| Primary (First) - rubbery |
| FL/FR | (2R,5S)- | buchu mercaptan |
| | odor: rubber-like |
| | 4- | mercapto-2-methyl-4,5-dihydrothiophene |
| FL | 2- | thienyl disulfide |
| | odor: rubbery earthy mushroom |
| | flavor: earthy meaty |
| Secondary (Second) - rubbery |
| FL | | acetaldehyde diethyl mercaptal |
| | odor: burnt rubbery alliaceous |
| FL/FR | | benzothiazole |
| | odor: Sulfureous, rubbery, vegetative, cooked, brown, nutty, coffee-like and meaty |
| | flavor: Meaty, vegetative, brown, cooked, beefy and coffee-like |
| FL | | lactadione |
| | odor: rubbery earthy plastic |
| | flavor: straw fruity |
| FL | 2- | naphthyl mercaptan |
| | odor: sulfurous rubbery meaty roasted woody creamy artichoke |
| | flavor: Sulfureous, meaty, brown, roasted, chicken, eggy with a slight nutty nuance |
| FL | 2- | phenethyl mercaptan |
| | odor: rubber sulfurous |
| Tertiary (Third) - rubbery |
| | 3-(3-tert- | butyl phenyl) propanal |
| | odor: aldehydic, floral, rubber |
| CS | | phenol |
| | odor: phenolic plastic rubber |
| Quaternary (Fourth) - rubbery |
| FL | | phenyl mercaptan |
| | odor: Meaty, phenolic, sulfuraceous, with a rubbery allicious backnote |
| | flavor: Meaty, phenolic, with a burnt rubber sulfureous nuance |
| CS | | quinoline |
| | odor: Medical, musty, tobacco with a pyridine and leather nuance |
| | flavor: Earthy, musty, nutty, coumarinic with a chemical nuance |
| Quinary (Fifth) - rubbery |
| FL | | tyramine |
| | odor: mild meaty dirty cooked phenolic rubbery |
| | flavor: mild sweet vegetative phenolic |
| Senary (Sixth) - rubbery |
| FL/FR | | dibutyl sulfide |
| | odor: green grassy violet-leaf herbal rose geranium |
| | flavor: Green, vegetative, onion garlic, horseradish, savory |
| FL | 3- | methyl-2-butane thiol |
| | odor: sulfurous, savory burnt rubber, roasted chicken and pork meaty with nuances of roasted coffee, cultured cheeses and roasted cashew nuts. |
| | flavor: sulfurous, savory fried meaty, fried fatty with coffee and cooked onion nuances with a slight tongue bite |
| FL | ortho- | thiocresol |
| | odor: Meaty,sulfuraceous, onion, garlic, egg, chemical, rubber, naphthyl and musty |
| | flavor: Meaty, onion, garlic, chemical and metallic |
| Septenary (Seventh) - rubbery |
| FL/FR | 2-iso | propyl phenol |
| | odor: solvent like, phenolic, smoky with toasted woody and burnt rubber nuances |
| | flavor: solvent like, shoe polish, woody smoky, aged scotch and whiskey like with tar and burnt rubber nuances |
| Octonary (Eighth) - rubbery |