7-Dehydrocholesterol CAS 434-16-2
Tosyl isocyanate CAS 4083-64-1
25 9 月, 2020Glyceryl Dioleate cas 25637-84-7
25 9 月, 2020
7-Dehydrocholesterol Typical Properties
| Item tested | Specification | Results |
| Appearance | Pale yellow crystalline powder | complies |
| Melting point | 145-151℃ | 147.2-148.1℃ |
| Specific rotation | -108°~-120° | -113° |
| Loss on drying | <0.5% | 0.25% |
| Residue on ignition | <0.1% | 0.05% |
| Heavy metals | <20ppm | complies |
| Assay | ≥95% | 95.07% |
7-DehydrocholesterolUsage
Intermediate of vitamin D3.
7-Dehydrocholesterol Packaging and Shipping
Packing: 25kg/drum
7-Dehydrocholesterol Storage
Keep in dry place, store in tight closed container.
7-Dehydrocholesterol Chemical properties
Flaky crystals (aqueous methanol/ether). Melting point: 150-151°C (anhydrous). [α] 20/D-113.6° (chloroform). It is easy to oxidize when exposed to the air.