pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.6	IUPAC digitized pKa	0	-1	Cn1c(N)cc2ccccc21	Cn1c([NH-])cc2ccccc21	mol4312	Cn1c(N)cc2ccccc21