119371-24-3 137529-96-5 139361-96-9 166975-78-6 2,4-Dihydro-5-methyl-2-phenyl-4-(phenylazo)-3H-pyrazol-3-one 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-phenyl-4-(phenylazo)- 4314-14-1 5577-43-5 59459-23-3 C.I. 12700 CI 12700 Disperse yellow 16 EINECS 224-330-1 Sudan Yellow 3G