pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.2	IUPAC digitized pKa	0	-1	CON=C1C=CC(=NO)C=C1	CON=C1C=CC(=N[O-])C=C1	mol10179	CON=C1C=CC(=NO)C=C1