英文别名Ethyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide; ethyl 4-hydroxy-1,1-dioxo-2H-1λ6,2-benzothiazine-3-carboxylate; 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic Acid; 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylic acid ethyl ester 1,1-dioxide; Piroxicam Impurity H; 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-, ethyl ester, 1,1-dioxide 
