pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.8	IUPAC digitized pKa	0	-1	O=C(O)c1nc2ccccc2nc1C(=O)O	O=C([O-])c1nc2ccccc2nc1C(=O)O	mol11273	O=C(O)c1nc2ccccc2nc1C(=O)O
1.62	IUPAC digitized pKa	0	-1	O=C(O)c1nc2ccccc2nc1C(=O)O	O=C([O-])c1nc2ccccc2nc1C(=O)O	mol11273	O=C(O)c1nc2ccccc2nc1C(=O)O
3.31	IUPAC digitized pKa	-1	-2	O=C([O-])c1nc2ccccc2nc1C(=O)O	O=C([O-])c1nc2ccccc2nc1C(=O)[O-]	mol11273	O=C(O)c1nc2ccccc2nc1C(=O)O
3.64	IUPAC digitized pKa	-1	-2	O=C([O-])c1nc2ccccc2nc1C(=O)O	O=C([O-])c1nc2ccccc2nc1C(=O)[O-]	mol11273	O=C(O)c1nc2ccccc2nc1C(=O)O