2,3,5,6-四甲基四氢吡喃-4-酮

3-ethylpentanamide

1,1,1-三氟-3-甲基己烷-2,4-二酮

3,3'-dimethyl-8,8'-dinitro-2,2'-spirobi[chromene]

2,4-diiodopentan-3-one