pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.8	IUPAC digitized pKa	0	-1	CC(=O)CCCC(=O)O	CC(=O)CCCC(=O)[O-]	mol2568	CC(=O)CCCC(=O)O
4.66	Datawarrior	0	-1	CC(=O)CCCC(=O)O	CC(=O)CCCC(=O)[O-]	mol2568	CC(=O)CCCC(=O)O
4.6599998	OCHEM	0	-1	CC(=O)CCCC(=O)O	CC(=O)CCCC(=O)[O-]	mol2568	CC(=O)CCCC(=O)O
4.80000019073486	QSARToolbox	0	-1	CC(=O)CCCC(=O)O	CC(=O)CCCC(=O)[O-]	mol2568	CC(=O)CCCC(=O)O
4.65999984741211	QSARToolbox	0	-1	CC(=O)CCCC(=O)O	CC(=O)CCCC(=O)[O-]	mol2568	CC(=O)CCCC(=O)O