|
|
5-Hydroxy-6-benzoyl-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:3,4-b']dipyran |
5-Hydroxy-6-benzoyl-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:3,4-b']dipyran |
|
|
5-Hydroxy-2,8,8-trimethyl-4H,8H-benzo[1,2-b:3,4-b']dipyran-4-one |
5-Hydroxy-2,8,8-trimethyl-4H,8H-benzo[1,2-b:3,4-b']dipyran-4-one |
|
|
|