Four or more for £11 each. Add to basket for discount.
- OP Labs formerly Oxford Peptides.
- 1mg/ml | 10mg/vial
- Can be stored long term at ambient temperature but best kept cool.
- Important to store in a dark place.
- Sold for research purposes only.
- Contact us for Wholesale Orders.
Download Product Spec here: Vitamin B12 Product Spec.pdf
Please note our in-solution products are made to specification so we do not produce a batch level COA.
Vitamin B12 (Cobalamin)
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IUPAC Name: Coα-[α-(5,6-dimethylbenzimidazolyl)]-Coβ-cyano-cobamide
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Common Names: Cobalamin, Cyanocobalamin (most common injectable form)
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Chemical Formula: C<sub>63</sub>H<sub>88</sub>CoN<sub>14</sub>O<sub>14</sub>P
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Molecular Weight: 1355.37 g/mol
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CAS Number: 68‑19‑9
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PubChem CID: 5311498
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UNII: 126957‑03‑1
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InChI:
InChI=1S/C63H88CoN14O14P/c1-28-40-32(2)50(77)58(87)62(40)92-64-39-31-45(67-29-38(39)64)61(86)74-43-25-66(18-19-65-43)24-23-52-55(80)48(72-37-16-13-33(69)14-17-37)57(82)49(73-52)53(78)36-15-12-34(70)20-21-42(36)71-22-26-54(79)47(63(88)89)75-44-27-68-56(81)51(76-44)30-41-35(3)46(59(83)84)60(85)42/h12,15-17,20-21,27,29,41,43,47-49,51-55,58-60,66,69-71,74-75,77-82,84-87H,13-14,18-19,22-26,28,30-31H2,1-3H3,(H,72,73,78)(H,76,75,79)(H,77,80,83)(H,78,82,85)(H,79,81,86)(H,80,82,84)(H,83,85,87)(H,84,86,88)/b44-22-,46-26-/t41-,43-,47-,48-,49-,51-,52-,53+,54-,55-,58-,59-,60-,66-/m0/s1 -
InChI Key: GMTZNXXZAKOFGC-MBXHPAOUSA-N
Structural Characteristics
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Core Structure: Corrin ring with a central cobalt ion
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Functional Groups: Cyanide ligand bound to cobalt (for cyanocobalamin), amide side chains, nucleotide loop with 5,6‑dimethylbenzimidazole
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Stereochemistry: Multiple chiral centers; configuration critical for cobalamin identity
Molecular Structure
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SMILES:
CC1=C(C(=O)C(=C(C1=O)C)C2C3C4=C(C5=C(C=C(C=C5C(=C4C(=O)C6=C(C(=C(C(=O)C6=O)C)C3C(=O)C=C2C(=O)C7=C(C(=C(C(=O)C7=O)C)C8=C(C(=C(C(=O)C8=O)C)C9C(=O)C=C(C9=O)C)C%10C(=O)C=C(C%10=O)C)C)C)C)C)C)C)C)C)C
Physical and Chemical Properties
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Appearance: Red liquid
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Stability: Light‑sensitive; stable when lyophilized and stored under inert atmosphere
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Storage: Typically stored below 25 °C; protected from light and moisture
References
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PubChem Compound Summary for CID 5311498 – Vitamin B12.
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CRC Handbook of Chemistry and Physics, 103rd Edition.
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ChemSpider: Vitamin B12 Record.
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Merck Index, 15th Edition, Monograph on Cobalamin.
Keywords: Vitamin B12, B12.
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