2320-96-9 4',5'-Dichloro-3',6'-dihydroxyspiro(isobenzofuran-1(3H)-9'-(9H)-xanthene)-3-one 4',5'-Dichlorofluorescein EINECS 219-030-2 Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 4',5'-dichloro-3',6'-dihydroxy-