英文名称
1,1,1',1',5,5'-hexamethyl-3,3'-spirobi[2H-indene];4-[(4-methylphenyl)diazenyl]-N-phenylaniline;1,1,1',1'-tetramethyl-5-N-[4-[(4-methylphenyl)diazenyl]phenyl]-5-N'-[4-[(4-nitrophenyl)diazenyl]phenyl]-5-N,5-N'-diphenyl-3,3'-spirobi[2H-indene]-5,5'-diamine