firocoxib and its Impurities
Firocoxib currently approved for veterinary use in dogs and horses under the brand names Equioxx and Previcox. It is a cycooxygenase-2 selective non-steroidal anti-inflammatory drug.. Reference standards of Firocoxib API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below


3-(Cyclopropylmethoxy)-4-hydroxy-5,5-dimethyl-4-(4-(methylsulfonyl)phenyl)dihydrofuran-2(3H)-one
3-(Cyclopropylmethoxy)-4-hydroxy-5,5-dimethyl-4-(4-(methylsulfonyl)phenyl)dihydrofuran-2(3H)-one
Catalogue No.:PA 33 07530
CAS :
NA
Molecular Formula : C17H22O6S
Molecular Weight : 354.42


2-(Cyclopropylmethoxy)-acetic Acid 1,1-Dimethyl-2-[4-(methylsulfonyl)phenyl]-2-oxoethyl Ester
2-(Cyclopropylmethoxy)-acetic Acid 1,1-Dimethyl-2-[4-(methylsulfonyl)phenyl]-2-oxoethyl Ester
Catalogue No.:PA 33 07610
CAS :
246869-15-8
Molecular Formula : C17H22O6S
Molecular Weight : 354.42