The A1%
1 cm values for valdecoxib at 244 nm were 520 and 420
UV spectrophotometric method has
been developed for the simultaneous estimation of valdecoxib
and tizanidine in pharmaceutical dosage form. The proposed
method is based on the Vierodt’s simultaneous equations. Valdecoxib
absorption maxima at 239.0 nm in methanol. The linearity
was observed in the concentration range of 2–
18 lg mL1 . UV method was used for
bulk form as well as the formulation of the valdecoxib and
was expanded to study the dissolution profile of valdecoxib
tablets. The measurements were done at 241 nm, linear concentration
range was observed to be 3–17 lg mL1
.