phip 2-amino-1-methyl-6-phenylimidazo4,5-bpyridine molecule. structural chemical formula and molecule model on the dark blue

amine amino atom beef blue bpyridine carbon carcinogen chemical chemistry compound cooked creatine creatinine dark doneness formula heterocyclic hydrogen illustration meat methyl model molecule mutagen nitrogen organic phenylimidazo phenylimidazo4 phip pork pyridine science structural structure vector white