The Mecobalamin, with the CAS registry number 13422-55-4,is also known as Methyl-5,6-dimethylbenzimidazolylcobalamin; Vitamin B12. It belongs to the product categories of Vitamins;Vitamin Ingredients. This chemical's molecular formula is C₆₃H₉₁CoN₁₃O₁₄P and molecular weight is 1344.38.Its EINECS number is 236-535-3. What's more,Its systematic name is Mecobalamin. It is a Dark Red Crystalline Powder which is one of the biologically active forms of vitamin B12. Differing only by the substitution of a methyl for the cyano group. Coenzyme required in the biosynthesis of methionine. Vitamin (hematopoietic).The Mecobalamin is irritating to eyes, respiratory system and skin. When you use it ,wear suitable protective clothing and avoid contact with skin and eyes.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Physical properties about  Mecobalamin are: (1)#H bond acceptors:  27; (2)#H bond donors:  16; (3)#Freely Rotating Bonds:  29.

You can still convert the following datas into molecular structure:
(1)SMILES:Cc1cc2c(cc1C)n(cn2)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)N6[Co+]C)CCC(=O)N)(C)CC(=O)N)C)CC(=O)N)C)O;
(2)Std. InChI:InChI=1S/C62H90N13O14P.CH3.Co/c1-29-20-39-40(21-30(29)2)75(28-70-39)57-52(84)53(41(27-76)87-57)89-90(85,86)88-31(3)26-69-49(83)18-19-59(8)37(22-46(66)80)56-62(11)61(10,25-48(68)82)36(14-17-45(65)79)51(74-62)33(5)55-60(9,24-47(67)81)34(12-15-43(63)77)38(71-55)23-42-58(6,7)35(13-16-44(64)78)50(72-42)32(4)54(59)73-56;;/h20-21,23,28,31,34-37,41,52-53,56-57,76,84H,12-19,22,24-27H2,1-11H3,(H15,63,64,65,66,67,68,69,71,72,73,74,77,78,79,80,81,82,83,85,86);1H3;/q;;+2/p-2/t31?,34-,35-,36-,37+,41-,52-,53-,56-,57+,59-,60+,61+,62+;;/m1../s1;
(3)Std. InChIKey:JEWJRMKHSMTXPP-WYVZQNDMSA-L.

Uses of Methylcobalamin:
Methylcobalamin is a cobalamin used in the treatment of peripheral neuropathy, diabetic neuropathy, and as a preliminary treatment for Amyotrophic lateral sclerosis. It is aslo used in treating diseases of vitamin B12 deficiency (such as pernicious anemia), or diseases of effective B12 deficiency, such as vitamin B12 metabolic pathway pathologies.

The toxicity data of  Mecobalamin are as follows: