pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.9	IUPAC digitized pKa	0	-1	CCC#CC#CC(=O)O	CCC#CC#CC(=O)[O-]	mol9946	CCC#CC#CC(=O)O
1.91	Datawarrior	0	-1	CCC#CC#CC(=O)O	CCC#CC#CC(=O)[O-]	mol9946	CCC#CC#CC(=O)O
1.9099999666214	QSARToolbox	0	-1	CCC#CC#CC(=O)O	CCC#CC#CC(=O)[O-]	mol9946	CCC#CC#CC(=O)O