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| IUPAC name : | (2R)-2-amino-3-sulfanylpropanoic acid |
| InChI : | InChI=1/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1 |
| InChIKey : | XUJNEKJLAYXESH-REOHCLBHBU |
| SMILES : | C([C@@H](C(=O)O)N)S |
| cas number : | 52-90-4 |
| (EINECS) number : | 200-158-2 |
| beilstein number : | 1721408 |
| fema number : | 3263 |
| coe number : | 10464 |
| jecfa number : | 1419 |
| fl. number : | 17.033 |
| molar refractivity : | 28.90 ± 0.3 cm3 |
| parachor : | 251.5 ± 4.0 cm3 |
| index of refraction : | 1.549 ± 0.02 |
| surface tension : | 58.9 ± 3.0 dyne/cm |
| density : | 1.334 ± 0.06 g/cm3 |
| polarizability : | 11.45 ± 0.5 10-24cm3 |
| XlogP : | -2.60 |
| molecular weight : | 121.1581800 (IUPAC) |
| formula : | C3 H7 N O2 S |
| BioActivity Analysis : | 48415836 |
| NMR Predictor : | Predict |
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| export tariff code : | 2930.90 |
| fda reg : | 172.320 184.1271 |
Suppliers :
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| Ajinomoto : | L-CYSTEINE
DAB |
| Penta : | laevo-cysteine
free base |
| SAFC Global® : | L-Cysteine
≥97% |
organoleptics :
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| odor type : | sulfurous |
odor description: at 100.00 %. | sulfury |
properties :
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| appearence : | white crystals |
| assay : | 98.00 to 100.00 %
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| Food Chemicals Codex Listed : | No |
| melting point : | 238.00 to 240.00 °C. @ 760.00 mm Hg
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| flash point : | not determined
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| logP (o/w) : | -2.49 |
safety :
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| most important hazard(s) : | Xn - Harmful. |
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R 22 - Harmful if swallowed. S 02 - Keep out of the reach of children. S 20/21 - When using do not eat, drink or smoke. S 22 - Do not breath dust. S 24/25 - Avoid contact with skin and eyes. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 36 - Wear suitable protective clothing.
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| Oral Toxicity(LD50) : | |
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Oral-Rat 1890.00 mg/kg
intravenous-Rat 1140.00 mg/kg
Intraperitoneal-Rat 1620.00 mg/kg
Oral-Mouse 660.00 mg/kg
intravenous-Mouse 1250.00 mg/kg
Intraperitoneal-Mouse 1400.00 mg/kg
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| Dermal Toxicity(LD50) : | |
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Subcutaneous-Rat 1550.00 mg/kg
Subcutaneous-Mouse 1360.00 mg/kg
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| Inhalation Toxicity(LC50) : | |
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Not determined
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safety in use :
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| Category : | special dietary and nutritional additives |
| Maximised Survey-derived Daily Intakes (MSDI-EU) : | 547.00 (μg/capita/day) |
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| recommendation for laevo-cysteine fragrance usage levels up to : |
| | not for fragrance use.
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| recommendation for laevo-cysteine flavor usage levels up to : |
| | not for flavor use.
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safety references :
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| European Food Safety Athority(efsa) : | Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies... |
| EPI System : | view |
| ClinicalTrials.gov : | search |
| Daily Med : | search |
| NLM Hazardous Substances Data Bank : | search |
| Chemical Carcinogenesis Research Information System : | Search |
| Cancer Citations : | Search |
| Toxicology Citations : | Search |
| EPA GENetic TOXicology : | Search |
| Env. Mutagen Info. Center : | Search |
| NLM Developmental and Reproductive Toxicity : | Search |
| Canada Domestic Sub. List : | Yes |
| EPA Chem. Sub. Inventory : | Yes |
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| WGK Germany : | 3 |
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| | (2R)-2-amino-3-sulfanylpropanoic acid |
| (EINECS) number : | 200-158-2 |
| RTECS : | HA1600000 for cas# 52-90-4 |
| chemidplus : | 000052904 |
| EPA Substance Registry Services : | 52-90-4 |
references :
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| | (2R)-2-amino-3-sulfanylpropanoic acid |
| fl. number : | 17.033 |
| jecfa number : | 1419 |
| NIST Chemistry WebBook : | 52904 |
| pubchem : | 148667 |
Cosmetics :
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| Cosmetic uses : |
antioxidants
antistatic agents
hair conditioning
hair straightening agents
hair waving agents
masking agents
reducing agents
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other :
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| CosIng : | cosmetic data |
| VCF-Online: | VCF Volatile Compounds in Food |
| Dietary Supplements Labels Database : | Search |
| FDA Everything Added to Food in the United States (EAFUS) | View |