Isopropyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity I) Price Not Available 5mg Isopropyl 4-Hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity I) Supplier Page Catalog Number R011213 Molecular Formula C12H13NO5S CAS# 76508-35-5 Purity ≥95% Inchi InChI=1S/C12H13NO5S/c1-7(2)18-12(15)10-11(14)8-5-3-4-6-9(8)19(16,17)13-10/h3-7,13-14H,1-2H3 Inchi Key KCSORUCCHDBUFQ-UHFFFAOYSA-N SMILES CC(C)OC(=O)C1=C(C2=CC=CC=C2S(=O)(=O)N1)O Size 5mg Supplier Page https://www.musechem.com/product/R011213.html