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5,6-trans-Vitamin D3(5,6-trans-Cholecalciferol) is an isoform of Vitamin D3, which is converted from Vitamin D3 on the skin surface after light exposure.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $83 | In Stock | In Stock | |
| 5 mg | $198 | In Stock | In Stock | |
| 10 mg | $339 | In Stock | In Stock | |
| 25 mg | $566 | In Stock | In Stock | |
| 50 mg | $791 | In Stock | In Stock | |
| 100 mg | $1,090 | - | In Stock | |
| 500 mg | $2,190 | - | In Stock |
| Description | 5,6-trans-Vitamin D3(5,6-trans-Cholecalciferol) is an isoform of Vitamin D3, which is converted from Vitamin D3 on the skin surface after light exposure. |
| In vitro | The dissociation constants of vitamin D receptor (VDR) for 25-hydroxytachysterol3, 25-hydroxy-5,6-trans-vitamin D3, and 5,6-trans-vitamin D3 were 22, 58, and 560 nM, respectively. The dissociation constants for 7-dehydrocholesterol, tachysterol, and lumisterol were greater than 20 microM. In conclusion, vitamin D3, its photoisomers and the photoisomers of previtamin D3 have antiproliferative activity in cultured human keratinocytes.[1]. |
| Synonyms | Cholecalciferol EP Impurity A, 5,6-trans-Colecalciferol, 5,6-trans-Cholecalciferol |
| Molecular Weight | 384.64 |
| Formula | C27H44O |
| Cas No. | 22350-41-0 |
| Smiles | CC(C)CCC[C@@H](C)[C@H]1CC[C@H]2\C(CCC[C@]12C)=C\C=C1/C[C@@H](O)CCC1=C |
| Storage | keep away from direct sunlight,store under nitrogen | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | ||||||||||||||||||||||||||||||||||||||||
| Solubility Information | Ethanol: 30 mg/mL (78 mM), Sonication is recommended. DMF: 10 mg/mL (26 mM), Sonication is recommended. Ethyl Acetate: 20 mg/mL (52 mM), Sonication is recommended. DMSO: 1 mg/mL (2.6 mM), Sonication is recommended. | ||||||||||||||||||||||||||||||||||||||||
Solution Preparation Table | |||||||||||||||||||||||||||||||||||||||||
DMSO/DMF/Ethyl Acetate/Ethanol
DMF/Ethyl Acetate/Ethanol
Ethyl Acetate/Ethanol
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Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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