• Methanone, bis(4-(dimethylamino)phenyl)- (Michler's ketone)
• 1-Naphthalenol, 4-[(4-ethoxyphenyl)azo]- (Solvent Red 3)
• 1-Naphthalenemethanol, αα-bis[4-(diethylamino)phenyl]-4-(ethylamino)- (Solvent Blue 5)
• 1-Naphthalenemethanol, α,α-bis[4-(dimethylamino)phenyl]-4-(phenylamino)- (Solvent Blue 4)
• Guanidine, N,N'-diphenyl- (Diphenylguanidine or DPG)