Odors

Odors are emotive, irrefutably powerful, deceptive in nature, contribute to our emotional behaviour, influence our mood and thoughts, virtually transport us to various locations and times in our memories. Odors are too complex, do not appear to be sufficiently ‘real' since they do not exist in the absence of a perceiving substance. The odors are encoded in the structural moiety of chemicals. When a substance releases chemical into the air, it gives off a distinct odor. Odors are too complex and have an insubstantial nature, a complex molecular basis, and are perceived individually. A molecule can have more than one odor associated with it.

OlfactionBase houses 106 primary odors, which are further classified into 572 subodors based on nine known aroma-classification systems (Wine, Perfumes, Urban odor, Drinking water, Waste water, Compost, Fragrance, City smell, Human Perception).

You may download full odorant dataset or search for specific odor.
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Primary Odor
Sub-Odor
Sr.No. Primary Odor Sub Odor CAS-ID’s Chemical Name
251 Alliaceous Onion 227456-28-2 3-Mercapto-2-methylpentanal
252 Alliaceous Onion 51755-72-7 3-Mercaptohexanal
253 Alliaceous Onion 51647-38-2 3-Methyl-1,2,4-trithiolane
254 Alliaceous Onion 54717-17-8 2,4,6-Triethyl-1,3,5-dithiazinane
255 Alliaceous Onion 94278-27-0 Ethyl 3-(furfurylthio)propionate
256 Alliaceous Onion 51534-66-8 Methyl 2-(methylthio)butyrate
257 Alliaceous Onion 1450-85-7 2-Mercaptopyrimidine
258 Alliaceous Onion 136954-25-1 3-(Acetylmercapto)hexyl acetate
259 Alliaceous Onion 74758-93-3 Methylthiomethyl butyrate
260 Alliaceous Onion 17619-36-2 Methyl propyl trisulfide
261 Alliaceous Onion 32951-19-2 1-Butene, 1-(methylthio)-, (E)-
262 Alliaceous Onion 71159-90-5 1-p-Menthene-8-thiol
263 Alliaceous Onion 88497-17-0 1,1-Propanedithiol
264 Alliaceous Onion 227456-27-1 3-Mercapto-2-methylpentan-1-ol
265 Alliaceous Onion 59324-17-3 trans-2-Methyl-4-propyl-1,3-oxathiane
266 Alliaceous Onion 26548-78-7 (2S,3R)-2-Methyltetrahydrofuran-3-thiol
267 Alliaceous Onion 828300-39-6 1-Hexanol, 3-mercapto-3-methyl-, (3R)-
268 Alliaceous Onion 23328-62-3 (Methylthio)acetaldehyde
269 Alliaceous Onion 37887-04-0 (R*,S*)-3-Mercaptobutan-2-ol
270 Alliaceous Onion 33959-27-2 4-Mercapto-3-methyl-2-butanol
271 Alliaceous Onion 65887-08-3 2-(Methylthiomethyl)-3-phenylpropenal
272 Alliaceous Onion 53897-60-2 1-(1-Sulfanylpropylsulfanyl)propane-1-thiol
273 Alliaceous Onion 444880-09-5 1,3-Oxathiane, 2-ethyl-4,4-dimethyl-
274 Alliaceous Onion 61675-72-7 3-(Methylthio)methylthiophene
275 Alliaceous Onion 26486-21-5 2,5-Dimethyltetrahydrofuran-3-thiol
Showing 251 to 275 of total 281 entries