3,5-Dimethyl-4-(5-oxo-4-pentyl-3-pyrazolin-3-yl)-2-pyrrolecarboxylic acid ethyl ester 4-Pentyl-3-(2,4-dimethyl-5-carboethoxypyrrolyl-3)-pyrazolone-5 Pyrrole-2-carboxylic acid, 3,5-dimethyl-4-(5-oxo-4-pentyl-3-pyrazolin-3-yl)-, ethyl ester UX9372100