terephtyl terephtyl terephtyl is a long-acting synthetic sulfonamide antibiotic used for the treatment of infection caused by susceptible strains. terephtylidentifiers iupac name n‐(4,6‐dimethylpyrimidin‐2‐yl)‐4‐[(e)‐({4‐[(e)‐({4‐ phenyl}imino)methyl]phenyl}methylidene)amino]benzene‐1‐sulfonamide cas number2468-28-2chemical and physical dataformulac32h30n8o4s2molar mass654.76 g·mol−1