Piroxicam Impurity F
[CAS# 76508-37-7]

Identification

• Name: Piroxicam Impurity F
• Synonyms: 3-Oxo-1,2-benzisothiazole-2(3H)-acetic acid 1-methylethyl ester 1,1-dioxide
• Molecular Formula: C₁₂H₁₃NO₅S
• Molecular Weight: 283.30
• CAS Registry Number: 76508-37-7
• EC Number: 641-749-9

Properties

• Solubility: Very slightly soluble (0.27 g/L) (25 ºC), Calc.^*
• Density: 1.391±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Melting point: 119-121 ºC (isopropanol )^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** Zia-ur-Rehman, Muhammad; Acta Crystallographica, Section E: Structure Reports Online 2012, V68(9), Po2761.