TRANSFORMED STEROIDS. 188. SYNTHESIS ROUTES FOR 11β-HYDROXY-SUBSTITUTED 16-DEHYDRO-, 17β-HYDROXY- AND 16α,17α-EPOXYPREGNANES BASED ON 17α-ETHYNYL-11β-DIHYDROXYANDROSTANES

R&D Labs maybe for 641-77-0

• Huangshi Meifeng Chemical Co.,ltd.

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• Beijing Green Guardee Technology CO,.LTD

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• ANTAI BIO-TECH CO LTD

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• Accela ChemBio Inc.

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