別名
methyl 4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxylate 1,1-dioxide / 2H-1,2-Benzothiazine-3-carboxylic acid, 4-hydroxy-2-methyl-, methylester, 1,1-dioxide / Methyl 4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxylate 1,1-dioxide (Piroxicam Impurity)