Pirfenidone is an approved active pharmaceutical ingredient mainly applied in clinical medication and preclinical pharmacological research rather than food or cosmetic raw material. It is a first-line oral therapeutic drug for idiopathic pulmonary fibrosis, which suppresses the overproduction of transforming growth factor and inflammatory cytokines to reduce excessive collagen deposition and slow the progression of pulmonary fibrosis in patients. In pharmaceutical quality control laboratories, high-purity product works as pharmacopoeia reference standard complying with USP and EP criteria for content determination and impurity inspection of finished pirfenidone tablets and capsules. Besides clinical application, it is extensively adopted as experimental reagent for in-vivo animal trials targeting hepatic fibrosis, renal fibrosis and skin scarring research, supporting the development of novel anti-fibrotic candidate drugs in medicinal chemistry labs. Relevant structural modification studies also utilize it as parent compound to explore derivatives with improved bioavailability and pharmacological activity.
GHS hazard classification is Warning grade with H315 skin irritation and H319 serious eye irritation hazard statements. Laboratory operators must wear nitrile protective gloves, splash-proof safety goggles and dust-resistant lab coat during powder weighing and solution preparation to prevent dust inhalation, prolonged skin contact and accidental swallowing. All residual solid waste and waste organic solvent containing pirfenidone shall be classified as pharmaceutical hazardous waste and delivered to certified professional disposal institutions following local environmental regulations instead of domestic garbage discard. Existing clinical and animal toxicology data shows mild gastrointestinal discomfort may occur after excessive oral intake, while complete long-term carcinogenicity and reproductive toxicity data from long-term feeding tests remain insufficient. Continuous abundant clean water flushing over 15 minutes is required immediately once skin or eye contamination happens. Store separately from strong oxidants and concentrated acid to avoid chemical decomposition during long-term storage.
