Product Name

Vitamin B12(Cyanocobalamin)

CAS No.

3081-61-6

Quality Standard

USP39

Packing

100g/tin or 1kg/tin

Shelf Life

5Years,Keep in cool and dry place,Protecte from light

Item

Standard

Appearance

Dark red crystalline powder or dark red crystals

Identification

A361nm/A278nm:1.70-1.90

A361nm/A550nm:3.15-3.40

Cobalt:Meets USP requirements

HPLC:The retention time of the major peak of the sample solution corresponds to that of the standard solution

Loss on drying

≤10.0%

Assay

97.0% ~ 102.0%

Related Substances

Total Impurities: ≤3.0%

7β,8β-Lactocyanocobalamin: ≤1.0%

34-Methylcyanocobalamin: ≤2.0%

8-Epi-cyanocobalamin: ≤1.0%

Any other impurity: ≤0.5%

Residual solvent

Acetone ≤5000ppm

Total plate count

≤1000cfu/g

Yeast & Molds

≤100cfu/g

E.Coli

Negative