pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.57	IUPAC digitized pKa	0	-1	O=C1CCN(c2ccccc2)N1	O=C1CCN(c2ccccc2)[N-]1	mol6934	O=C1CCN(c2ccccc2)N1