pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.38	IUPAC digitized pKa	0	-1	Cn1cnc(O)cc1=S	Cn1cnc([O-])cc1=S	mol7338	Cn1cnc(O)cc1=S