Vitamin b12 Methylcobalamin 13422-55-4
Produktbeschreibung
CAS-Nr. 13422-55-4
Molekularformel C63H91CoN13O14P
Molekulargewicht 1344.38
Produktbeschreibung
Vitamin b12 Methylcobalamin
CAS-Nr. 13422-55-4
Molekularformel C63H91CoN13O14P
Molekulargewicht 1344.38
Items |
Specification |
|
Appearance |
Dark red crystalline powder or dark red crystals |
|
Identification A (UV) |
Absorption maxima at 278nm,361nm and from 547nm to 559nm |
|
Ratio absorbances |
A361/A278nm 1.70-1.90 A361/A550nm 3.15-3.40 |
|
Identification B (TLC) |
Conforms to standard |
|
Identification C(Chemistry) |
Positive |
|
Identification D(Chemistry) |
Positive |
|
Pseudo cyanocobalamin |
Complies |
|
Related substances (HPLC) |
≤3.0% |
|
Loss on drying |
≤12.0% |
|
Assay(on anhydrous basis) UV |
96%~100.5% |
|
Residual Solvent (GC) | ||
Acetone |
≤0.5% |
|
Ethanol |
≤0.5% |
|
Total Plate count |
≤1000cfu/g |
Produktgruppe : Vitamine > Andere Vitamine