pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.25	IUPAC digitized pKa	1	0	Cn1c[nH+]c2ncncc21,Cn1cnc2nc[nH+]cc21,Cn1cnc2[nH+]cncc21	Cn1cnc2ncncc21	mol4897	Cn1cnc2ncncc21
2.29	Datawarrior	1	0	Cn1c[nH+]c2ncncc21,Cn1cnc2nc[nH+]cc21,Cn1cnc2[nH+]cncc21	Cn1cnc2ncncc21	mol4897	Cn1cnc2ncncc21