pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.37	IUPAC digitized pKa	0	-1	O=[N+]([O-])c1c(O)cccc1O	O=[N+]([O-])c1c([O-])cccc1O	mol9654	O=[N+]([O-])c1c(O)cccc1O
9.46	IUPAC digitized pKa	-1	-2	O=[N+]([O-])c1c([O-])cccc1O	O=[N+]([O-])c1c([O-])cccc1[O-]	mol9654	O=[N+]([O-])c1c(O)cccc1O