1,4-二甲基萘

4,7-二甲基-2-苯并呋喃-1,3-二酮

2,2-diethyl-4,7-dimethyl-indan-1,3-dione

2,2-diethyl-cyclopenta[a]naphthalene-1,3-dione

2,2-diethyl-4-isopropyl-7-methyl-indan-1,3-dione