| 426 / | HD | FOOD OR EDIBLE MATERIAL: PROCESSES, COMPOSITIONS, AND PRODUCTS |
| 531 | DF | PRODUCTS PER SE, OR PROCESSES OF PREPARING OR TREATING COMPOSITIONS INVOLVING CHEMICAL REACTION BY ADDITION, COMBINING DIVERSE FOOD MATERIAL, OR PERMANENT ADDITIVE {29} |
| 534 | DF | .~ Flavor per se, or containing flavor or flavor improver of identifiable organic chemical constitution {3} |
| 536 | DF | .~.~ Heterocyclic {1} |
| 537 | | .~.~.~ Hetero-N-atom |