2',4'-Bis(N,N'-di(carboxymethyl)aminomethyl)fluorescein 2,4-Bis(N,N'-di(carboxymethyl)aminomethyl)fluorescein 3147-15-7 4370-07-4 EINECS 221-564-6 Glycine, N,N'-((3',6'-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthene)-2',4'-diyl)bis(methylene))bis(N-(carboxymethyl)- N,N'-((3',6'-Dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthene)-2',4'-diyl)bis(methylene))bis(N-(carboxymethyl)glycine)