s-methylmethionine molecule, structural chemical formula, ball-and-stick model, image vitamin u

smethylmethionine vitamin derivative methionine molecule molecular structure chemical formula isolated model c6h14no2s atom chemistry biochemistry compound science complex biology metabolism supplement nutrient nature research health skeletal acid carbon disease experiment laboratory medical medicine atomic drug structural substance element illustration protein antioxidant cabbage deficiency symbol organic biomolecule enzyme s-methylmethionine ball- -stick image ball- -stick