Prednisone Impurity 13

Product Name: Prednisone Impurity 13
CAS No.: 91160-89-3
Chemical Name: Prednisone Impurity 13
Synonyms: BNKY015-BD02;Prednisone Impurity 5;Prednisone Impurity 13;Budesonide Impurity 53;9α-bromo-11β,16α,17α,21-tetrahydroxypregnane-1,4-diene-3,20-dione-21-acetate;9α-bromo-11β,16α,17α,21-tetrahydroxypregnane-1,4-diene-3,20-dione-21-acetate;(11β,16α)-21-(Acetyloxy)-9-bromo-11,16,17-trihydroxy-pregna-1,4-diene-3,20-dione;Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9-bromo-11,16,17-trihydroxy-, (11β,16α)-;((8S,9R,10S,11S,13S,14S,16R,17S)-9-bromo-11,16,17-trihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate;2-((8S,9R,10S,11S,13S,14S,16R,17S)-9-bromo-11,16,17-trihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate
CBNumber: CB44844383
Molecular Formula: C23H29BrO7
Formula Weight: 497.38
MOL File: 91160-89-3.mol

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Prednisone Impurity 13 Property

Boiling point:: 636.3±55.0 °C(Predicted)
Density: 1.53±0.1 g/cm3(Predicted)
pka: 11.57±0.70(Predicted)

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Hazard and Precautionary Statements (GHS)

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Prednisone Impurity 13 Chemical Properties,Usage,Production

Uses

(11β,16α)-21-(Acetyloxy)-9-bromo-11,16,17-trihydroxy-pregna-1,4-diene-3,20-dione is used as a reactant in the synthesis of triamcinolone acetonide, a synthetic corticosteroid used to treat skin conditions.

Synthesis

50.5 g of 2-((8S,10S,13S,14S,16R,17S)-16,17-dihydroxy-10,13-dimethyl-3-oxo-6,7,8,10,12,13,14,15,16,17-decahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate was dissolved in 1500 ml of acetone, 70 ml of 5% perchloric acid was added, the temperature was lowered to 0°C with stirring, and 45 g of N-bromosuccinimide was added and stirred After the reaction was completed, 50 ml of 20% sodium sulfite aqueous solution was added, the acetone was concentrated, the water was separated, filtered, and dried to obtain 62 g of Prednisone Impurity 13 (9α-bromo-11β,16α,17α,21-tetrahydroxypregnane-1,4-diene-3,20-dione-21-acetate).

Prednisone Impurity 13 Preparation Products And Raw materials

Raw materials

Preparation Products

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91160-89-3, Prednisone Impurity 13Related Search:

Prednisone Impurity 13

9α-bromo-11β,16α,17α,21-tetrahydroxypregnane-1,4-diene-3,20-dione-21-acetate

BNKY015-BD02

(11β,16α)-21-(Acetyloxy)-9-bromo-11,16,17-trihydroxy-pregna-1,4-diene-3,20-dione

Pregna-1,4-diene-3,20-dione, 21-(acetyloxy)-9-bromo-11,16,17-trihydroxy-, (11β,16α)-

9α-bromo-11β,16α,17α,21-tetrahydroxypregnane-1,4-diene-3,20-dione-21-acetate

Prednisone Impurity 5

Budesonide Impurity 53

((8S,9R,10S,11S,13S,14S,16R,17S)-9-bromo-11,16,17-trihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate

2-((8S,9R,10S,11S,13S,14S,16R,17S)-9-bromo-11,16,17-trihydroxy-10,13-dimethyl-3-oxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl)-2-oxoethyl acetate

91160-89-3

C23H29BrO7