Certificate of Analysis
Product Name
L-CYSTEINE 99% For Biochemistry
CAS Number
52-90-4
Molecular Formula
C3H7NO2S
Catalogue No.
AL0585B
Molecular Weight
121.16 g/mol
Batch Number
AL-2026-AL0585B
Manufacturing Date
September-2026
Expire Date
September-2031
| Type of Test | Standard | Observed |
|---|---|---|
| Description | Colorless crystalline powder | Colorless crystalline powder |
| Assay | (Min.) 99% | 99.35% |
| Heavy metals (as Pb) | <0.001% | <0.001% |
| Ammonium (NH4) | <0.01% | <0.01% |
| Foreign amino acids Other ninhydrine-positive | <0.3% | 0.2% |
| substance | <0.1% | <0.1% |
Tested By
Hitesh Kunjathur
Analysed By
Preeti Rane
