3-acetyl-6-methyloxane-2,4-dione

6-methyl-3-[C-methyl-N-(4-methylphenyl)carbonimidoyl]pyran-2,4-dione

2,6-dimethyl-4-oxopyran-3-carboxylic acid

6-甲基十三烷

ethyl 2-cyano-2-(2,6-dimethylpyran-4-ylidene)acetate