VB12

Other names: vitamin B 12; Cyanocobalamine; Vitamin B12; Cyanocobalamine; Cobalamin

CAS No.: 68-19-9

C63H88CoN14O14P=1355.38

Grade: br

Content: ≥ 98.0%

Identification: qualified

Loss on drying: ≤ 12.0%

Related substances: ≤ 3.0%

Physicochemical Properties: dark red crystalline powder. It is odorless, tasteless and sensitive to light. It is hygroscopic and can absorb 12% water in the air. Its aqueous crystals are stable in air. The color darkens at 210 ~ 220 ℃, and does not melt at 300 ℃. Its aqueous solution is neutral and most stable at pH 4.5 ~ 5. 1g is soluble in about 80ml of water, soluble in ethanol, insoluble in acetone, chloroform and ether. Specific rotation -59 ° ± 9 ° (in dilute aqueous solution). The maximum absorption wavelength (in water) is 278, 361, 550nm (a1%1cm 115, 204, 64). Minimum lethal dose (rat, abdominal cavity) 1364mg/kg

Purpose: biochemical research. tissue culture

Storage: 2 ~ 8 ℃, away from light