BLACK 500

2'-Anilino-6'-[N-ethyl-N-(3-ethoxypropyl)amino]-3'-methylspiro[phthalide-3,9'-[9H]xanthene]

2'-anilino-6'-((3-ethoxypropyl)ethylamino)-3'-methylspiro(isobenzo-3-oxofuran)-1-(1H)-9'-xanthene

6'-[(3-Ethoxypropyl)ethyl amino]-3'-methyl-2'-(phenylamino)-spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one