pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.77	IUPAC digitized pKa	1	0	CNc1c[nH+]cnc1NC,CNc1ncncc1[NH2+]C,CNc1cnc[nH+]c1NC,CNc1cncnc1[NH2+]C	CNc1cncnc1NC	mol4107	CNc1cncnc1NC