Home > All categories> Biochemicals and Pharmaceutical Chemicals> Pharmaceutical Impurities> [2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate

[2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate

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Origin: China

Cas No: 3044-42-6

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

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CAS No.: 3044-42-6 Formula: C23H28O5 Molecular Weight: 384.46500

Description

21-Acetoxy-11β-hydroxypregna-1,4,16-triene-3,20-dione is an intermediate in the synthesis of Budesonide related derivatives.

Basic Info

Chemical Name	[2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
Synonyms	(11\|A)-11-hydroxy-3,20-dioxopregna-1,4,16-trien-21-yl acetate;
CAS No.	3044-42-6
Molecular Formula	C23H28O5
Molecular Weight	384.46500
PSA	80.67000
LogP	2.93360

Properties

Density	1.24g/cm3
Boiling Point	553.4ºC at 760mmHg
Flash Point	189.9ºC
Refractive Index	1.584

Synthesis Route

[2-[(8S,9S,10R,11S,13S,14S,17R)-17-acetyloxy-11-hydroxy-10,13-dimethyl-3-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate→[2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate+11β,21-dihydroxy-1,4,16-pregnatriene-3,20-dione
[2-[(8S,9S,10R,11S,13S,14S,17R)-17-acetyloxy-11-hydroxy-10,13-dimethyl-3-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate→[2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
cortancyl→[2-[(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate

Precursor

Downstream Product

methyl 11-hydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-3-oxo-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-16-carboxylate

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