pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.28	IUPAC digitized pKa	1	0	O=C1C[C@H](c2ccccc2)[NH2+]N1	O=C1C[C@H](c2ccccc2)NN1	mol6935	O=C1CC(c2ccccc2)NN1