Methylcobalamin

Methylcobalamin physically resembles the other forms of vitamin B12, occurring as dark red crystals that freely form cherry-colored transparent solutions in water.

Methylcobalamin (mecobalamin, MeCbl, or MeB₁₂) is a cobalamin, a form of vitamin B₁₂. It differs from cyanocobalamin in that the cyanide is replaced with a methyl group. Methylcobalamin features an octahedral cobalt(III) centre and can be obtained as bright red crystals. From the perspective of coordination chemistry, methylcobalamin is notable as a rare example of a compound that contains metal-alkyl bonds. Nickel-methyl intermediates have been proposed for the final step of methanogenesis.

单词	Methylcobalamin
释义	Methylcobalamin 英语百科 Methylcobalamin Methylcobalamin (mecobalamin, MeCbl, or MeB₁₂) is a cobalamin, a form of vitamin B₁₂. It differs from cyanocobalamin in that the cyanide is replaced with a methyl group. Methylcobalamin features an octahedral cobalt(III) centre and can be obtained as bright red crystals. From the perspective of coordination chemistry, methylcobalamin is notable as a rare example of a compound that contains metal-alkyl bonds. Nickel-methyl intermediates have been proposed for the final step of methanogenesis.
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