pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.02	IUPAC digitized pKa	0	-1	C[C@H](C=O)CC(=O)O	C[C@H](C=O)CC(=O)[O-]	mol9324	CC(C=O)CC(=O)O