Synonyms: N-[(2Z)-3,5-Dimethylthiazol-2(3H)-ylidene]-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide, Meloxicam Imp. C (EP), (Z)-N’-Methylmeloxicam, (Z)-N-(3,5-dimethylthiazol-2(3H)-ylidene)-4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide, Meloxicam Impurity C