6-IAF 6-Iodoacetamidofluorescein 73264-12-7 Acetamide, N-(3',6'-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthen)-6-yl)-2-iodo- N-(3',6'-Dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthen)-6-yl)-2-iodoacetamide