2-phenylamino-3-methyl-6-dibuthylaminofluorane(ODB-2)
4,6-diaminoresorcinol dihydrochloride
4,4’-diaminostilbene-2,2’-disulfonic acid(DSD Acid)
2,4-bis(phenylsufone)phenol(DBSP)
2-methyl-4-methoxy diphenylamine(MMD,DPA)
4-diethylamino-2-hydroxybenzophenone-2-carboxylic acid(EBA)