pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.67	IUPAC digitized pKa	0	-1	NOCC(=O)O,[NH3+]OCC(=O)[O-]	NOCC(=O)[O-]	mol8493	NOCC(=O)O
4.15	IUPAC digitized pKa	0	-1	NOCC(=O)O,[NH3+]OCC(=O)[O-]	NOCC(=O)[O-]	mol8493	NOCC(=O)O
3.63000011444092	QSARToolbox	0	-1	NOCC(=O)O,[NH3+]OCC(=O)[O-]	NOCC(=O)[O-]	mol8493	NOCC(=O)O
2.87	IUPAC digitized pKa	1	0	[NH3+]OCC(=O)O	NOCC(=O)O,[NH3+]OCC(=O)[O-]	mol8493	NOCC(=O)O