102417-95-8 21811-74-5 5-((4,6-dichloro-1,3,5-triazin-2-yl)amino)fluorescein 51306-35-5 68425-77-4 93265-91-9 DTAF Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 5-((4,6-dichloro-1,3,5-triazin-2-yl)amino)-3',6'-dihydroxy-