pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.67	IUPAC digitized pKa	1	0	Cn1cc2cc[nH+]cc2c1	Cn1cc2ccncc2c1	mol7808	Cn1cc2ccncc2c1