CERTIFICATE OF ANALYSIS
Product Name L-CYSTINE For Biochemistry CAS Number 56-89-3
Molecular Formula C6H12N2O4S2 Catalogue No. AL1616
Molecular Weight 240.3 Batch Number
Manufacturing Date December-2020 Expire Date November-2025

TYPE OF TEST

STANDARD

OBSERVED
Description
Assay(on dried basis)
Loss on drying at 105°C
Sulphated ash
Iron (Fe)
Lead ( Pb)
White powder or crystalline powder
99%w/w min
0.5 % max
0.1% max
0.002% max
0.001% max
White powder
99.09%w/w
0.06%
0.04%
< 0.002%
< 0.001%
Result: The above product complies with LR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane