| Product Name |
L-Cystine,
meets EP testing specifications, cell culture tested, ≥98.5%, from non-animal source |
| Product Number |
C7602 |
| Product Brand |
Sigma |
| CAS Number |
56-89-3 |
| Molecular Formula |
[-SCH2CH(NH2)CO2H]2 |
| Molecular Weight |
240.30 |
| |
| TEST |
SPECIFICATION |
| ORIGIN |
MUST BE NON-ANIMAL SOURCE |
| APPEARANCE |
WHITE CRYSTALLINE POWDER |
| IDENTIFICATION BY IR |
COMPARES TO REFERENCE STANDARD |
| SOLUBILITY |
CLEAR COLORLESS SOLUTION AT 1G TO 10ML OF 2M HYDROCHLORIC ACID |
| SPECIFIC ROTATION * |
-218 TO -224 DEG (20DEGC) |
|
* C = 2 IN 1M HYDROCHLORIC ACID |
| CHLORIDE |
NMT 0.020% |
| AMMONIUM |
NMT 0.02% |
| SULFATE |
NMT 0.020% |
| IRON |
NMT 10 PPM |
| HEAVY METALS |
NMT 10 PPM |
| ARSENIC |
NMT 1 PPM |
| LOSS ON DRYING |
NMT 0.20% |
| RESIDUE ON IGNITION |
NMT 0.10% |
| NINHYDRIN-POSITIVE SUBSTANCES (OTHER AMINO ACIDS) |
CONFORMS |
| PH TEST |
5.0 TO 6.5 (0.02G IN 50ML WATER) |
| ASSAY (DRY BASIS) |
98.5 TO 101.0% |
| ENDOTOXIN ASSAY |
<1 EU/MG |
| CELL CULTURE TEST |
PASS |
| NOTE |
MEETS EP TESTING SPECIFICATIONS |
| RECOMMENDED RETEST |
4 YEARS |
| DOCUMENT # |
C7602/08/08/08/5 |
Certificate of Analysis
Certificate of Origin
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