Li, Chang-liang published the artcileGradient elution HPLC for related substances in parecoxib sodium for injection, Name: Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, the publication is Zhongnan Yaoxue (2014), 12(3), 268-270, database is CAplus.
An HPLC method was developed to determine the relevant substances in parecoxib sodium for injection. An Agilent C18 column (150 mm 脳 4.6 mm, 5 渭m) was used with gradient elution. The flow-rate was 1 mL 路 min-1. The detection wavelength was 214 nm. Parecoxib and the adjacent impurities were effectively separated The sample solution was stable in 12 h at the room temperature The average recoveries low, middle and high concentration of valdecoxib was 100.2%, 100.3% and 99.4%. The method is accurate, reliable and reproducible, and can be used for the quality control of the preparation
Zhongnan Yaoxue published new progress about 198470-85-8. 198470-85-8 belongs to isoxazole, auxiliary class Immunology/Inflammation,COX, name is Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide, and the molecular formula is C19H17N2NaO4S, Name: Sodium ((4-(5-methyl-3-phenylisoxazol-4-yl)phenyl)sulfonyl)(propionyl)amide.
Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem