The crystal structure of pirfenidone, [5-methyl-1-phenylpyridin-2(1H)-one], an active pharmaceutical ingredient (API) approved in Europe and Japan for the treatment of idiopathic pulmonary fibrosis (IPF), is reported here for the first… Click to show full abstract
The crystal structure of pirfenidone, [5-methyl-1-phenylpyridin-2(1H)-one], an active pharmaceutical ingredient (API) approved in Europe and Japan for the treatment of idiopathic pulmonary fibrosis (IPF), is reported here for the first time. It was crystallized from toluene by the temperature gradient technique, and crystallizes in the chiral monoclinic space group P21.
               
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