Form
Powder
Appearance
Pink or Red Powder
Melting Point
>392 °C
Assay
96.0-100.5
Loss on Drying
≤12.0%
Vitamin B12 has the largest and most complicated structure of the B vitamins. Vitamin B12 is soluble in aqueous solution at 12.5 mg/mL.
68-19-9
C63H88CoN14O14P
1355.37
Vitamin B12 is required for DNA synthesis as it serves as a precursor for the amino acid methionine. This is consistent with a finding that bacterial cells with a vitamin B12 deficiency have significantly less cellular DNA content. In addition, vitamin B12 is converted into s-adenosylmethionine, a broad spectrum methyl group donor for >100 different substrates including DNA, RNA, and a number of proteins.
2-8 °C
2936.26.0000
Powder
Pink or Red Powder
>392 °C
96.0-100.5
≤12.0%