3,3'-BIS[N,N-BIS(CARBOXYMETHYL)AMINOMETHYL]PHENOLPHTHALEIN

1,1-Bis[3-[N,N-di(carboxymethyl)aminomethyl]-4-hydroxyphenyl]isobenzofuran-3-one

3,3-Bis[4-hydroxy-3-[[bis(carboxymethyl)amino]methyl]phenyl]-1(3H)-isobenzofuranone

N,N’-[[3-oxo-1(3H)-isobenzofuranylidene]bis(6-hydroxy-3,1-phenylene)methylene]bis(N-carboxymethyl)Glycine