pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.63	OCHEM	-1	-2	O=P([O-])(O)c1cc(Cl)ccc1Cl	O=P([O-])([O-])c1cc(Cl)ccc1Cl	mol28993	O=P(O)(O)c1cc(Cl)ccc1Cl
6.63000011444092	QSARToolbox	-1	-2	O=P([O-])(O)c1cc(Cl)ccc1Cl	O=P([O-])([O-])c1cc(Cl)ccc1Cl	mol28993	O=P(O)(O)c1cc(Cl)ccc1Cl