Synonyms: 2,7-Bis[N,N-bis(carboxymethyl)aminomethylene]fluorescein;Fluorescein complexon;Calcein;Acetic acid, [(3,6-dihydroxy-2, 7-fluorandiyl)bis(methylenenitrilo)]tetra-;Fluorescein, 2, 7-bis[[bis (carboxymethyl)amino]methyl]-;Glycine, N,N-[ (3,6-dihydroxy-3-oxospiro[isobenzofuran-1(3H), 9-[9H]xanthene]-2,7-diyl)bis(methylene)]bis[N-(carboxymethyl)-;