1-(p-Anisyl)-2-carboxy­ethanaminium p-toluene­sulfonate

The cation and anion in the title compound, C₁₀H₁₄NO₃⁺·C₇H₇O₃S⁻, (I), are linked by a short carboxyl­ic acid–sulfonate O⋯O hydrogen bond. Adjacent ion pairs are linked by hydrogen bonds involving the ammonium unit, giving rise to tightly held chains that run along the b axis of the monoclinic unit cell.