| Primary (First) - walnut |
| FR | | walnut fragrance |
| Secondary (Second) - walnut |
| CS | | maraniol |
| FL/FR | | pentanoic acid, 3-methyl-2-oxo-, ethyl ester |
| | odor: nutty black walnut aroma, accompanied by woody nuances and a subtle herbaceousness |
| | flavor: fresh nutty notes of walnut, dry, woody |
| FR | | saffron pyranone |
| | odor: bitter walnut nutty nut skin acorn saffron citrus herbal hot |
| | flavor: woody old wood nutty |
| Tertiary (Third) - walnut |
| FL/FR | | butyrophenone |
| | odor: camphor cherry walnut hazelnut |
| Quaternary (Fourth) - walnut |
| FL/FR | 2- | acetyl thiophene |
| | odor: sulfurous nutty hazelnut walnut |
| | flavor: onion, malty, roasted |
| FL/FR | | nutty cyclohexenone |
| | odor: Sweet, nutty, phenolic, walnut, fruity, almond and benzoin |
| | flavor: Nutty, musty, phenolic and woody with grain-like nuances |
| FR | | violet nitrile |
| | odor: green violet floral walnut |
| Quinary (Fifth) - walnut |
| FL/FR | | caramel furanone solution |
| | odor: extremely sweet strong caramel maple burnt sugar coffee |
| | flavor: sweet caramellic burnt sugar |
| FL/FR | 2- | heptyl butyrate |
| | odor: fruity green vegetable cheesy walnut |
| | (Z)-2- | octenal |
| | odor: fatty fruity green leaf walnut |
| Senary (Sixth) - walnut |
| FL/FR | 2,3- | dimethyl pyrazine |
| | odor: nutty nut skin cocoa peanut butter coffee walnut caramellic roasted |
| | flavor: nutty nut skin peanut cocoa roasted coffee walnut corn chip bready |
| Septenary (Seventh) - walnut |
| FL/FR | 2- | acetyl pyrrole |
| | odor: musty nut skin maraschino cherry coumarinic licorice walnut bready |
| | flavor: sweet fruity musty cherry nutty wasabi mustard tea |
| FL/FR | ortho- | methyl anisole |
| | odor: sweet nutty floral earthy walnut |
| | flavor: Camphoreous, earthy, woody and salicylate with minty, spicy nuances |
| FL/FR | 2- | phenyl propionaldehyde dimethyl acetal |
| | odor: floral leafy hyacinth green mushroom earthy walnut |
| | flavor: Fruity, green and floral |
| Octonary (Eighth) - walnut |