6-methyl-4,5-dihydrofuro<3,2-c>pyridin-4-one
2-methyl-3t-(5-nitro-[2]furyl)-acrylic acid p-anisidide
2-methyl-3t-(5-nitro-[2]furyl)-acrylic acid-(4-bromo-anilide)
2-methyl-3t-(5-nitro-[2]furyl)-acrylic acid-(4-chloro-anilide)
2-methyl-3t-(5-nitro-[2]furyl)-acrylic acid-(4-hydroxy-anilide)