pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.94	IUPAC digitized pKa	0	-1	CC#CC#CC(=O)O	CC#CC#CC(=O)[O-]	mol9524	CC#CC#CC(=O)O
1.9400001	OCHEM	0	-1	CC#CC#CC(=O)O	CC#CC#CC(=O)[O-]	mol9524	CC#CC#CC(=O)O
1.94000005722046	QSARToolbox	0	-1	CC#CC#CC(=O)O	CC#CC#CC(=O)[O-]	mol9524	CC#CC#CC(=O)O