6-(4,6-Dichlorotriazinyl)aminofluorescein 6-Dtaf 82169-58-2 Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 6-((4,6-dichloro-1,3,5-triazin-2-yl)amino)-3',6'-dihydroxy-