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%
It is dark red crystals or crystalline powder. It functions after converted into methylcobalamin and adenosylcobalamin in the body. Its stability is the best among the four types, as well as its absorption rate in the body is the highest. Although it cannot be directly utilized by the human body, it has the same effect and function with adenosylcobalamin.
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
