pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.45	IUPAC digitized pKa	0	-1	O=C1CNc2c([nH]cnc2=O)N1	O=C1CNc2c([n-]cnc2=O)N1	mol9678	O=C1CNc2c([nH]cnc2=O)N1