laevo-cystine
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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
 
 
export tariff code :2930.90.5050
fda reg :172.320

Suppliers :
Ajinomoto :L-CYSTINE
C-GRADE
Ajinomoto :L-CYSTINE
EP
Penta :l-cystine

organoleptics :

properties :
appearence :white crystalline powder
assay : 98.00 to 100.00 %   
Food Chemicals Codex Listed :No
melting point : 241.00 to 254.00 °C. @ 760.00 mm Hg
boiling point : 467.00 to 469.00 °C. @ 760.00 mm Hg
flash point : 458.00  °F.  TCC  ( 236.67 °C. )
logP (o/w) : 1.23

safety :
most important hazard(s) :Xi - Irritant
  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.
Oral Toxicity(LD50) :
  Intraperitoneal-Mouse    >961.00  mg/kg

Dermal Toxicity(LD50) :
  Not determined
Inhalation Toxicity(LC50) :
  Not determined
 

safety in use :
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)
 
recommendation for laevo-cystine fragrance usage levels up to :
 not for fragrance use.
 
 
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/kgmaximum 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 :
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
 
WGK Germany :3
 
 
 
 
(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 :
 
(2R)-2-amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid
fl. number :17.006
NIST Chemistry WebBook :3016915391
pubchem :209796

Cosmetics :
Cosmetic uses : antistatic agents
hair conditioning
masking agents

other :
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
synonyms :
(2R)-2-amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid
 cysteine disulfide
 dicysteine
 gelucystine

soluble in :
 alcohol
 water, 190 mg/L @ 20C

potential uses :
 antistatic agents
 hair conditioning

natural occurrence in :
 found in nature  



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