| 4-bromo-6-tert-butyl-3-hydroxy-6-methyl-2h-pyran-5(6h)-dione |
| 2-methyl-2-tert-butyl-ketolactone |
| 4-bromo-6-(1,1-dimethylethyl)-3-hydroxy-6-methyl-2h-pyran-5(6h)-dione |
| 4-bromo-6-tert-butyl-3-hydroxy-6-methyl-2h-pyran-2,5(6h)-dione |
| substance 86 |
| 4-bromo-6-tert-butyl-3-hydroxy-6-methyl-2h-pyran-5(6h)-dione |
