26628-47-7 3-Diethylaminobenzo(a)fluoran 52636-82-5 59141-18-3 9-(Diethylamino)spiro(12H-benzo(a)xanthene-12,1'(3'H)-isobenzofuran)-3'-one EINECS 247-853-7 Spiro(12H-benzo(a)xanthene-12,1'(3'H)-isobenzofuran)-3'-one, 9-(diethylamino)- Spiro(isobenzofuran-1(3H), 12'-(12H)benzo(a)xanthene)-9'-diethylamino-3-one