pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
11.31	IUPAC digitized pKa	1	0	NC(=[NH2+])Cc1cccc2ccccc12	N=C(N)Cc1cccc2ccccc12	mol6276	N=C(N)Cc1cccc2ccccc12