A second-generation antihistamine, Bepotastine Besylate prevents mast cells from releasing histamine. It’s used to treat seasonal allergies.

Formula: C₂₁H₂₅ClN₂O₃ • C₆H₆O₃S

Molecular weight: 547.06 g/mol

Molecular size: Small

Controlled Substance: No

Precursor: No

Status: Commercial