H-Homocystine-(OH)2; L-4-4’-Dithiobis(2-aminobutanoic acid)
Solubility (10mg/ml, 2N NH4)
Colorless, clear, complete
Specific Rotation (α)D24, 1% HCl)
+74° to +76°
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
≥99% L-homo-Cystine ≤0.2% D-enantiomer ≤0.2%meso-homo-Cystine
Elemental Analysis
99.8% (Nth 10.44%, Nfd 10.42%)
Storage and Stability
May be stored at 4°C. Stable for 6 months. Moisture sensitive.
Form
Supplied as a white powder.
Important Note
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.