CAS:51333-05-2|21-Acetoxy-11b-hydroxy-16a,17a-propylmethylenedioxpregna-1,4-diene-3,20-dione

Catalogue Number:A165740
Chemical Name:21-Acetoxy-11b-hydroxy-16a,17a-propylmethylenedioxpregna-1,4-diene-3,20-dione
Synonyms:(11β,16α)-21-(Acetyloxy)-16,17-[butylidenebis(oxy)]-11-hydroxy-pregna-1,4-diene-3,20-dione; Budesonide 21-acetate; 21-Acetyloxy Budesonide; Budesonide Impurity K (EP); Budesonide EP Impurity K
Impurity:Budesonide EP Impurity K
CAS Number:51333-05-2
Molecular Formula:C₂₇H₃₆O₇
Appearance:White to Pale Yellow Solid
Melting Point:156-158°C (dec.)
Molecular Weight:472.57
Storage:4°C
Solubility:Chloroform (Slightly), Methanol (Slightly)
Category:Standards; Steroids;
Applications:21-Acetoxy-11b-hydroxy-16a,17a-propylmethylenedioxpregna-1,4-diene-3,20-dione (Budesonide EP Impurity K) is an impurity of Budesonide (B689460), a non-halogenated glucocorticoid intended for the local treatment of lung disease.
References:Ryrfeldt, Å., et al.: Eur. J. Respir. Dis., 122, 86 (1981); Vestbo, J., et al.: Lancet, 353, 1819 (1999)
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