5-(3,5-disubstituted phenylazo)-2-hydroxybenzene-acetic acids an
5-acylamino-2-arylazo, nitro, or...
5-C.sub.1-4 alkoxy-2-C.sub.1-2 alkyl-2',4'-dinitro-6'-halo-4-sub
5-chloro-4-fluoropyrimidinyl substituted diazopyridone
5-[4-(4,6-dimethyl-2-pyrimidinylsulfamoyl)phenylazo]acetylsalicy