3,5-Pyrazolidinedione, 4-butyl-1,2-diphenyl-4-(hydroxymethyl)-, hexadecanoate 4-Butyl-1,2-diphenyl-4-(hydroxymethyl)-3,5-pyrazolidinedione hexadecanoate 42190-59-0 5-25-02-00417 (Beilstein Handbook Reference) BRN 0871808 Hexadecanoic acid, (4-butyl-3,5-dioxo-1,2-diphenyl-4-pyrazolidinyl)methyl ester Palmitan hydroxymethylfenylbutazon [Czech]