pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.23	IUPAC digitized pKa	0	-1	CC#CC#CCC(=O)O	CC#CC#CCC(=O)[O-]	mol9947	CC#CC#CCC(=O)O
3.23000001907349	QSARToolbox	0	-1	CC#CC#CCC(=O)O	CC#CC#CCC(=O)[O-]	mol9947	CC#CC#CCC(=O)O