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