pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.77	IUPAC digitized pKa	1	0	Cn1c[nH+]c2ccncc21,Cn1cnc2cc[nH+]cc21	Cn1cnc2ccncc21	mol7988	Cn1cnc2ccncc21