V6629 Sigma-Aldrich

Vitamin B12

BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥98%

Synonym: α-(5,6-Dimethylbenzimidazolyl)cyanocobamide, CN-Cbl, Cyanocob(III)alamin, Cyanocobalamin

  • CAS Number 68-19-9

  • Empirical Formula (Hill Notation) C63H88CoN14O14P

  • Molecular Weight 1355.37

  •  Beilstein/REAXYS Number 4122889

  •  EC Number 200-680-0

  •  eCl@ss 34058004

  •  PubChem Substance ID 24900763

  •  NACRES NA.75



Related Categories Amino Acids and Vitamins, Biochemicals and Reagents, Cell Biology, Cell Culture, Companion Products and Reagents,
Quality Level   200
biological source   microbial
product line   BioReagent
assay   ≥98%
form   powder
mol wt   Mw 1355.37 g/mol
application(s)   cell culture | insect: suitable
  cell culture | mammalian: suitable
  cell culture | plant: suitable
color   red to brown
pH   6
solubility   water: soluble 50 mg/mL, dark red
storage temp.   2-8°C
SMILES string   C/C(C1=N[C@]([C@]([C@H](CC(N)=O)[C@@]/2(C)CCC(NC[C@@H](OP([O-])(O[C@H]3[C@@H](O)[C@@H](N4C=[N]5C6=C4C=C(C)C(C)=C6)O[C@@H]3CO)=O)C)=O)([H])N([Co+]5C#N)C2=C(C)/C([C@@H](CCC(N)=O)C/7(C)C)=NC7=C/8)(C)[C@@](C)(CC(N)=O)[C@@H]1CCC(N)=O)=C9N=C8[C@@H](CCC(N)=O)[C@
InChI   1S/C62H90N13O14P.CN.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;1-2;/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);;/q;;+2/p-2/t31-,34-,35-,36-,37+,41-,52-,53-,56-,57?,59-,60+,61+,62+;;/m1../s1


General description

Cyanocobalamin (B12) is a water soluble vitamin, commonly called as cobalamins. Dairy products, meat and eggs are the major sources of this vitamin.


Vitamin B12 has been used:
• as a component of Erdschreiber′s medium
• as a supplement of Dulbecco′s modified Eagle′s medium used for the isolation of ventricular myocytes from neonatal and adult rats
• orally administered to male quails to study its role in reducing the negative effects of sodium selenite intoxication, in vivo


1, 5 g in glass bottle

100, 250 mg in glass bottle

Biochem/physiol Actions

Vitamin B12 is metabolized to its active form, methylcobalamin. Hindered vitamin B12 uptake is observed in pernicious anemia. Vitamin B12 is essential for erythroblast development. Pregnancy reduces the levels of vitamin B12. Aging reduces vitamin B12 absorption. It works as a coenzyme in fat, carbohydrate and protein metabolism. It is required for growth, genetic stability and survival of cells in vitro. Functions to support one-carbon metabolism. Present in many classical and serum-free formulations.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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