173350-27-1
16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)
CAS: 173350-27-1
Molecular Formula: C25H34O5
173350-27-1 - Names and Identifiers
173350-27-1 - Physico-chemical Properties
| Molecular Formula | C25H34O5 |
| Molar Mass | 414.54 |
| Physical and Chemical Properties | Crystallization. Melting point 160 ℃. |
173350-27-1 - References
| Use | an intermediate of betamethasone. |
| production method | 16 α,17 α-epoxypregnane-4-ene-3, 11,20-trione (I. E., 16 α,17 α-epoxy -11-keto progesterone) by (3-, 20-ketone and ethylene glycol) ketalization, (11-position ketone group) reduction (to 11-position hydroxyl group), (9,11-position dehydration) elimination [formation of 9(11)-position double bond] to prepare the product. |
Last Update：2024-04-09 20:49:11
