| Primary (First) - onion |
| | | allium fistulosum oil |
| | odor: sulfurous onion |
| FL | | allium porrum extract |
| | odor: alliaceous onion |
| | flavor: alliaceous onion |
| FL | | allyl disulfide |
| | odor: Alliceous, onion and garlic-like with metallic nuances |
| | flavor: Green onion and garlic-Iike with meaty nuances |
| FL | | allyl disulfide |
| | odor: Alliceous, onion and garlic-like with metallic nuances |
| | flavor: Green onion and garlic-Iike with meaty nuances |
| | | allyl propanesulfinate |
| | odor: sour pickled onion, drying out to a garlic character |
| | flavor: raw chopped cabbage |
| FL | iso | amyl mercaptan |
| | odor: sulfurous onion green onion garlic |
| | | cyclopentyl propanesulfinate |
| | odor: sweet onion |
| | flavor: sweet taste of steamed onions |
| FL | | diallyl trisulfide |
| | odor: garlic green onion metallic |
| | flavor: sulfurous green onion garlic metallic |
| FL | | diisoamyl disulfide |
| FL | | ethyl 3-(methyl thio)-(E)-2-propenoate |
| FL | | furfuryl methyl sulfide |
| | odor: Onion garlic, sulfuraceous, with a pungent vegetable horseradish nuance |
| | flavor: Sulfuraceous, garlic, eggy with a horseradish mustard nuance |
| FL | 4- | mercapto-2-butanone |
| | odor: sulfurous onion |
| FL | 3- | mercaptohexanal |
| | 2- | mercaptopyrimidine |
| | odor: penetrating sharp green onions |
| | flavor: burning onions |
| FL | 4- | methyl-2-(methyl thiomethyl)-2-hexenal |
| | odor: onion meaty soup |
| | | methyl propanesulfinate |
| | odor: cooked onion with fruity and light sweet aroma backnotes |
| | flavor: sweet onion juice character with a burning sensation |
| FL/FR | | onion oil |
| | odor: obnoxious sulfide onion |
| | flavor: alliaceous onion |
| FL/FR | | onion oil CO2 extract |
| | odor: obnoxious sulfide onion |
| | flavor: onion |
| FL/FR | | onion oil dutch |
| | odor: obnoxious sulfide onion |
| | flavor: onion |
| FL/FR | | onion oil egypt |
| | odor: obnoxious sulfide onion |
| | flavor: onion |
| FL/FR | | onion oil mexico |
| | flavor: onion |
| FL | | onion oleoresin |
| | flavor: onion |
| | | propyl methanesulfinate |
| | odor: green onion, cabbage, with a note of surface-ripened cheese |
| | | propyl propanesulfinate |
| | odor: sweet fresh onion juice |
| | flavor: strong onion |
| FL | | shallot oil |
| | odor: alliaceous sulfurous onion |
| | flavor: Sweet, sulfureous, alliaceous, pungent with a toasted-onion nuance |
| FL/FR | 4- | tropical oxathiane |
| | odor: onion garlic which developed into fruity and sweet notes with exotic characters of lychee fruit and Asian pear |
| | flavor: pineapple milky mango grape citrus bubble gum melon orangeflower cassis alliaceous bacon |
| Secondary (Second) - onion |
| FL | | allyl propyl sulfide |
| | odor: alliaceous green onion garlic |
| FL | | allyl sulfide |
| | odor: Pungent, sulfurous, onion-garlic and horseradish-like with a metallic nuance |
| | flavor: Sulfurous, onion-garlic and vegetative radish-like with a slightly hot nuance |
| FL | | allyl thiopropionate |
| | odor: Fresh onion garlic-like with green gassy nuances |
| | flavor: Fresh onion with a green sweet vegetable nuance |
| FL | iso | amyl mercaptan |
| | odor: sulfurous onion green onion garlic |
| FL | | amyl methyl disulfide |
| FL | | benzyl mercaptan |
| | odor: Sharp, sulfuraceous, onion, garlic, horseradish, mint and coffee |
| | flavor: Leek, horseradish, cabbage, green, tomato and coffee |
| FL | | butyl ethyl disulfide |
| | odor: sulfurous cooked onion garlic |
| | 2- | cyclohexyl-4-methyl-1,3-oxathiane |
| | odor: citrus, onion, herbaceous, dry wood slight tropical, slight onion |
| FL | | cyclopentyl mercaptan |
| | odor: Alliaceous, onion, garlic, horseradish, vegetable-celery, egg, sauteed meat |
| | flavor: Alliaceous, onion, garlic, horseradish, meat, egg, burned, vegetable, celery |
| FL | | dicyclohexyl disulfide |
| | odor: Alliaceous, onion, egg, nut skin, coffee, clam, crab and coffee |
| | flavor: Onion, meaty, clam, crab, coffee and cocoa |
| | 4-(3,3- | dimethyl bicyclo(2.2.1)hept-2-yl)-1,5-dimethyl-2-oxabicyclo(2.2.2)octane |
| | odor: woody and onion |
| | 3,5- | dimethyl-1,2-dithiolane |
| | odor: sulfurous onion cooked onion |
| | flavor: cooked onion cooked vegetable nutty |
| FL/FR | | dimethyl sulfide |
| | odor: sulfury onion sweet corn vegetable cabbage tomato green radish |
| | flavor: Sulfurous, vegetative tomato, corn and asparagus with a dairy creaminess and a slight minty afternote |
| | 1,3- | dithiolane |
| | odor: sweet sulfurous onion |
| | flavor: sweet sulfurous ripe onion |
| FL | | ethyl 3-(furfuryl thio) propionate |
| | odor: Onion, garlic, sulfuraceous, coffee and vegetable notes |
| | flavor: Roasted, nutty, coffee, with graham cracker-like undernotes |
| FL/FR | trans- | galbanum oxathiane |
| | odor: sulfurous green onion garlic tropical |
| FL | | garlic oleoresin |
| | odor: Roasted, onion, garlic, with sulfury savory HVP-like nuances |
| | flavor: Burnt, roasted, sauteed, onion and garlic |
| FL | | heptyl mercaptan |
| | odor: sulfurous onion |
| FL | 3- | mercapto-2-butanone |
| | odor: sulfurous onion roasted gassy meaty |
| | flavor: Roasted meat, sulfurous and alliaceous with nuances of cabbage, coffee and pot roast with fatty drippings |
| FL | 4- | mercapto-3-methyl-2-butanol |
| | odor: sulfurous onion savory meaty fruity |
| FL | 3- | mercapto-2-methyl pentanol |
| | odor: sulfurous onion |
| | flavor: alliaceous brothy burnt cooked meaty metallic roasted sulfurous |
| | 2- | mercaptopyrimidine |
| | odor: penetrating sharp green onions |
| | flavor: burning onions |
| FL | | methionol |
| | odor: SuIfureous and onion-like with a sweet, savory, soupy-cooked vegetable nuance |
| | flavor: Onion- and garlic-like, with a savory bouillion-like note |
| FL/FR | 2- | methyl 5-(methyl thio) furan |
| | odor: Sulfureous, onion, garlic, coffee and mustard-like with pungent horseradish and peppery nuances |
| | flavor: Musty, mustard, onion, garlic, mushroom, coffee and savory nuances |
| FL | | methyl propyl trisulfide |
| | odor: Sulfureous, onion, garlic, green, metallic and clean with a cooked scallion nuance |
| | flavor: Onion, garlic, fresh and metallic with a cheese nuance |
| | | methyl thiocyanate |
| FL/FR | 2-( | methyl thio) phenol |
| | odor: meaty onion garlic sulfurous eggy |
| | flavor: meaty |
| FL | 1,1- | propane dithiol |
| | odor: sulfurous cooked onion savory |
| FL | | propenyl propyl disulfide |
| | odor: sulfurous cooked onion |
| FL | iso | propyl disulfide |
| | odor: alliaceous onion meaty sulfurous cabbage |
| FL | iso | propyl mercaptan |
| | odor: strong ripe onion gassy meaty sulfurous |
| | flavor: Soft-boiled egg yolk, hydrogen sulfide, rich mouth feel, strong poultry, leek and onion-like |
| FL | | propyl thioacetate |
| | odor: Sulfureous green onion, garlic, scallion, green fresh, vegetative |
| | flavor: Onion, garlic sulfureous, alliaceous with a fresh green nuance |
| FL | 2,4,6- | trimethyl-1,3,5-trithiane |
| | odor: sulfurous green onion |
| FL | 2,3,5- | trithiahexane |
| | odor: strong sulfurous onion |
| Tertiary (Third) - onion |
| FL | | allyl propyl disulfide |
| | odor: alliaceous garlic green onion |
| FL | | diallyl polysulfides |
| | odor: garlic onion |
| | flavor: sulfurous |
| FL | | diallyl tetrasulfide |
| | odor: strong garlic onion |
| | flavor: sulfurous |
| FL | | diallyl trisulfide |
| | odor: garlic green onion metallic |
| | flavor: sulfurous green onion garlic metallic |
| FL | | diethyl disulfide |
| | odor: gassy ripe onion greasy garlic |
| | flavor: gassy onion |
| FL | | diethyl trisulfide |
| | odor: sulfurous garlic onion |
| FL/FR | | dimethyl trisulfide |
| | odor: Sulfureous, alliaceous, cooked, savory, meaty, eggy and vegetative with a fresh, green, onion topnote |
| | flavor: Sulfureous, alliaceous, gassy, savory and meaty with a fresh, vegetative nuance |
| FL/FR | | dipropyl disulfide |
| | odor: Sulfureous, alliaceous, fresh, green onion, scallion and metallic with a slight tropical nuance |
| | flavor: Alliaceous, sulfureous, green, vegetative and asafetida nuances |
| FL | | dipropyl sulfide |
| FL | | dipropyl trisulfide |
| | odor: Sulfureous, alliaceous, pungent, green and onion-like with slight tropical and vegetative nuances |
| | flavor: Alliaceous, sulfureous, green and garlic-like with a tin-like metallic undernote and with minty and tropical nuances |
| | 1,3- | dithiolane |
| | odor: sweet sulfurous onion |
| | flavor: sweet sulfurous ripe onion |
| FL/FR | | ethyl 2-mercaptopropionate |
| | odor: sulfury meaty green onion |
| | flavor: onion cooked garlic |
| FL | | ethyl methyl trisulfide |
| | odor: alliaceous garlic green onion |
| FL | | ethyl propyl disulfide |
| | odor: alliaceous garlic green onion |
| FL | S- | ethyl thioacetate |
| | odor: Sulfuraceous, fruity, onion / garlic with meaty nuances |
| | flavor: Sulfuraceous, onion / garlic with a sweet fruity aftertaste |
| FL/FR | | ferula assa-foetida absolute |
| | odor: garlic onion sweet balsam |
| | flavor: asafetida sulfurous |
| FL | | furfuryl thiopropionate |
| | odor: Sulfureous, coffee-like, onion and garlic, with a sauteed savory nuance |
| | flavor: Sulfureous, coffee, onion and garlic-like with meaty savory roast nuances |
| FL | | leek oil |
| | odor: sulfurous alliaceous onion |
| | flavor: sulfurous alliaceous leek |
| FL | | methyl butyl sulfide |
| | odor: sulfurous garlic onion vegetable |
| FL/FR | O- | methyl S-1-methoxyhexan-3-yl carbonothioate |
| | odor: sulfurous mushroom onion green fatty fruity mango passion fruit blackcurrant |
| | flavor: fresh dark roasted |
| FL | | methyl 2-(methyl thio) butyrate |
| | odor: sulfurous musty onion fruity tropical green |
| | flavor: sulfury savory eggy vegetable onion fruity tropical |
| | 4- | methyl-2-[2-(methyl thio)ethyl]-1,3-oxathiane |
| | odor: powerful garlic, animalic, onion, green, herbaceous potato, raw, vegetable |
| FL | 2- | methyl thioacetaldehyde |
| | odor: Sulfureous, vegatative, onion, garlic, mustard and nutty with a potato nuance |
| | flavor: Alliaceous and vegetative with a good mouthfeel and onion and garlic-like with a potato and bready nuance |
| FL | | methyl thiomethyl butyrate |
| | odor: Sulfureous, musty, onion, savory, fruity and tropical with vegetative nuances |
| | flavor: Sulfureous, savory, eggy, vegetative and onion with fruity, tropical nuances |
| FL | 2- | methyl thiophene |
| | odor: sulfurous alliaceous onion roasted green |
| | flavor: sulfurous roasted green cabbage onion bitter |
| FL | ortho- | thiocresol |
| | odor: Meaty,sulfuraceous, onion, garlic, egg, chemical, rubber, naphthyl and musty |
| | flavor: Meaty, onion, garlic, chemical and metallic |
| FL | 2,4,6- | triethyl tetrahydro-1,3,5-dithiazine |
| | odor: alliaceous roasted fried onion leek fatty scallion |
| | flavor: savory meaty |
| Quaternary (Fourth) - onion |
| FL | | allyl mercaptan |
| | odor: Sulfurous and alliaceous, sauteed onion and garlic, roasted, grilled and charred meaty nuances |
| | flavor: Alliaceous onion, garlic and leek. It has meaty bouillon savory nuances |
| FL | | allyl methyl disulfide |
| | odor: alliaceous garlic green onion |
| FL | | allyl methyl sulfide |
| | odor: alliaceous garlic onion |
| | flavor: sulfurous alliaceous onion savory |
| FL | | allyl propyl trisulfide |
| | odor: sulfurous alliaceous garlic onion |
| FL | | butyl mercaptan |
| | odor: Sulfureous, fatty, stewed beef, sauteed onion, egg, coffee and garlic |
| | flavor: Sulfureous, vegetative, savory meaty, garlic and onion |
| FL/FR | | dimethyl disulfide |
| | odor: sulfurous vegetable cabbage onion |
| | flavor: sulfurous cabbage, malt, cream |
| FL | (Z+E)-2,5- | dimethyl-3-tetrahydrofuran thiol |
| | odor: sulfury roasted meat onion |
| FL | (Z+E)-2,5- | dimethyl-3-thioacetoxytetrahydrofuran |
| | odor: sulfury roasted meat onion |
| FL | | ethyl propyl trisulfide |
| | odor: alliaceous garlic green onion |
| FL/FR | | ferula assa-foetida gum oil |
| | odor: Sulfureous, alliaceous, savory, green onion and resinous with a vegetative note |
| | flavor: Alliaceous, sulfureous, savory, metallic, woody, green and pungent |
| FL | 2- | heptane thiol |
| | odor: pungent sulfurous sweaty skunky onion vegetable |
| FL | 3- | mercapto-3-methyl butyl formate |
| | odor: sulfurous catty caramelised onion; roast coffee, roast meat, with a tropical nuance on dilution |
| | (R)- | mercapto-3-methyl hexan-1-ol |
| | odor: grapefruit passion fruit blackcurrant onion |
| FL | bis(1- | mercaptopropyl) sulfide |
| | odor: alliaceous fruity garlic green onion |
| FL | bis(2- | methyl-3-furyl) disulfide |
| | odor: Sulfurous, strong roasted meaty with a note reminiscent of sulfurol, savory, au jus and chicken nuances |
| | flavor: Strong meaty, sulfurous, brothy with a hint of thiamin, roasted savory, with nuances of cooked onion, sauteed garlic and black pepper |
| FL | | methyl 2-methyl-3-furyl disulfide |
| | odor: Sulfureous, meaty, vegetative and chemical-like with onion and roasted beef nuances |
| | flavor: SuIfureous, meaty, vegetative, brothy and savory with a metallic nuance |
| FL | | methyl 2-thiofuroate |
| | odor: milky creamy fried cooked onion |
| | flavor: cabbage |
| FL | | prenyl mercaptan |
| | odor: sulfurous smoke leek onion skunky |
| FL/FR | | propyl mercaptan |
| | odor: cabbage natural gas sweet onion |
| | flavor: alliaceous fresh meaty onion sulfurous |
| Quinary (Fifth) - onion |
| FL | | allyl methyl trisulfide |
| | odor: alliaceous creamy garlic onion |
| FL | 1,3- | butane dithiol |
| | odor: Garlic, meaty sulfurous, roasted garlic and onion, spicy, with nutty nuances |
| | flavor: Garlic, mushroom, bloody metallic, roasted burnt rubber nuances, HVP and meaty, garlic |
| FL | 1,4- | dithiane |
| | odor: Seafood-like, solvent, garlic and onion, pyridine like |
| | flavor: Seafood-like, clam and oyster fermented garlic and onion, mushroom and turkey |
| FL/FR | | ethyl vinyl ketone |
| | odor: Pungent, etherial, lifting, peppery, garlic, mustard and onion |
| | flavor: Pungent, etherial, peppery, garlic, onion, fishy and mustard with a hot nuance |
| FL | (R,S)-2- | mercapto-3-butanol |
| | odor: SuIfureous, roasted meat, alliaceous, sauteed onion and garlic |
| | flavor: Meaty, savory, sauteed onion and garlic |
| FL/FR | | methyl furfuryl disulfide |
| | odor: Roasted coffee, sulfurous cooked meat and liver, onion and garlic nuances. Slight eggy undertones |
| | flavor: Roasted coffee, toasted onion and garlic, with roasted beef and fried pork nuances |
| FL | | methyl 4-(methyl thio) butyrate |
| | odor: sulfury cabbage fruity pineapple cheese |
| | flavor: sulfurous garlic green onion chive green cheesy |
| FL | 2-( | methyl thio) methyl-2-butenal |
| | odor: burnt matches cooked cabbage roasted onion |
| FL | | peanut dithiazine |
| | odor: peanut meaty cocoa |
| Senary (Sixth) - onion |
| FL | alpha- | benzylidene methional |
| | odor: vegetative sauerkraut, kimchi, cabbage, soy beans, green onion nuances |
| | flavor: Vegetative sauerkraut, kimchi, cabbage, soy beans, green onion nuances |
| FL/FR | | coffee difuran |
| | odor: Sulfurous, coffee, furfuryl mercaptan, roasted, meaty, onion and cabbage, potato |
| | flavor: Sulfurous, coffee, roasted meaty, onion |
| FL | | methyl benzyl disulfide |
| | odor: Sulfureous cabbage-like, vegetative with a green metallic nuance |
| | flavor: Sulfureous, vegetative, metallic, green, with an onion nuance |
| Septenary (Seventh) - onion |
| FL | 2- | acetyl-2-thiazoline |
| | odor: corn chip taco potato chip toasted bread nutty |
| | flavor: Taco chips, slightly popcorn, toasted and roasted grain, salty impression |
| FL/FR | cis- | galbanum oxathiane |
| | odor: sulfurous green galbanum fruity tropical pineapple |
| | flavor: green nasturtium chrysanthemum galbanum earthy lettuce tropical cabbage |
| FL/FR | | meaty dithiane |
| | odor: pork lamb chicken savory bouillon onion |
| | flavor: meaty pork |
| FL/FR | | methyl 3-(methyl thio) propionate |
| | odor: Sulfureous, vegetative, pungent, rooty, tomato, horseradish, onion and garlic |
| | flavor: alliaceous fruity garlic green mango papaya pineapple horseradish |
| FR | 1,3- | oxathiane, 2-ethyl-4,4-dimethyl- |
| | odor: herbal sage tagette cassis minty sulfury onion |
| Octonary (Eighth) - onion |
| FL/FR | | dimethyl trisulfide |
| | odor: Sulfureous, alliaceous, cooked, savory, meaty, eggy and vegetative with a fresh, green, onion topnote |
| | flavor: Sulfureous, alliaceous, gassy, savory and meaty with a fresh, vegetative nuance |