pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
13.7	IUPAC digitized pKa	1	0	Cc1cccc(=[NH2+])n1C	Cc1cccc(=N)n1C	mol6447	Cc1cccc(=N)n1C