical and biotech fields. Suppliers paying attention to feedback from the lab bench, continuously refining purification steps, and sharing granular data on every batch earn loyal customers. To push this industry forward, open channels between scientists and suppliers matter more than ever — and every chemist’s questions about clarity, contaminants, or documentation remain vital in shaping those standards.
| Names | |
| Pronunciation | /tuː-əˈmiːnoʊ-faɪv-klɔːr.oʊ-benˈzoʊ-fiːn.oʊn/ |
| Identifiers | |
| CAS Number | 2258-98-6 |
| Beilstein Reference | 1208730 |
| ChEBI | CHEBI:28225 |
| ChEMBL | CHEMBL16367 |
| ChemSpider | 134215 |
| DrugBank | DB07760 |
| ECHA InfoCard | 20d4a05d-a402-41d0-ae46-526847bd1f2b |
| EC Number | 219-062-9 |
| Gmelin Reference | 76094 |
| KEGG | C14330 |
| MeSH | D038601 |
| PubChem CID | 70144 |
| RTECS number | CB8925000 |
| UNII | 7U1EE2QY8H |
| UN number | UN2811 |
| CompTox Dashboard (EPA) | DTXSID3049387 |
| Properties | |
| Chemical formula | C13H10ClNO |
| Molar mass | 225.67 g/mol |
| Appearance | Light yellow to yellow crystalline powder |
| Odor | Odorless |
| Density | 1.29 g/cm3 |
| Solubility in water | Insoluble |
| log P | 1.9 |
| Vapor pressure | 0.0000145 mmHg (25°C) |
| Acidity (pKa) | 15.85 |
| Basicity (pKb) | 2.77 |
| Magnetic susceptibility (χ) | -59×10^-6 cm³/mol |
| Refractive index (nD) | 1.655 |
| Dipole moment | 2.85 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 239.7 J⋅mol⁻¹⋅K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -9.8 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -386.3 kJ mol⁻¹ |
| Hazards | |
| Main hazards | Irritating to eyes, respiratory system, and skin. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H335 |
| Precautionary statements | P261, P264, P271, P272, P280, P302+P352, P305+P351+P338, P321, P363, P405, P501 |
| Flash point | 146 °C (closed cup) |
| Lethal dose or concentration | LD50 (oral, rat) 640 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral rat 2000 mg/kg |
| NIOSH | DU8050000 |
| PEL (Permissible) | PEL not established |
| REL (Recommended) | 10 mg/m3 |
