2-Amino-6-((4-hydroxyphenyl)azo)-4(1H)-pyrimidinone 4(1H)-Pyrimidinone, 2-amino-6-((4-hydroxyphenyl)azo)- (9CI) 40199-40-4 6-(4-Hydroxyphenylazo)isocytosine 6-(p-Hydroxyphenylazo)isocytosine NSC 196577