| Product Name |
L-Cysteine,
97% |
| Product Number |
168149 |
| Product Brand |
Aldrich |
| CAS Number |
52-90-4 |
| Molecular Formula |
HSCH2CH(NH2)CO2H |
| Molecular Weight |
121.16 |
| |
| TEST |
SPECIFICATION |
| APPEARANCE |
WHITE CRYSTALS OR CRYSTALLINE POWDER |
| INFRARED SPECTRUM |
CONFORMS TO STRUCTURE. |
| TITRATION |
96.5% - 103.5% (WITH SODIUM THIOSULFATE) |
| OPTICAL ROTATION |
+6.5(+/- 1.5) DEGREES (C=2%, 5N HCL) |
| |
OR |
| OPTICAL ROTATION |
+8.3 - +9.5 DEGREES (C=8%, 1M HCL) |
| ENANTIOMERIC EXCESS |
95.5% (MINIMUM) |
| THIN-LAYER |
CONSISTENT WITH 97% PURITY |
| SOLUBILITY |
5% IN 1N HCL; CLEAR, COLORLESS SOLUTION |
| |
REVISED DECEMBER 19, 2002 JSB |
| |
REVISED FEBRUARY 22, 2005 RJM |
Certificate of Analysis
Certificate of Origin
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