Items Standard
Appearance Dark red crystal or crystalline powder, with no smell and no taste; hygroscopicity.
Identification A A361nm/A278nm:1.70-1.90
A361nm/A550nm:3.15-3.40
Identification B The retention time of major peak of the sample should be consistent with the standard solution.
Identification C Positive
Infrared Spectrum Infrared spectrum of the sample should be consistent with the reforence map.
Loss on drying 10.0%
Assay 97.0%~102.0%
78-lactocyanocobalamin1.0%
50-carboxyeyanocobalamin 0.5%
34-methylcyanocobalamin 2.0%
32-carboxyeyanocobalamin 1.0%
8-Epi-cyanocobalamin 1.0%
Any other unidentified 0.5%
Total impurities 3.0%
Total aerobic bacteria count 1000cfu/g
Molds Yeasts 100cfu/g
E coli Negative
Residual solvents Acetone 0.5%
Supplier: Ascorbic acid, VB12 cyanocobalamin mecobalamin, amoxicillin trihydrate, cefotaxime sodium, cefazolin sodium, analgin, aspirin, paracetamol, 6APA, 7ACA
Supplier: Cas no: 13605-48-6, cas no: 16648-44-5, lead diacetate trihydrate, 4-aminoacetophenone, cyanocobalamin, cas no: 37148-47-3, cas no: 37148-48-4
Services: Transportation
