Pirfenidone
C12H11NO
185.23
2(1H)-Pyridinone, 5-methyl-1-phenyl-;
5-Methyl-1-phenyl-2(1H)-pyridone [53179-13-8]
2(1H)-Pyridinone, 5-methyl-1-phenyl-;
5-Methyl-1-phenyl-2(1H)-pyridone [53179-13-8]
DEFINITION
Pirfenidone contains NLT 98.0% and NMT 102.0% of pirfenidone (C12H11NO), calculated on the dried basis.
USP REFERENCE STANDARDS FOR PURCHASE
USP Pirfenidone RSUSP Pirfenidone Related Compound A RS
USP Pirfenidone Related Compound B RS