The molecule is an organic heteropentacyclic compound that is calcein in which all four carboxy group hydrogens have been substituted by (acetyloxy)methoxy groups and the hyrodgens of the two hydroxy groups have been substituted by acetyl groups. It is a a non-fluorescent probe cleaved to a fluorescent probe by non-specific intracellular esterases. It has a role as a fluorochrome. It is an acetate ester, an organic heteropentacyclic compound, a gamma-lactone, an oxaspiro compound, a member of 2-benzofurans and a xanthene dye. It derives from a calcein.
acetyloxymethyl 2-[[2-(acetyloxymethoxy)-2-oxoethyl]-[[3',6'-diacetyloxy-7'-[[bis[2-(acetyloxymethoxy)-2-oxoethyl]amino]methyl]-3-oxospiro[2-benzofuran-1,9'-xanthene]-2'-yl]methyl]amino]acetate