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L-Cystine, specified according to the requirements of Ph.Eur.

Product Code. 15289916 Shop All Thermo Scientific Chemicals Products
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Product Code. 15289916 Supplier Thermo Scientific Acros Supplier No. 406160250
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Description

CAS: 56-89-3 | C6H12N2O4S2 | 240.292 g/mol

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 56-89-3
Molecular Formula C6H12N2O4S2
Molecular Weight (g/mol) 240.292
InChI Key LEVWYRKDKASIDU-IMJSIDKUSA-N
Synonym l-cystine, cystine, l-dicysteine, l-cystin, cystine acid, cysteine disulfide, oxidized l-cysteine, beta,beta'-dithiodialanine, h-cys-oh 2, l-cysteine disulfide
PubChem CID 67678
ChEBI CHEBI:16283
IUPAC Name (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid
SMILES C(C(C(=O)O)N)SSCC(C(=O)O)N

Specifications

Melting Point 260.0°C to 261.0°C
Ammonium 200ppm max.
Heavy Metals (as Pb) 10ppm max.
Infrared Spectrum Authentic
Iron (Fe) 10ppm max.
Loss on Drying 0.5% max. (1 g, 105°C)
Linear Formula [-SCH2CH(NH2)CO2H]2
Specific Rotation −224.00
Sulfate 300ppm max.
Sulfated Ash 0.1% max. (1 g)
Solubility Information Solubility in water: 0.112g/l(25°C), 24mg/100mL(50°C). Other solubilities: 52 mg/100mL water (75°C),114 mg/100mL water(100°C), soluble in aq. solutions <ph 2, soluble in mineral acids, alkalis, ammonium hydrox, ide,, insoluble in ethanol, diethyl ether, b
Specific Rotation Condition −224.00 (20.00°C c=2;1 M HCL dry.sub.)
Quantity 25 g
Formula Weight 240.3
Chemical Name or Material L-Cystine
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