for the following products
2'-Anilino-6'-(diethylamino)-3'-methylspiro[isobenzofuran-1(3H),9'-[9h]xanthene]-3-one | 2-Phenylamino-3-methyl-6-diethylaminofluoran | 3-di-Ethylamino-6-methyl-7-anilinofluoran | Wincon-1 and 7-Anilino-3-diethylamino-6-methylfluoran
