| Size | Price | Stock | Qty |
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| 250mg |
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| 500mg |
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| 1g |
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| 2g |
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| 5g |
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| 10g |
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| Other Sizes |
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| ln Vitro |
Out of all the B vitamins, vitamin B12 is one. In most cases, it affects DNA synthesis and regulation, but it also plays a role in energy production, fatty acid synthesis (particularly odd chain fatty acid synthesis), and the metabolism of every cell in the human body. Yet, since vitamin B12 is required for the body to produce folate again, folic acid (vitamin B9) in enough amounts can substitute for many, if not all, of the effects of vitamin B12. When the body lacks sufficient folic acid to produce thymine due to methyl trapping, poor synthesis of DNA occurs. Therefore, the majority of symptoms associated with vitamin B12 deficiency are actually symptoms of folate deficiency. This includes all the effects of megaloblastosis and pernicious anemia. All known B12-related deficiency syndromes return to normal when adequate folic acid is available, with the exception of those that are specifically linked to the growth of their respective substrates, homocysteine and methylmalonic acid, and the vitamin B12-dependent enzymes methylmalonyl Coenzyme A mutase and 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR), also called methionine synthase. The reactive C-Co bond in Coenzyme B12 contributes to three main categories of enzyme-catalyzed reactions[1][2].
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| References |
[1]. http://en.wikipedia.org/wiki/Vitamin_B12
[2]. Banerjee, R. and S.W. Ragsdale, The many faces of vitamin B12: catalysis by cobalamin-dependent enzymes. Annu Rev Biochem, 2003. 72: p. 209-47. |
| Molecular Formula |
C63H92CON14O14P
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|---|---|
| Molecular Weight |
1359.41
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| Exact Mass |
1358.5982
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| CAS # |
68-19-9
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| SMILES |
[Co+2].P(=O)(O[H])(O[C@]1([H])[C@@]([H])(C([H])([H])O[H])O[C@@]([H])([C@]1([H])O[H])N1C([H])=NC2C([H])=C(C([H])([H])[H])C(C([H])([H])[H])=C([H])C1=2)OC([H])(C([H])([H])[H])C([H])([H])N([H])C(C([H])([H])C([H])([H])[C@@]1(C([H])([H])[H])C2C(C([H])([H])[H])=C3[C@@]([H])(C([H])([H])C([H])([H])C(N([H])[H])=O)C(C([H])([H])[H])(C([H])([H])[H])C(C([H])=C4[C@@]([H])(C([H])([H])C([H])([H])C(N([H])[H])=O)[C@](C([H])([H])[H])(C([H])([H])C(N([H])[H])=O)C(C(C([H])([H])[H])=C5[C@@]([H])(C([H])([H])C([H])([H])C(N([H])[H])=O)[C@](C([H])([H])[H])(C([H])([H])C(N([H])[H])=O)[C@](C([H])([H])[H])([C@@]([H])([C@]1([H])C([H])([H])C(N([H])[H])=O)N=2)[N-]5)=N4)=N3)=O.[C-]([H])([H])[H] |t:73,99,132|
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| Synonyms |
Docigram Vitamin B12 Cyanocobalamin
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
DMSO : ~20.83 mg/mL (~14.14 mM)
H2O : ~6.25 mg/mL (~4.24 mM) |
|---|---|
| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.5 mg/mL (1.70 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (1.70 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. View More
Solubility in Formulation 3: 50 mg/mL (33.94 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 0.7356 mL | 3.6781 mL | 7.3561 mL | |
| 5 mM | 0.1471 mL | 0.7356 mL | 1.4712 mL | |
| 10 mM | 0.0736 mL | 0.3678 mL | 0.7356 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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