Methylcobalamin

[CH3-].CC1=CC2=C (C=C1C) N (C=N2) C3C (C (C (O3) CO) OP (=O) ([O-]) OC (C) CNC (=O) CCC4 (C (C5C6 (C (C (C (=C (C7=NC (=CC8=NC (=C (C4=N5) C) C (C8 (C) C) CCC (=O) N) C (C7 (C) CC (=O) N) CCC (=O) N) C) [N-]6) CCC (=O) N) (C) CC (=O) N) C) CC (=O) N) C) O.[Co+3]

Methylcobalamin (Mecobalamin, Vancomin, Methycobal, Cobametin) is one active form of vitamin B12 which can directly participate in homocysteine metabolism. It is used to treat some nutritional diseases and other diseases in clinic, such as Alzheimer's disease and rheumatoid arthritis.