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| IUPAC name : | (2R)-2-amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid |
| InChI : | InChI=1/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1/f/h9,11H |
| InChIKey : | LEVWYRKDKASIDU-IMJSIDKUBJ |
| SMILES : | C([C@@H](C(=O)O)N)SSC[C@@H](C(=O)O)N |
| cas number : | 56-89-3 |
| (EINECS) number : | 200-296-3 |
| beilstein number : | 1728094 |
| coe number : | 11747 |
| fl. number : | 17.006 |
| molar refractivity : | 55.95 ± 0.3 cm3 |
| parachor : | 468.6 ± 4.0 cm3 |
| index of refraction : | 1.652 ± 0.02 |
| surface tension : | 88.2 ± 3.0 dyne/cm |
| density : | 1.571 ± 0.06 g/cm3 |
| polarizability : | 22.18 ± 0.5 10-24cm3 |
| XlogP : | -5.50 |
| molecular weight : | 240.3004800 (IUPAC) |
| formula : | C6 H12 N2 O4 S2 |
| NMR Predictor : | Predict |
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| export tariff code : | 2930.90.5050 |
| fda reg : | 172.320 |
Suppliers :
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| Ajinomoto : | L-CYSTINE
C-GRADE |
| Ajinomoto : | L-CYSTINE
EP |
| Penta : | l-cystine
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organoleptics :
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properties :
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| appearence : | white crystalline powder |
| assay : | 98.00 to 100.00 %
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| Food Chemicals Codex Listed : | No |
| melting point : | 241.00 to 254.00 °C. @ 760.00 mm Hg
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| boiling point : | 467.00 to 469.00 °C. @ 760.00 mm Hg
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| flash point : | 458.00 °F. TCC ( 236.67 °C. )
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| logP (o/w) : | 1.23 |
safety :
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| most important hazard(s) : | Xi - Irritant |
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R 36/37/38 - Irritating to eyes, respiratory system, and skin. S 02 - Keep out of the reach of children. 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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Intraperitoneal-Mouse >961.00 mg/kg
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| Dermal Toxicity(LD50) : |
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Not determined
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| Inhalation Toxicity(LC50) : |
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Not determined
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safety in use :
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| Maximised Survey-derived Daily Intakes (MSDI-EU) : | 2.40 (μg/capita/day) |
| modified Theoretical Added Maximum Daily Intake (mTAMDI) : | 23000 (μg/person/day) |
| Threshold of concern : | 1800 (μg/person/day) |
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| recommendation for laevo-cystine fragrance usage levels up to : |
| | not for fragrance use.
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| Food categories according to Commission Regulation EC No. 1565/2000 (EC, 2000) in FGE.06 (EFFA, 2002a). According to the Industry the "normal" use is defined as the average of reported usages and "maximum use" is defined as the 95th percentile of reported usages (EFFA, 2002i). |
| Note : mg/kg = 0.001/1000 = 0.000001 = 1/1000000 = ppm. |
| | average usage mg/kg | maximum usage mg/kg |
| Dairy products, excluding products of category 02.0 (01.0) : | - | - |
| Fats and oils, and fat emulsions (type water-in-oil) (02.0) : | - | - |
| Edible ices, including sherbet and sorbet (03.0) : | - | - |
| Processed fruit (04.1) : | - | - |
| Processed vegetables (incl. mushrooms & fungi, roots & tubers, pulses and legumes), and nuts & seeds (04.2) : | - | - |
| Confectionery (05.0) : | - | - |
| Cereals and cereal products, incl. flours & starches from roots & tubers, pulses & legumes, excluding bakery (06.0) : | - | - |
| Bakery wares (07.0) : | - | - |
| Meat and meat products, including poultry and game (08.0) : | - | - |
| Fish and fish products, including molluscs, crustaceans and echinoderms (MCE) (09.0) : | - | - |
| Eggs and egg products (10.0) : | - | - |
| Sweeteners, including honey (11.0) : | - | - |
| Salts, spices, soups, sauces, salads, protein products, etc. (12.0) : | - | - |
| Foodstuffs intended for particular nutritional uses (13.0) : | - | - |
| Non-alcoholic ("soft") beverages, excl. dairy products (14.1) : | 70.00000 | - |
| Alcoholic beverages, incl. alcohol-free and low-alcoholic counterparts (14.2) : | - | - |
| Ready-to-eat savouries (15.0) : | - | - |
| Composite foods (e.g. casseroles, meat pies, mincemeat) - foods that could not be placed in categories 01.0 - 15.0 (16.0) : | - | - |
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 |
| Chemical Carcinogenesis Research Information System : | Search |
| AIDS Citations : | Search |
| Cancer Citations : | Search |
| Toxicology Citations : | 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-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid |
| (EINECS) number : | 200-296-3 |
| RTECS : | HA2690000 for cas# 56-89-3 |
| chemidplus : | 000056893 |
| EPA Substance Registry Services : | 56-89-3 |
references :
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| | (2R)-2-amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid |
| fl. number : | 17.006 |
| NIST Chemistry WebBook : | 3016915391 |
| pubchem : | 209796 |
Cosmetics :
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| Cosmetic uses : |
antistatic agents
hair conditioning
masking 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 |