L-Cystine, 99%, ACROS Organics™

Product Code	Brand	Quantity	Packaging
10273990	Acros Organics 111801000	100g	Plastic bottle
10619094	Acros Organics 111805000	500g	Plastic bottle
15189163	Acros Organics 111800025	2.5kg	Plastic bottle

Chemical Identifiers

• CAS: 56-89-3
• Molecular Weight (g/mol): 240.292
• InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N
• PubChem CID: 67678
• IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid

• Molecular Formula: C6H12N2O4S2
• MDL Number: MFCD00064228
• 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
• ChEBI: CHEBI:16283
• SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N

Specifications

• Additional Information: Vapor Pressure: Negligible
• Ammonium: 200ppm max.
• Chloride: 200ppm max.
• Assay Percent Range: 99%
• Molecular Formula: C6H12N2O4S2
• Infrared Spectrum: Authentic
• Iron (Fe): 10ppm max.
• Loss on Drying: 0.5 % max. (105°C, 3 hrs)
• 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
• InChI Key: LEVWYRKDKASIDU-IMJSIDKUSA-N
• IUPAC Name: (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid
• PubChem CID: 67678
• Formula Weight: 240.3
• Physical Form: Fused Solid, Crystals or Chunks
• Percent Purity: ≥98.5% (Acid)
• Color: White to Beige

• Chemical Name or Material: L-Cystine
• CAS: 56-89-3
• Chlorine (Cl): 200ppm max.
• Heavy Metals (as Pb): 10ppm max.
• Linear Formula: [-SCH₂CH(NH₂)CO₂H]₂
• MDL Number: MFCD00064228
• Beilstein: 04, 507
• Merck Index: 15, 2779
• Packaging: Plastic bottle
• SMILES: C(C(C(=O)O)N)SSCC(C(=O)O)N
• Molecular Weight (g/mol): 240.292
• ChEBI: CHEBI:16283
• Specific Rotation: −209° to −224° (20°C, 589nm) (c=2, 1 M HCl) on dried substance
• Sulfate: 300ppm max.
• Sulfated Ash: 0.1 % max.
• Quantity: 100g