L-Carnosine
CAS No.: 305-84-0
Spec: 99.5% min
Package: 25kg/fiber drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
Package: 25kg/fiber drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
Description
L-Carnosine spec:
| Items | Specification | Results |
| Appearance | White to light yellow powder | White powder |
| Identificaiton | The retention time of principle Peak reference standard |
Complies |
| PH | 7.5-8.5 | 8.2 |
| Melting point ℃ | 250-265 | 250-251.5 |
| Specific optical rotation | [a]D20=+20.0~+22.0° | +21.5° |
| Loss on drying % | Not more than 1.0 | 0.20% |
| Residue on ignition % | Not more than 0.10 | 0.05 |
| Heavy metals ppm | Not more than 10ppm | Complies |
| Related substances | L-histidine ≤1.0% | 0.02% |
| Β-alanine ≤0.1% | ＜0.1% | |
| Assay (on the anhydrous Basis ) |
99.0-101.0% | 100.2% |
| Microbial limit | Total aerobe ≤1000 cfu/g | ＜10 cfu/g |
| Total yeast and mold count ≤100cfu/g | ＜10 cfu/g | |
| Escherichia coli | ND | |
| Salmonella | ND |
