5-(Iodoacetamido)fluorescein 5-IAF 5-iodoacetamidofluorescein 63368-54-7 Acetamide, N-(3',6'-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthen)-5-yl)-2-iodo- Fluorescein iodoacetamide