Cat. Name CAS. Structure Purity
R011213 Isopropyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxy 76508-35-5 Isopropyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity I) ≥ 95%