(3)-7-Dehydrochlesterol
7-Dehydrocholesterol
CAS: 434-16-2
Molecular Formula: C27H44O
(3)-7-Dehydrochlesterol - Names and Identifiers
| Name | 7-Dehydrocholesterol |
| Synonyms | Provitamine Provitamin D3 7-Dehydrocholesterol cholesta-5,7-dien-3-ol Cholesta-5,7-dien-3-ol (3)-7-Dehydrochlesterol 7,8-didehydrocholesterol cholesta-5,7-dien-3-beta-ol 3-Hydroxycholesta-5,7-diene (3beta)-cholesta-7-dien-3-ol (3-beta)-cholesta-7-dien-3-ol (3beta)-cholesta-5,7-dien-3-ol (3beta)-Cholesta-5,7-dien-3-ol Cholesta-5,7-dien-3-ol, (3beta)- |
| CAS | 434-16-2 |
| EINECS | 207-100-5 |
| InChI | InChI=1/C27H44O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9-10,18-19,21,23-25,28H,6-8,11-17H2,1-5H3/t19-,21+,23-,24+,25+,26+,27-/m1/s1 |
| InChIKey | UCTLRSWJYQTBFZ-DDPQNLDTSA-N |
(3)-7-Dehydrochlesterol - Physico-chemical Properties
| Molecular Formula | C27H44O |
| Molar Mass | 384.64 |
| Density | 0.9717 (rough estimate) |
| Melting Point | 148-152°C(lit.) |
| Boling Point | 451.27°C (rough estimate) |
| Specific Rotation(α) | -116 º (C=1, CHCL3) |
| Flash Point | 212.3°C |
| Water Solubility | Insoluble |
| Solubility | Insoluble in water |
| Vapor Presure | 8.08E-12mmHg at 25°C |
| Appearance | Pale yellow crystal powder |
| Color | White to Yellow |
| Merck | 13,2887 |
| BRN | 2224615 |
| pKa | 14.91±0.70(Predicted) |
| Storage Condition | -20°C |
| Stability | Light Sensitive |
| Sensitive | Photoair sensitivity |
| Refractive Index | 1.5100 (estimate) |
| MDL | MFCD00003624 |
| Physical and Chemical Properties | Plate-like crystals (aqueous methanol/ether). Melting point 150-151 °c (anhydrous). [Α] D-113.6 ° (chloroform). It is easy to oxidize in open air. |
(3)-7-Dehydrochlesterol - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | FZ5650000 |
| FLUKA BRAND F CODES | 8-10-23 |
| HS Code | 29061990 |
(3)-7-Dehydrochlesterol - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| traits | 7-dehydrocholesterol is white-like crystalline powder, light yellow crystalline powder |
| introduction | 7-dehydrocholesterol is separated and extracted from pig skin, and can also be obtained by acylation, oxidation, hydrazone, hydrazone and saponification of cholesterol, and a pharmaceutical intermediate synthesized by saponification reaction of 7-dehydrocholesterol. |
| use | 7-use of dehydrocholesterol: 1. important intermediates for synthesis of vitamin D3 2. additives in skin care and sunscreen cosmetics 3. other laboratory reagents intermediates of vitamin D3. |
| production method | separation and extraction from pigskin can also be prepared by esterification, bromination, elimination and hydrolysis of cholesterol. |
Last Update：2024-04-09 21:01:54
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