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Celecoxib Impurities

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PHR1707   4-[3-(4-METHYLPHENYL)-5- (TRIFLUOROMETHYL)- 1H-PYRAZOL-1-YL] BENZENESULFONAMIDE (Celecoxib Related Compound B) Pharmaceutical Secondary Standard; Certified Reference Material 4-[3-(4-Methylphenyl)-5-(trifluoromethyl)-1H-pyrazol-1-yl]benzenesulfonamide
PHR1706   4-[5-(3-METHYLPHENYL)-3- (TRIFLUOROMETHYL)- 1H-PYRAZOL-1-YL] BENZENESULFONAMIDE (Celecoxib Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material 4-[5-(3-Methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl]benzenesulfonamide