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                         C3633 Sigma Cystathionine ≥90% (HPLC) 100mg 
                                     
		| Product Name | Cystathionine, ≥90% (HPLC) | 
| Product Number | C3633 | 
| Product Brand | SIGMA | 
| CAS Number | 535-34-2 | 
| Molecular Formula | HOOCCH(NH2)CH2CH2SCH2CH(NH2)COOH | 
| Molecular Weight | 222.26 | 
| TEST | SPECIFICATION | LOT 59H3863 RESULTS | 
| APPEARANCE | WHITE TO OFF-WHITE POWDER | WHITE POWDER | 
| SOLUBILITY | CLEAR COLORLESS TO LIGHT YELLOW SOLUTION AT 50MG/ML IN 1M HYDROCHLORIC ACID | CLEAR VERY FAINT YELLOW | 
| IDENTITY | CONSISTENT WITH STRUCTURE BY IR OR NMR | CONFORMS BY IR | 
| PURITY BY THIN LAYER CHROMATOGRAPHY | MINIMUM 90% | >99% | 
| QUALITATIVE IDENTITY BY HPLC (MARFEYS) | MIXTURE OF 4 STEREOISOMERS: L-, D- L-ALLO AND D-ALLO-CYSTATHIONINE | L-:D-ALLO-:L-ALLO-:D- 25:25:25:25 | 
| PURITY BY HPLC (FMOC) | MINIMUM 90% | 90.2% | 
| RECOMMENDED RETEST SOP QC-12-006 | 2 YEARS | JUNE 2002 | 
| QC RELEASE DATE | JUNE 2001 | |
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