pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.24	OCHEM	0	-1	CC(C)(C)[P@@H](=O)O	CC(C)(C)[P@@H](=O)[O-]	mol2225	CC(C)(C)[P@@H](=O)O
4.23999977111816	QSARToolbox	0	-1	CC(C)(C)[P@@H](=O)O	CC(C)(C)[P@@H](=O)[O-]	mol2225	CC(C)(C)[P@@H](=O)O