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Once you start tracing the roots of 2,2-diphenylglycine, you won’t just run into chemistry textbooks, but also the thread of scientific curiosity that links today’s labs to the bench-top experiments of the early twentieth century. The earliest references show up as offshoots in the race to build more complex molecular scaffolds, especially in the context of amino acids and their diverse family trees. As biochemistry found its groove, this compound stood out for its influence on peptide synthesis and structural modification, planting its flag among the classic derivatives used by chemists to shape and reshape molecules for various purposes. Rather than going for glamour, 2,2-diphenylglycine pressed ahead as a workhorse for researchers who needed specificity or a reliable way to tweak core structures.
Standing back and looking at this molecule, you see something simple, but with depth. The backbone brings together a glycine base, flanked by two benzene rings. The physical shape means the powder—often a crystalline solid—carries a distinct heft and resistance to easy dissolution in water, yet can blend into organic solvents without much fuss. While some might pass over a clear-to-white crystalline pile as “just another amino acid derivative,” the added bulk from both aromatic rings sets the stage for more than a few unique chemical behaviors. In everyday terms, this remains a material you can scoop, measure, and weigh with steady hands, though its reactions when heated or mixed with acids or bases draw the real interest in the lab.
You won’t find 2,2-diphenylglycine on every shelf in a general-use lab, but the gears keep turning wherever fine controls over stereochemistry or peptide development matter. Those who work with this compound check labels for purity, sometimes eyeing for more than 99% content as a bare minimum for sensitive experiments. The powder doesn’t kick up strong fragrances, nor does it demand constant refrigeration, but care matters, especially to keep out moisture. Storage in airtight containers prevents degradation and slipping standards. Even though it isn’t volatile, clear labeling about chemical nature and usage helps prevent mix-ups when juggling a crowded reagent shelf.
Anyone who’s wrestled with preparation methods knows that chemical routes aren’t about just tossing ingredients into a flask. Making 2,2-diphenylglycine often rides on the classic Strecker reaction, starting from benzophenone and winding through thoughtful addition of reactants such as cyanide and ammonia, then a hydrolysis step to nail down the amino acid skeleton. Safety protocols mean handling cyanide with utmost attention—no shortcuts, no room for distraction. Once in hand, researchers experiment with derivatives by tweaking reactive sites—often the amino or carboxyl groups—to build out building blocks for peptides, drugs, or more exotic molecular architectures.
If you’ve spent late nights fiddling with reactions, you come to respect how some compounds refuse to behave “by the book.” 2,2-diphenylglycine opens doors for N-protection strategies, especially in peptide synthesis. It sits ready to have its functional groups swapped out or protected, allowing sequential builds without stray side reactions. Under strong base, its carboxyl can form salts, giving chemists new handles for purification or later modification. The diphenyl arms influence both steric hindrance and electron distribution, so reactions that breeze along with glycine often stall, slow, or veer in new directions. Such characteristics help in designing selective, stepwise synthetic pathways.
In every chemical’s history, aliases crop up—sometimes from lazy shorthand, sometimes by IUPAC decree. You’ll hear “Benzilic acid amine,” “2,2-diphenylaminoacetic acid,” or even ring-friendly monikers in older literature. Anyone digging through patens or twenty-year-old journals learns to double-check which “diphenylglycine” they’re dealing with, as line blurs between similar-sounding compounds. This underscores why documentation and chemical registry numbers matter in real-world operations, not just as red tape, but to avoid the mess of misreading a synthetic route or repeating old mistakes.
No one steps into a lab without respect for risk. While 2,2-diphenylglycine may fall short of household hazard, it's not a substance for the careless or the poorly trained. Gloves, safety eyewear, careful handling—each plays its part. Dust inhalation, accidental ingestion, or skin contact are avoided as a matter of routine. Local regulation might not lay out detailed hazard communication for rarer chemicals, but seasoned researchers err on the strict side, following protocols for all organic powders. As environmental and worker-safety standards get more attention, the industry expects not only correct labeling and safe storage, but well-documented waste disposal. Factory-scale users must track exposures, limit unfiltered emissions, and train staff before they even unscrew the lid.
This is a behind-the-scenes actor across research. Start with peptide synthesis, where it functions as an intermediate—no big announcements, but a reliable cog in complex assembly lines. Some pharmaceutical research teams experiment with it when designing molecules to block or mimic biological signals, harnessing the two bulky phenyl groups to probe how locked-down structures interact with proteins. Academic labs explore its use in catalysis, sometimes pushing it into organocatalyst territory for enantioselective synthesis. Moguls of material science occasionally test it as a precursor in polymer design or as a modifier to fine-tune electronic properties, especially where rigid or aromatic frameworks hold the key.
Watching research journals unfold, you see that innovation often springs from old ground. 2,2-diphenylglycine sits at a crossroads between routine and potential breakthrough. New derivatives keep cropping up in bioactive screening, especially by groups looking to filigree around the aryl rings or to nudge the molecule into tighter biological windows. As peptide therapies attract funding, the molecule’s niche strengths in backbone modification and blocking sidesteps get another look. For synthetic chemists, refining greener, more efficient preparation methods keeps the compound relevant, especially as the industry looks to shrink environmental footprints and cut down energy use.
Few users ever take the step of ingesting or releasing 2,2-diphenylglycine into the wild. Yet any responsible commentary must note that data on long-term exposure, bioaccumulation, and breakdown in soil or water remain spotty at best. Smart practice leans toward full containment—tight lids, snappy cleanups, and dedicated waste bins. Where animal studies have been run, acute toxicity appears low compared to industrial solvents, though the lack of comprehensive human data leaves room for caution. If this compound gains traction for pharmaceutical or large-scale industrial applications, proactive safety assessments, environmental impact studies, and rigorous regulatory review will matter even more. The chemistry community has seen too many cases of “harmless” materials causing headaches after scale-up to leave anything to chance.
Even as scientific priorities shift with trends, 2,2-diphenylglycine stays in play for chemists seeking functional precision and application flexibility. If peptide drugs, organocatalysis, or custom material synthesis keep advancing, then demand for specialty amino acid derivatives will only grow. More energy will likely flow into not just tweaking the molecule, but rethinking how it's made—applying green chemistry, boosting yield, and cutting infrastructure costs. Long-term, a future exists where safer, sustainable production couples with a sharpened eye on application—whether that means smart therapeutics or step changes in material science. With every new journal article or industrial protocol, this molecule proves its worth outside the shadows, leaving its mark wherever fine chemistry gets done well.
2,2-Diphenylglycine doesn’t make headlines on its own, but folks in the lab know the name for a reason. This molecule, with its two bulky benzene rings and an amino acid backbone, draws attention because of its unique chemical behavior and the real impact it has on research and medicine. I remember coming across it during a summer stint in an organic synthesis lab—its crystalline flakes had a slight sparkle, but what really shined was what you could do with it.
At its core, 2,2-Diphenylglycine helps build bigger, more complex molecules. Medicinal chemists use it as a starting point in developing pharmaceutical compounds, with its structure helping to produce molecules that mimic or block natural signals in the body. Because it shares a scaffold with amino acids found in living things, it often sneaks into the design of drugs for conditions like epilepsy, anxiety, or even Alzheimer’s. One area where it steps up is as a precursor to making anticonvulsant agents, tying back to how our nerves carry information.
Its ability to act as a chiral auxiliary or a ligand in asymmetric synthesis plays a big role for chemists. This means it helps steer reactions to produce specific forms of a molecule, which translates into real-world impact: getting the right form of a medicine can make the difference between success in the clinic or unwanted side effects. It makes a small but critical contribution—remember thalidomide and the importance of chirality in drugs? 2,2-Diphenylglycine is another tool chemists lean on to avoid that kind of disaster.
Researchers turn to 2,2-Diphenylglycine to speed up or direct challenging reactions. By providing a stable, predictable frame, it nudges reagents down the right path, cutting down on waste and shaving hours off the timeline. There’s a real-world lesson here—just like a simple wrench can make a tough fix possible, this molecule lets bench scientists do what might seem impossible with simpler building blocks.
I remember one tough organic chemistry exam focused on why 2,2-Diphenylglycine reacts the way it does. Turns out, it stands as a classic teaching example for understanding how electron density, sterics, and basicity drive organic reactions. For undergraduate students, wrapping your head around these subtle effects always felt daunting, but working through mechanisms with a molecule like this sharpens thinking.
Production and use of chemicals always raise environmental questions. The synthesis of specialty amino acids, including variants like this one, often relies on multi-step reactions with hazardous reagents, or heavy solvents that lead to waste. Green chemistry circles discuss how sourcing raw materials and minimizing byproducts could reduce the footprint. Researchers suggest using more benign solvents or tapping into enzyme-driven processes to lower the chemical toll on the environment. Responsible sourcing and better lab practices are part of the solution, and it’s the kind of conversation every generation of chemists has to wrestle with.
The story of 2,2-Diphenylglycine weaves into bigger questions about medicine, innovation, and sustainability. For students, scientists, and even the rest of us curious about how new drugs or materials come to life, this small molecule offers a glimpse into the quiet, everyday work that shapes the future of healthcare and technology.
2,2-Diphenylglycine doesn’t fit into the same family as compounds like glycine, even with the word "glycine" in its name. Its skeleton shows this clearly: a central carbon with four arms—one reaching out to a carboxyl group (COOH), another to an amino group (NH2), and the remaining two connecting to benzene rings.
Chemists who draw it on paper often point out the central carbon as a spot of action. Two full phenyl groups pull on this carbon, making the molecule bulkier. It’s almost as if standard glycine decided to pick up two heavy weights, changing how it fits into chemical reactions. The formula lands as C14H13NO2, with the structural shorthand: Ph2CH(NH2)COOH. The “Ph” stands for the phenyl groups. Each one brings its own batch of electrons, twisting the rules glycine plays by in organic reactions.
Organic chemists don’t just choose molecules at random—they want to see how each part affects stability and reactivity. 2,2-Diphenylglycine’s bulky phenyl groups get in the way, shielding the central carbon and making certain chemical attacks tough. For anyone who has tried substituting hydrogens in reactions, the difficulty goes up fast with these bigger side groups. In fact, I’ve run hydrolysis reactions with similar compounds in the past, and the steric hindrance always forced adjustments to temperature and catalyst.
There’s more to the phenyl rings than just getting in the way. They influence the molecule’s reactivity through resonance and electron donation, often making the molecule more resilient under acidic or basic conditions. Pharmaceutical chemists sometimes tweak amino acids to look like this; the hope is to make drug candidates stick around longer in the body or avoid breakdown by enzymes designed for simpler structures.
Folks working on asymmetric synthesis or complex organocatalysis keep an eye on compounds like 2,2-diphenylglycine. The reason isn’t just complexity—it’s about seeing how structure impacts reaction outcome. In my own undergraduate days, working with molecules with twin phenyls taught a hands-on lesson in how steric bulk hampers and sometimes helps with selectivity.
This amino acid finds its way into testing racemization, setting up chiral centers, and building blocks for more advanced pharmaceuticals. Because the phenyls can be swapped or modified, researchers get another layer of control. Real labs have published work showing how these groups help tailor drug solubility and absorption, which matter to anyone hoping a new compound might one day clear clinical trials. 2,2-Diphenylglycine reminds chemists every day that even small tweaks can change a molecule’s behavior in ways theory only partly predicts.
You can’t separate chemicals like this from broader safety and sourcing questions. Extra phenyl groups often push the costs up—for bulk purchases, researchers run into price tags that can eat into tight budgets. Some synthesis pathways call for non-renewable starting materials, which becomes a talking point for industrial chemists looking to cut waste.
Safer, more sustainable synthesis is in reach. Recent graduate research projects have worked on flow chemistry systems that swap toxic reagents for less hazardous options, and companies keep looking for greener ways to build up these aromatic frameworks. If more professionals push for third-party safety testing and increased transparency about sourcing, cleaner production methods can become the norm.
For students just starting in organic chemistry labs, sketching out this structure offers a taste of how simple modifications can change everything. Seeing the two phenyls pop off the carbons is more than just drawing rings—it shows how chemists push boundaries on functionality and stability. 2,2-Diphenylglycine may not headline in mainstream science news, but it stands out for those working to expand what amino acids can do in the modern research landscape.
2,2-Diphenylglycine shows up in research labs, sometimes in chemical manufacturing. You might spot it in pharmaceutical development or as a building block in certain organic syntheses. On paper, this molecule doesn't look threatening. Two phenyl groups and a glycine backbone seem pretty harmless compared to plenty of gnarlier chemicals floating around the lab. But safety comes from more than just scanning a name or glancing at a structure.
Handling any powdered or crystalline organic compound calls for respect, even when toxicity data seems sparse. As of now, 2,2-Diphenylglycine doesn’t show up with dramatic hazard warnings in common chemical databases. This isn’t a pass for casual handling though. Lack of thousands of studies doesn’t mean free rein. Glycine on its own usually raises few alarms. Put two benzene rings on it, and things start to change. Aromatic amines have a tricky history, some causing sensitization or more serious health issues.
Take acetaminophen, a kitchen cabinet staple. Tweak some bonds, and you get a compound that can destroy livers if mishandled. Chemical intuition only goes so far. Without extensive toxicological data, the smart approach is contained handling, gloves, and a fume hood. Even if the skin absorption risk looks low, repeated or prolonged contact can add up over time. A powder as fine as 2,2-Diphenylglycine could easily aerosolize, so working in open air never seems wise.
From my own time working in chemistry labs, I learned early that new compounds mean new rules—always check the material safety data sheet (MSDS), even if it seems like overkill. Once, someone accidentally let a substance with a reputation for being “safe” spill onto their glove. Only late in the game did the allergic rash spiral up their arm. Surprises like this stick with you. For 2,2-Diphenylglycine, even if the glove splash seems minor, proper glove choice and vigilance around spills help sidestep misery later.
Companies making or selling fine chemicals like this one can’t afford to rely on assumptions. The right move means transparency—publish all available hazard data, train users, supply clear labels, and avoid misleading claims about safety. Sticking with suppliers who invest in third-party analysis and thorough documentation keeps everyone a step safer.
Google and regulators have paid close attention to chemical handling safety after a string of high-profile accidents. Lab directors and employers face real consequences if their teams cut corners, both ethically and legally. A clear culture of safety means regular training sessions, open communication, and zero shame about double-checking a handling technique. Complacency is where accidents wait.
For now, treat 2,2-Diphenylglycine with the same seriousness as any little-known powder. Gloves, eye protection, fume hood, and a quick wash if anything goes astray. Until deeper studies emerge, staying cautious never hurts. Labs don’t run on bravado; they run on muscle memory and respect for what’s not known. That approach serves science and safety in equal measure.
Working in chemistry labs over the years, I’ve seen supplies mishandled more than a few times. Small mistakes—like piling up bottles near heat sources or leaving containers open for just a little while—have a way of snowballing. 2,2-Diphenylglycine might not explode at the drop of a hat, but it deserves the same respect as other specialty compounds. Even if it doesn’t look threatening, there’s a whole lot happening at the molecular level. Keeping it stable keeps everyone safe.
Lab workers store 2,2-Diphenylglycine in cool, dry rooms because heat and moisture ruin its stability. From experience, room temperature often does the job, but you don’t want to push into the high 20s Celsius for very long. Humidity plays tricks on crystalline chemicals like this one, so a tightly sealed container matters more than you’d think. One bad summer storm and the powder clumps, sometimes going yellowish—not the desired result for research-grade material.
Away from sunlight is another rule I never break. UV rays trigger degradation, so keeping the bottles in opaque or amber glass containers proves crucial. I’ve lost small batches due to plastic containers that didn’t block the light fully. Chemical suppliers often pack things in dark bottles for this exact reason. At home, if you repack smaller quantities, a simple shoebox on a lower shelf keeps the light out.
Mistakes happen fastest when chemicals get mixed up. Every jar, vial, or beaker with 2,2-Diphenylglycine must carry a clear label. It’s tempting to scribble abbreviations, but nobody else will guess what “DPG” means a week later. At one university job, a mislabeled jar led to wasted hours because we had to retest everything, just to be sure. Permanent markers, typed labels, even a timestamp go a long way in catching problems before they escalate.
Segregating chemicals keeps reactivity problems in check. Acids and bases don’t belong together. Strong oxidizers steer clear of organics. 2,2-Diphenylglycine, being an amino acid derivative with aromatic rings, doesn’t mix safely with those groups. I keep its section in the same cabinet as similar amino derivatives, well away from the shelves full of acids and peroxides.
Chemical safety regulations aren’t a nuisance—they’re a response to hard-learned lessons. Powders like this often linger in the air. Without gloves and simple masks, skin irritation and sneezing fits crop up fast. I once developed mild dermatitis from skipping gloves just one too many times. A proper storage plan includes clear instructions about protective gear and safe handling, not just where to put the jars.
Temperature and humidity sensors revolutionize chemical cabinets. A cheap digital monitor on the door can flag issues before the product spoils. In larger facilities, automated alerts save big money. Inventory software now lets you set expiration dates and storage protocols, preventing accidental mixing or loss.
Every bottle of 2,2-Diphenylglycine deserves more than a forgotten corner on a crowded shelf. Smart storage protects research integrity and, more importantly, keeps people out of harm’s way. The extra steps always pay off in a lab that runs safe, smooth, and successful.
Ask any chemist, and most will rattle off the composition of 2,2-Diphenylglycine: C14H13NO2. Plug those atoms into a calculator, and you land on a molecular weight of about 227.26 grams per mole. It sounds technical, but nailing this number down matters in daily lab life and in big-picture decisions from drug design to making materials that work the way we want them.
Accurate numbers turn theory into reality. Dosing in pharmaceutical research depends on these values. Preparing a buffer for a protein experiment or figuring out how much compound to weigh out for a reaction—both jobs fall flat if the calculation’s off. My own lab work has taught me the value of sweating the details early. A mistake in the math sneaks all the way through your data if you aren’t careful, wasting both time and resources.
Understanding the molecular weight opens up a path for predicting how the molecule moves and interacts. For 2,2-Diphenylglycine, the bulkiness from its two phenyl rings changes solubility and permeability. Most drugs need to be soluble enough for dosing and small enough to cross barriers in the body. Knowledge gained from the number itself gives clues about how and where researchers might use this molecule, whether they’re chasing a new medicine or developing specialty polymers.
Cutting corners with basic facts, including molecular weight, can trigger a cascade of problems. Quality control teams rely on these values to keep impurities in check. Analytical chemists chase tiny errors that snowball into safety issues for patients. I've seen projects get delayed for weeks because a fundamental value was listed wrong, turning routine procurement into a guessing game.
A batch of material off by just a few milligrams per mole throws off large-scale production. The cost doesn’t just show up in wasted dollars—it runs deeper, shaking confidence in the data and the outcomes. New researchers learning the ropes might assume these numbers never lie, but the truth demands consistent vigilance.
Making sure values like these stay trustworthy calls for more than a good calculator. Digital tools and online databases move things faster, but mistakes keep cropping up because humans still type in the data. Extra eyes and robust verification systems pick up what software might miss.
Keeping chemical data current sounds simple but takes clear ownership. One solution is creating digital logs that track changes over time, along with accountability for updates. For research teams, regular training goes a long way. Sharing mistakes openly without blame helps catch problems before they hit production.
Measuring out 227.26 grams per mole means more than following a recipe. It carries weight—literally and figuratively—across research and industry settings. Confidence in this number signals a respect for evidence and care for safety, both of which underpin trust in chemistry’s results, whether we notice it or not.
| Names | |
| Preferred IUPAC name | 2,2-diphenyl-2-aminoacetic acid |
| Other names |
Benzhydrylglycine 2,2-Diphenylaminoacetic acid |
| Pronunciation | /ˌtuːtuː daɪˈfɛn.ɪlˈɡlaɪ.siːn/ |
| Identifiers | |
| CAS Number | 4070-97-9 |
| 3D model (JSmol) | `3d:CC(NC(=O)C1=CC=CC=C1)C2=CC=CC=C2` |
| Beilstein Reference | 1207585 |
| ChEBI | CHEBI:75210 |
| ChEMBL | CHEMBL131042 |
| ChemSpider | 54025 |
| DrugBank | DB08385 |
| ECHA InfoCard | 836f5982-0cf2-46bd-8088-c366e1b6c1c8 |
| EC Number | EC 4.1.1.82 |
| Gmelin Reference | 702047 |
| KEGG | C12021 |
| MeSH | D015414 |
| PubChem CID | 70636 |
| RTECS number | DG3150000 |
| UNII | 6M8A4Q46UZ |
| UN number | UN2811 |
| Properties | |
| Chemical formula | C14H13NO2 |
| Molar mass | 243.28 g/mol |
| Appearance | White to off-white crystalline powder |
| Odor | Odorless |
| Density | 1.174 g/cm³ |
| Solubility in water | slightly soluble |
| log P | 1.96 |
| Vapor pressure | Negligible |
| Acidity (pKa) | 4.08 |
| Basicity (pKb) | 2.39 |
| Magnetic susceptibility (χ) | -61.82·10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.616 |
| Viscosity | 500 cP (20°C) |
| Dipole moment | 4.52 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 380.6 J·mol⁻¹·K⁻¹ |
| Std enthalpy of combustion (ΔcH⦵298) | -7554.5 kJ/mol |
| Hazards | |
| Main hazards | Harmful if swallowed. Causes serious eye irritation. Causes skin irritation. May cause respiratory irritation. |
| GHS labelling | **"GHS07, GHS08"** |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H302: Harmful if swallowed. |
| Precautionary statements | Precautionary statements: P264, P270, P301+P312, P330, P501 |
| NFPA 704 (fire diamond) | 2,2-Diphenylglycine: NFPA 704 = 1-1-0 |
| Flash point | 140 °C |
| Autoignition temperature | Autoignition temperature: 540°C |
| Lethal dose or concentration | Lethal dose or concentration (LD50, Oral, Rat): 1600 mg/kg |
| NIOSH | SN8750000 |
| PEL (Permissible) | Not established |
| REL (Recommended) | 0.1 mg/m³ |
| Related compounds | |
| Related compounds |
2,2-Diphenyl-1-pyrrolidine Diphenhydramine Benzilic acid Phenylglycine Benzhydrol |
