2-甲氧基-6-甲基-3-硝基吡啶-4-甲醛

(6-Methyl-2,8-dioxo-2,3,4,8-tetrahydro-1H-[1,7]naphthyridin-7-yl)-acetic acid benzyl ester

6-Methyl-1,3,4,7-tetrahydro-[1,7]naphthyridine-2,8-dione

8-Methoxy-6-methyl-3,4-dihydro-1H-[1,7]naphthyridin-2-one

(E)-3-(2-Methoxy-6-methyl-3-nitro-pyridin-4-yl)-acrylic acid methyl ester