Solubility (10mg/ml, 2N NH4):
Colorless, clear, complete
Specific Rotation (a)D24, 1% HCl):
+74 degrees to +76 degrees
Enantiomer Content
Identity (TLC):
methanol/chloroform/ammonia 17%: 2/2/1 (v/v/v)
isopropanol/ammonia conc. 1/1 (v/v)
n-butanol/acetic acid/H2O 4/2/3 (v/v/v)
detected by UV, ninhydrin, chlorine-tolidine
plate: silicagel 60 F254
Contaminant:
(same/more than)99% L-homo-Cystine
(same/less than)0.2% D-enantiomer
(same/less than)0.2%meso-homo-Cystine
Water Content (KF):
~0.1%
Elemental Analysis:
99.8% (Nth 10.44%, Nfd 10.42%)
Storage and Stability:
May be stored at 4 degrees C. Stable for 6 months. Moisture sensitive.
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