CAS 53179-13-8 appears in our catalog under these names: Pirfenidone, 5-Methyl-N-phenyl-2-1H-pyridone (Pirfenidone), >95% (HPLC), Pirfenidone/ 99.93% (existing batch purity), Pirfenidone - Bio-X â„¢, 5-Methyl-N-phenyl-2-1H-pyridone. Offered by: Chemat Brand, TRC, Mikromol, TargetMol, GLPBio. Available pack sizes: on request, 10g, 1g, 50mg, 250mg, 5g, 25mg, 100mg.