16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)
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16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)
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CAS No:
173350-27-1
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Chemical Name:
16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)
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Synonyms:
16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal);16,17-Epoxypregna-5,9(11)-diene-3,20-dione3,20-diethyleneketal
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CAS No:
16,17-Epoxypregna-5,9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal) Use and Manufacturing
Available 16α, 17α-epoxypregest-4-ene-3, 11, 20-trione (ie 16α, 17α-epoxy-11-ketoprogesterone) through (3-position, 20-position ketone and Ethylene glycol) ketalization, (11-position ketone) reduction (to 11-position hydroxyl), (9, 11-position dehydration) elimination [formation of 9 (11)-position double bond] to prepare the product.
Betamethasone intermediate.
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