The title compound (systematic name: pyridinium 4-methyl-benzene-sulfonate), C 5 H 6 N + ·C 7 H 7 O 3 S - , is the pyridinium salt of para -toluene-sulfonic acid. In the crystal, classical N-H⋯O hydrogen bonds as well as C-H⋯O contacts connect the cationic and anionic entities into sheets lying parallel to the ab plane.
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