pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.24	IUPAC digitized pKa	0	-1	O=C(O)c1c(O)cccc1[N+](=O)[O-]	O=C([O-])c1c(O)cccc1[N+](=O)[O-]	mol1791	O=C(O)c1c(O)cccc1[N+](=O)[O-]
2.24000000953674	QSARToolbox	0	-1	O=C(O)c1c(O)cccc1[N+](=O)[O-]	O=C([O-])c1c(O)cccc1[N+](=O)[O-]	mol1791	O=C(O)c1c(O)cccc1[N+](=O)[O-]