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Certificate of Analysis
Product Name: L-Carnosine Catalogue Number: GR-439224
Batch Size: 200KG Lot Number: 20230309
CAS Number: 305-84-0 Production Date:
Molecular Formula: C9H14N4O3 Report Date: 2023-03-09
Molecular Weight: 226.23 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White to off-white powder Conforms
Assay 99.0%~101.0% 100.0%
Specific rotation +20°~+22° +21.1°
Loss on drying ≤1.0% 0.14%
pH 7.5~8.5 8.3
Heavy metals ≤10 ppm Conforms
Pb ≤3 ppm Conforms
As ≤1 ppm Conforms
Cd ≤1 ppm Conforms
Hg ≤0.1 ppm Conforms
Ignition residue ≤0.1% 0.05%
Melting point 250°C~260°C Conforms
Hydrazine ≤2 ppm Conforms
Bulk density 0.23 g/ml
Tapped density 0.50 g/ml
L-Histidine ≤0.3% 0.03%
Total aerobes counts ≤1000 cfu/g 20 cfu/g
Mold & Yeast ≤100 cfu/g 5 cfu/g
E.Coli ND ND
Salmonella ND ND
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