pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.55	IUPAC digitized pKa	2	1	N#[N+]c1cccc(C(O)=[OH+])c1	N#[N+]c1cccc(C(=O)O)c1	mol10383	N#[N+]c1cccc(C(=O)O)c1