1,3-Diphenyl-4-((p-hydroxyanilino)methylene)-2-pyrazolin-5-one 2-Pyrazolin-5-one, 1,3-diphenyl-4-((p-hydroxyanilino)methylene)- 24664-61-7 5-25-15-00179 (Beilstein Handbook Reference) BRN 0701208