pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.71	IUPAC digitized pKa	0	-1	Nc1c(S(=O)(=O)O)ccc2ccccc12	Nc1c(S(=O)(=O)[O-])ccc2ccccc12	mol5282	Nc1c(S(=O)(=O)O)ccc2ccccc12
1.71000003814697	QSARToolbox	0	-1	Nc1c(S(=O)(=O)O)ccc2ccccc12	Nc1c(S(=O)(=O)[O-])ccc2ccccc12	mol5282	Nc1c(S(=O)(=O)O)ccc2ccccc12