pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.32	IUPAC digitized pKa	0	-1	C#CCC(=O)O	C#CCC(=O)[O-]	mol9120	C#CCC(=O)O
3.31	Datawarrior	0	-1	C#CCC(=O)O	C#CCC(=O)[O-]	mol9120	C#CCC(=O)O
3.3099999	OCHEM	0	-1	C#CCC(=O)O	C#CCC(=O)[O-]	mol9120	C#CCC(=O)O
3.30999994277954	QSARToolbox	0	-1	C#CCC(=O)O	C#CCC(=O)[O-]	mol9120	C#CCC(=O)O