| Product Name |
L-Cystine,
99% |
| Product Number |
C122009 |
| Product Brand |
Aldrich |
| CAS Number |
56-89-3 |
| Molecular Formula |
[-SCH2CH(NH2)CO2H]2 |
| Molecular Weight |
240.30 |
| |
| TEST |
SPECIFICATION |
| APPEARANCE |
WHITE TO OFF-WHITE POWDER, CRYSTALS, |
| |
CRYSTALLINE POWDER AND/OR CHUNKS |
| INFRARED SPECTRUM |
CONFORMS TO STRUCTURE. |
| ELEMENTAL ANALYSIS |
CARBON 29.5% - 30.4% |
| |
NITROGEN 11.3% - 11.9% |
| |
OR |
| TITRATION |
98.5%-101.5% (BACK TITRATION WITH NAOH) |
| OPTICAL ROTATION |
-215(+/- 10) DEGREES (C=1%, 1M(N) HCL) |
| THIN-LAYER |
CONSISTENT WITH 99% PURITY |
| SOLUBILITY |
50 MG/ML 1M HCL; CLEAR, COLORLESS TO FAINT |
| |
YELLOW SOLUTION |
| |
REVISED JUNE 12, 2007 RJM |
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