6,7-dihydroxy-3,4-dimethylchromen-2-one

2,2-dimethylpropyl 2-methyl-3-oxobutanoate

4-hydroxy-3-methoxy-5,6-dimethyl-1H-pyridin-2-one

3,4-二甲基-7-(2-氧代丙氧基)-2H-苯并吡喃-2-酮

7-amino-3,4,8-trimethyl-1H-quinolin-2-one