pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.36	IUPAC digitized pKa	1	0	C1=Nc2ncc[nH+]c2CN1,C1=Nc2[nH+]ccnc2CN1,C1=[NH+]c2nccnc2CN1	C1=Nc2nccnc2CN1	mol8138	C1=Nc2nccnc2CN1