pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.47	IUPAC digitized pKa	0	-1	Cc1[nH]c2ccccc2c1C=O	Cc1[n-]c2ccccc2c1C=O	mol11321	Cc1[nH]c2ccccc2c1C=O