D-Cysteine Hydrochloride Monohydrate
|
Product Name |
D-Cysteine Hydrochloride Monohydrate |
|
Other Name |
H-D-Cys-OH.HCl |
|
Molecular Formula |
C3H7NO2S.HCl.H2O |
|
Molecular Weight |
175.63 |
|
CAS |
32443-99-5 |
|
EINECS |
251-043-9 |
Product description
|
White crystal or white crystalline powder, easily soluble in water, slightly soluble in ethanol, acetone and other organic solvents, with weak odor of organic sulfide. It is mainly used in the field of medicine and is an important intermediate of a new generation of chiral antibiotic Cefminox Sodium. |
Product Specification
|
Appearance |
Colorless crystal |
|
Specific rotation [a] 20d |
-6.1°~ -7.8° |
|
Transmittance |
Colorless, clear and transparent NMT 98% |
|
Chlorine |
19.89 ~20.29% |
|
Ammonium |
0.02% |
|
Sulfate |
NMT 0.02% |
|
Iron |
NMT 10ppm |
|
Heavy Metal |
NMT 10ppm |
|
Arsenic |
NMT 1ppm |
|
Other amino acids |
No other amino acid spots |
|
Loss on drying |
8.5% ~ 12.0% |
|
Residue on ignition |
NMT 0.10% |
|
Assay |
98.5% ~ 101.0% |
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