pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.4	IUPAC digitized pKa	0	-1	Oc1cc(O)ncn1	[O-]c1cc(O)ncn1	mol7377	Oc1cc(O)ncn1
5.4000001	OCHEM	0	-1	Oc1cc(O)ncn1	[O-]c1cc(O)ncn1	mol7377	Oc1cc(O)ncn1