Celecoxib benzylic hydroxy impurity

Celecoxib benzylic hydroxy impurity product with CAS: 1061214-09-2 is related to Celecoxib. It is also known with other names such as 4-((Z)-((Z)-1,1,1-trifluoro-4-hydroxy-4-p-tolylbut-3-en-2-ylidene)amino) benzenesulfonamide; p-[(Z)-(Z)-3-Hydroxy-3-(p-tolyl)-1-(trifluoromethyl)-2-propenylideneamino]benzenesulfonamide. Celecoxib benzylic hydroxy impurity used for Abbreviated New Drug Application (ANDA) & DMF filing to FDA, toxicity study of respective drug formulation, Quality Control (QC), and analytical studies during commercial production of Celecoxib.