pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.58	IUPAC digitized pKa	0	-1	Cn1c(=O)nc[nH]c1=O	Cn1c(=O)nc[n-]c1=O	mol9161	Cn1c(=O)nc[nH]c1=O