pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.2	IUPAC digitized pKa	0	-1	CC1(C)C(=O)CC(=O)CC1=O	CC1(C)C(=O)[CH-]C(=O)CC1=O	mol10438	CC1(C)C(=O)CC(=O)CC1=O
4.1999998	OCHEM	0	-1	CC1(C)C(=O)CC(=O)CC1=O	CC1(C)C(=O)[CH-]C(=O)CC1=O	mol10438	CC1(C)C(=O)CC(=O)CC1=O
9.73	IUPAC digitized pKa	-1	-2	CC1(C)C(=O)[CH-]C(=O)CC1=O	CC1(C)C(=O)[CH-]C(=O)[CH-]C1=O	mol10438	CC1(C)C(=O)CC(=O)CC1=O
9.7299995	OCHEM	-1	-2	CC1(C)C(=O)[CH-]C(=O)CC1=O	CC1(C)C(=O)[CH-]C(=O)[CH-]C1=O	mol10438	CC1(C)C(=O)CC(=O)CC1=O