4-[5-(4-bromophenyl)-3-(trifluoromethyl) pyrazol-1-yl]benzenesulfonamideis a useful trifluoromethylated building block for the preparation of various pharmaceutical compounds of interest, such as PET probes of the COX-2 inhibitor.
Cyclooxygenase inhibitors - Current status and future prospects. 
Selective PGHS-2 Inhibitors: A Rational Approach for Treatment of the Inflammation. 
Synthesis of [11C]celecoxib: A potential PET probe for imaging COX-2 expression.
Synthesis, anti-inflammatory evaluation and docking studies of some new fluorinated fused quinazolines.
Efficient sequential synthesis of PET Probes of the COX-2 inhibitor [ 11C]celecoxib and its major metabolite [11C]SC-62807 and in vivo PET evaluation.
 G.Dannhardt, et al, Eur. J. Med. Chem., 2001, 36(2), pp 109-126.