methyl trans-1-(aminocarbonyl)octahydro-7,9-dioxo-2H-pyrazino[1,2-a]pyrazine-2-acetate

(12aR,12bS)-4,6,7,9,12a,12b-hexahydrodipyrazino[1,5-d:1',5'-f]pyrazine-1,3,10,12-tetrone

methyl 2-(2-methyl-1,3-benzothiazol-3-ium-3-yl)acetate,bromide

methyl 3-hydroxy-3-methylhexanoate

methyl 2-[6-(2-fluorophenyl)pyridin-3-yl]oxyacetate