Cystine
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Cystine
structure -
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CAS No:
923-32-0
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Formula:
C6H12N2O4S2
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Chemical Name:
Cystine
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Synonyms:
Cystine;Cystine,DL-;DL-Cystine;NSC 203781;2-Amino-3-[(2-amino-2-carboxyethyl)disulfanyl]propanoic acid
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CAS No:
Description
white to off-white powder
DryPowder
Cystine is a sulfur-containing amino acid obtained by the oxidation of two cysteine molecules which are then linked via a disulfide bond. It has a role as a human metabolite and a mouse metabolite. It is an organic disulfide, a sulfur-containing amino acid and a cysteine derivative. It is a tautomer of a cystine zwitterion.|A covalently linked dimeric nonessential amino acid formed by the oxidation of CYSTEINE. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.
Characteristics
177
1.23
White Powder
1.6±0.1 g/cm3
240 °C (decomp)
468.2±45.0 °C at 760 mmHg
237.0±28.7 °C
1.653
soluble in dilute acid and alkali solution, highly soluble in water, not soluble in alcohol.1 M HCl: soluble
Safety Information
NONH for all modes of transport
3
36/37/38-22
37/39-26-24/25-36
Xn,Xi
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
H315
|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P301+P312, P330, and P501|Aggregated GHS information provided by 5 companies from 2 notifications to the ECHA C&L Inventory.|Not Classified
Cystine Use and Manufacturing
Using L-cystine as a raw material, refluxing in 6mol/L hydrochloric acid for several hours, active carbon treatment, concentration, ammonia water neutralization to obtain crude cystine, and then recrystallization to obtain a pure product.
Used as a biochemical reagent
Fillers
Food Products
Food, beverage, and tobacco product manufacturing|L-Cystine: ACTIVE
Food additives -> Flavoring Agents|Human Drugs -> EU pediatric investigation plans|Cosmetics -> Antistatic; Hair conditioning
Flavoring Agents
Computed Properties
Molecular Weight:240.3
XLogP3:-6.3
Hydrogen Bond Donor Count:4
Hydrogen Bond Acceptor Count:8
Rotatable Bond Count:7
Exact Mass:240.02384922
Monoisotopic Mass:240.02384922
Topological Polar Surface Area:177
Heavy Atom Count:14
Complexity:192
Undefined Atom Stereocenter Count:2
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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