pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.18	IUPAC digitized pKa	1	0	Cn1ccc(=N)[nH+]c1,Cn1ccc(=[NH2+])nc1	Cn1ccc(=N)nc1	mol4156	Cn1ccc(=N)nc1