L(-)-Cystine USP


Synonyms: (H-Cys-OH)2(R)-(-)-Cystine
J993-100G
97063-470
L(-)-Cystine USP
L(-)-Cystine
White crystals or crystalline powder.


Formula: HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
MW: 240.3 g/mol
Boiling Pt: 428 °C (1013 hPa)
Melting Pt: 261…262 °C
Density: 1.677 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00064228
CAS Number: 56-89-3
EINECS: 200-296-3
Merck Index: 13,02811
Specification Test Results
Loss on Drying 0.2%
Residue on Ignition 0.1 %
Specific Rotation (-225°) - (-215°)

 

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