維他命B12

維他命B12
系統（IUPAC）名稱
α-(5,6-Dimethylbenzimidazolyl)cobamidcyanide
識別號
CAS number	68-19-9
ATC code	B03BA01
PubChem	184933
DrugBank	DB00115
化學資料
公式	C63H88CoN14O14P
分子質量	?
SMILES	search in eMolecules, PubChem
Synonyms	Vitamin B12, vitamin B-12, cobalamin
Pharmacokinetic data
Bioavailability	Readily absorbed in distal half of the ileum.
Protein binding	Very high to specific transcobalamins plasma proteins. Binding of hydroxocobalamin is slightly higher than cyanocobalamin.
Metabolism	liver
Half life	Approximately 6 days (400 days in the liver).
Excretion	kidney
醫療嘅考慮
Pregnancy cat.	?
Legal status	POM(UK) OTC(US)
Routes	By mouth, sublingual, intravenous (IV), intramuscular (IM), intranasal

維他命B₁₂（粵拼：wai4 taa1 ming6 B sap6 ji6，Vitamin B12）係種維他命，分子式C₆₃H₈₈O₁₄N₁₄PCo。