pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.0	IUPAC digitized pKa	0	-1	O=C(O)c1cc[nH]c1	O=C([O-])c1cc[nH]c1	mol9358	O=C(O)c1cc[nH]c1
4.98	Datawarrior	0	-1	O=C(O)c1cc[nH]c1	O=C([O-])c1cc[nH]c1	mol9358	O=C(O)c1cc[nH]c1
4.45	OCHEM	0	-1	O=C(O)c1cc[nH]c1	O=C([O-])c1cc[nH]c1	mol9358	O=C(O)c1cc[nH]c1
5.01000022888184	QSARToolbox	0	-1	O=C(O)c1cc[nH]c1	O=C([O-])c1cc[nH]c1	mol9358	O=C(O)c1cc[nH]c1