| Company Name: |
J & K SCIENTIFIC LTD.
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| Tel: |
010-82848833 400-666-7788 |
| Email: |
jkinfo@jkchemical.com |
| Products Intro: |
Product Name:PrevitaMin D2
CAS:21307-05-1
Package:10Mg,1Mg
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| Company Name: |
Chemsky（shanghai）International Co.,Ltd.
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| Tel: |
021-50135380 |
| Email: |
shchemsky@sina.com |
| Products Intro: |
Product Name:PrevitaMin D2 (90%)
CAS:21307-05-1
Purity:98% Package:1820RMB/1Mg; 11200RMB/10Mg
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| Company Name: |
BOC Sciences
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| Tel: |
1-631-485-4226; 16314854226 |
| Email: |
info@bocsci.com |
| Products Intro: |
Product Name:Previtamin D2
CAS:21307-05-1
Remarks:Previtamin D2 is an impurity of vitamin D2, which is commonly used for the prevention and treatment
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| Company Name: |
Shanghai Kewel Chemical Co., Ltd.
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| Tel: |
021-64609169 18901607656 |
| Email: |
greensnown@163.com |
| Products Intro: |
Product Name:Ergocalciferol Impurity 8
CAS:21307-05-1
Purity:95+ HPLC; Package:10mg;25mg;50mg;100mg
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| | Previtamin D2 Basic information |
| Product Name: | Previtamin D2 | | Synonyms: | (3,6Z,22E)-9,10-Secoergosta-5(10),6,8,22-tetraen-3-ol;(6Z,22E)-9,10-Secoergosta-5(10),6,8,22-tetren-3β-ol;PrevitaMin D2 (90%);Preergocalciferol;Previtamin D;Previtamin D2;Ergocalciferol Impurity 8;3-Cyclohexen-1-ol, 3-[(1Z)-2-[(1R,3aR,7aR)-2,3,3a,6,7,7a-hexahydro-7a-methyl-1-[(1R,2E,4R)-1,4,5-trimethyl-2-hexenyl]-1H-inden-4-yl]ethenyl]-4-methyl-, (1S)- | | CAS: | 21307-05-1 | | MF: | C28H44O | | MW: | 396.65 | | EINECS: | | | Product Categories: | Chiral Reagents;Intermediates & Fine Chemicals;Pharmaceuticals | | Mol File: | 21307-05-1.mol |  |
| | Previtamin D2 Chemical Properties |
| Boiling point | 503.8±29.0 °C(Predicted) | | density | 1.020±0.06 g/cm3(Predicted) | | storage temp. | Amber Vial, -20°C Freezer, Under Inert Atmosphere | | solubility | Chloroform (Slightly), Ethyl Acetate (Slightly) | | form | Oil to Sticky Solid | | pka | 14.84±0.60(Predicted) | | color | Colourless to Pale Yellow | | Stability: | Light Sensitive, Temperature Sensitive |
| | Previtamin D2 Usage And Synthesis |
| Chemical Properties | Pale Yellow Oil | | Uses | The main decomposition product of Vitamin D2. Ergosterol photoisomerization product |
| | Previtamin D2 Preparation Products And Raw materials |
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