title: In vivo formation of 4-formylaminoantipyrine as a new metabolite of aminopyrine. I.
mesh_terms: D000632:Aminopyrine / Q000031:analogs & derivatives* / Q000378:metabolism; D000818:Animals; D001711:Biotransformation; D006168:Guinea Pigs; D006801:Humans; D011817:Rabbits; D051381:Rats
chemical_list: D000632:Aminopyrine