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| Primary (First) - hazelnut |
| FL/FR | 2- | acetyl-3,5-dimethyl pyrazine |
| | odor: nutty roasted hazelnut |
| | flavor: nutty roasted hazelnut |
| FL | 3- | acetyl-2,5-dimethyl thiophene |
| | odor: burnt roasted meaty |
| | flavor: sweet dried hazelnut almond marzipan |
| FL | 2,5- | diethyl-3-methyl pyrazine |
| | odor: toasted hazelnut meaty |
| | flavor: hazelnut burnt |
| FL | 2,5- | diethyl-3-methyl pyrazine |
| | odor: toasted hazelnut meaty |
| | flavor: hazelnut burnt |
| FL/FR | | filbert heptenone |
| | odor: raw nut skin myrcene ketonic sweet hazelnut filbert |
| | flavor: Nutty, roasted, coffee, cocoa, brown with an earthy brown and meaty nuance |
| FL/FR | | filbert heptenone B |
| | odor: nutty hazelnut |
| | flavor: nutty |
| FL/FR | (-)-(E,R)- | filbertone |
| | odor: hazelnut soft butter chocolate metallic |
| | flavor: hazelnut |
| FL/FR | (+)-(E,S)- | filbertone |
| | odor: hazelnut metallic fatty pyidine |
| | flavor: hazelnut |
| FL/FR | (E)- | filbertone |
| | odor: hazelnut nutty |
| FL/FR | european | hazelnut absolute |
| | odor: hazelnut |
| | flavor: hazelnut |
| FR | | hazelnut cream fragrance |
| FR | | hazelnut fragrance |
| FL/FR | roasted | hazelnut infusions |
| | odor: nutty hazelnut |
| | flavor: nutty hazelnut |
| FL/FR | roasted | hazelnut infusions |
| | odor: nutty hazelnut |
| | flavor: nutty hazelnut |
| FL/FR | european | hazelnut oil CO2 extract |
| FL | european | hazelnut oleoresin |
| | flavor: nutty hazelnut |
| FL | 2- | methoxy-6-methyl pyrazine |
| | odor: roasted hazelnut almond peanut |
| FL | | methyl ethoxypyrazine |
| | odor: nutty hazelnut nut skin almond earthy brown pineapple |
| | flavor: nutty nut skin hazelnut earthy roasted almond roasted barley taco |
| FL/FR | 2- | methyl-3-ethoxypyrazine |
| | odor: hazelnut roasted almonds pineapple earthy |
| FL | 2- | propyl-3,5-dimethyl pyrazine |
| | odor: hazelnut burnt |
| | 2- | propyl-3,6-dimethyl pyrazine |
| | odor: hazelnut |
| | flavor: hazelnut |
|
| Secondary (Second) - hazelnut |
| FL/FR | 2- | acetyl-3,5(or 6)-dimethyl pyrazine |
| | odor: nutty roasted hazelnut roasted peanut popcorn corn chip toasted grain nut flesh peanut butter |
| | flavor: nutty roasted hazelnut roasted peanut popcorn toasted grain nut flesh peanut butter |
| FR | | chocolate hazelnut fragrance |
| FL | | chocolate pyrazine B |
| | odor: nutty roasted hazelnut barly |
| FL | 4,5- | dimethyl-2-ethyl thiazole |
| | odor: burnt hazelnut cocoa |
| FR | | filbert fragrance |
| FR | | hazelnut coffee fragrance |
| FL | | methyl ethoxypyrazine |
| | odor: nutty hazelnut nut skin almond earthy brown pineapple |
| | flavor: nutty nut skin hazelnut earthy roasted almond roasted barley taco |
| FL/FR | 2- | methyl-3-pentenoic acid |
| | odor: cranberry hazelnut nutty |
| FR | | vanilla hazelnut fragrance |
|
| Tertiary (Third) - hazelnut |
| FL/FR | 2- | acetyl-3,6-dimethyl pyrazine |
| | odor: popcorn roasted hazelnut caramellic |
| FL/FR | 2- | acetyl-3,5-dimethyl pyrazine |
| | odor: nutty roasted hazelnut |
| | flavor: nutty roasted hazelnut |
| FL/FR | 2- | acetyl-3-methyl pyrazine |
| | odor: nutty nut flesh roasted hazelnut toasted grain corn chip vegetable nut skin caramellic |
| | flavor: nutty nut flesh roasted hazelnut toasted grain potato chip baked potato nut skin vegetable |
| FL/FR | 2- | acetyl thiophene |
| | odor: sulfurous nutty hazelnut walnut |
| | flavor: onion, malty, roasted |
| FL/FR | 2-iso | butyl-3,5-(and 3,6)-dimethyl pyrazine |
| | odor: cocoa hazelnut musty earthy roasted nutty |
| FL | 3,5(6)- | cocoa pyrazine |
| | odor: nutty nut skin hazelnut peanut chocolate roasted |
| | flavor: Peanut, nut skin, brown, roasted, hazelnut, with coffee and chocolate nuances |
| FL | 2,5- | dimethyl-4-ethyl oxazole |
| | odor: burnt roasted |
| | flavor: green ethereal hazelnut |
| FL | 2- | ethyl-5(or6)-methyl pyrazine |
| | odor: nutty roasted coffee hazelnut cocoa roasted barley |
| FL/FR | 2- | methoxy-3-methyl pyrazine |
| | odor: roasted almond hazelnut peanut |
| | flavor: nutty green |
| FL/FR | | nonyl isovalerate |
| | odor: fruity apple hazelnut citrus |
| FL | | thialdine |
| | odor: sulfurous nutty hazelnut corn meaty earthy clam |
| | flavor: sulfurous green onion radish garlic cooked onion earthy brothy |
|
| Quaternary (Fourth) - hazelnut |
| FL/FR | | butyrophenone |
| | odor: camphor cherry walnut hazelnut |
| FL/FR | | hazelnut pyrazine |
| | odor: musty nut skin earthy roasted hazelnut toasted potato dusty foliage vegetable |
| | flavor: musty nutty toasted cocoa hazelnut potato potato chip earthy dirty |
| FL/FR | 2- | methyl thio-3,5 or 6-methyl pyrazine |
| | odor: Toasted popcorn, roasted almond, hazelnut, peanut and cashew nutty, with a caramellic and corn-chip nuance |
| | flavor: Peanut and pecan nutty, popcorn and corn-chip-like with a burnt musty nuance |
| FL | 2- | pentyl thiophene |
| | odor: fatty chicken coup cranberry roasted hazelnut corn roasted barley fermented meaty bloody |
| | flavor: fatty chicken coup tropical nut flesh roasted barley fruity fermented minty |
| FL | 2- | propyl pyrazine |
| | odor: green vegetable nutty |
| | flavor: green burnt |
| FL | | pyrazine |
| | odor: pungent sweet corn like roasted hazelnut barly |
| FL | 2- | thienyl disulfide |
| | odor: rubbery earthy mushroom |
| | flavor: earthy meaty |
|
| Quinary (Fifth) - hazelnut |
| FL/FR | | chocolate pyrazine A |
| | odor: chocolate cocoa roasted almond hazelnut peanut nutty |
| FL | 3- | mercapto-2-pentanone |
| | odor: Intense sulfurous, alliaceous and catty. It has nutty hazelnut note with savory roasted meaty nuances. It has faint nuances of tropical fruits and grapefruit |
| | flavor: Intense alliaceous, sulfurous, onion with full bodied savory notes of roasted meat |
| FL/FR | | methoxymethyl pyrazine |
| | odor: nutty fresh roasted peanut nut skin green hazelnut |
| | flavor: nutty nut skin hazelnut roasted earthy almond peanut |
| FL/FR | 2,4,5- | trimethyl thiazole |
| | odor: musty nutty vegetable cocoa hazelnut chocolate coffee |
| | flavor: Nutty, cocoa and green vegetative-like with roasted earthy nuances |
|
| Senary (Sixth) - hazelnut |
| FL/FR | 2- | acetyl pyrazine |
| | odor: popcorn nutty corn chip bread crust chocolate hazelnut coffee |
| | flavor: Roasted, nutty, bready and yeasty, with popcorn and corn chip nuances |
| FL/FR | 2- | acetyl thiazole |
| | odor: nutty popcorn roasted peanuts hazelnut |
| | flavor: Corn chip with a slight musty background |
|
| Septenary (Seventh) - hazelnut |
| FL/FR | 5- | methyl quinoxaline |
| | odor: Nut shell, musty, roasted and pyrazine-like with coffee, hazelnut and potato nuances |
| | flavor: Nutty, roasted, peanut and pyrazine-like with a yeasty corn chip nuance |
| FL/FR | 2,3,5- | trimethyl pyrazine |
| | odor: nutty nut skin earthy powdery cocoa baked potato roasted peanut hazelnut musty |
| | flavor: raw nut skin vegetable cocoa toasted earthy chocolate coffee |
|
| Octonary (Eighth) - hazelnut |