SMILES:
CCCC(=O)[O-]

Aroma Description:
sharp, acetic, cheesy, buttery, fruity, dairy, creamy1

Receptor Expression log10 EC50 Adj. Top Antagonist? Correlated Perceptual Qualities
OR51E1 100 -2.3 5, -5.47 8, -4.27 9 -  cheesy, sour, sweaty, sharp, acidic, dairy
OR1G1 61 - 0.6091 3, (agonist) 13  sweet, waxy, citrus, tart, orange, fresh, aldehydic, rose, floral, fatty
OR1A1 73 - -1.2667 5, (agonist) 13   
OR51E2 96 -4.52 7, -2.5 11 2.6087 7, 2.5 10, 0.7 11  sour, vinegar, sharp, cheesy
OR51I2 100 -3.61 12 0.4167 10, 6.1 12  cheesy, sour, sweaty, sharp, dairy, milky
OR52E1 ? -4.43 12 1.25 12  (insufficient data)
OR4F21 100 -4.69 2 0.4808 2  sharp, dairy, buttery, solvent, creamy
OR52H1 100 - 4.5833 10  dairy, creamy, buttery, sharp, cheesy, milky
OR51D1 65 -4.13 2 0.1821 2, 0 10  dairy, cheesy, sharp, milky, creamy, lactonic
OR5D14 50 -4.09 2 0.1761 2  (insufficient data)
OR10A6 100 -4.1 2 0.1104 2  peach, sweet, coconut, lactonic, floral, cyclamen, waxy, neroli, dairy, honey
OR7G2 80 -3.88 2 0.1301 2  (insufficient data)
OR2T1 69 -3.81 2 0.131 2  alliaceous, green_onion, sulfurous, garlic, onion, eggy, cabbage
OR52K2 80 - 2.9167 10  dairy, milky, lactonic, peach, creamy, coconut
OR52D1 100 - 2.8934 3, 0 10  dairy, cheesy, anise, milky, creamy, sour, sharp, peach, rancid, lactonic
OR52K1 92 - 2.5 10  dairy, milky, lactonic, peach, creamy, coconut
OR52L1 96 - 2.5 10  milky, dairy, lactonic, peach, creamy, coconut
OR56A4 100 - 0 5, 2.0833 10  cloth, laundered, cheesy, orange_peel, waxy, dairy, fatty, aldehydic
OR52A1 88 - 2.0833 10  dairy, milky, peely, lactonic, peach, orange_peel, creamy, fatty
OR52E4 88 - 2.0833 10  dairy, milky, creamy, lactonic, peach, sharp, cheesy
OR51B6 ? - 1.6667 10  dairy, milky, lactonic, creamy, peach, cheesy, coconut, sharp
OR51M1 100 - 1.6667 10  dairy, cheesy, milky, sharp, creamy, lactonic, peach
OR56A3 96 - 1.6667 10  cheesy, dairy, buttery, clove, sharp, creamy
OR56B1 100 - 1.6667 10  dairy, creamy, buttery, milky, lactonic, peach, sharp
OR56B4 96 - 1.6667 10  dairy, milky, lactonic, peach, creamy, coconut
OR52N5 92 - 1.25 10  dairy, milky, lactonic, peach, creamy, coconut
OR51S1 38 - 0.8333 10  dairy, milky, lactonic, peach, creamy, cheesy, coconut
OR52W1 100 - 0.5833 10  buttery, creamy, dairy, pungent, cheesy, caramellic
OR51Q1 100 - 0.4167 10  dairy, milky, cheesy, sharp, lactonic, peach, creamy
OR51T1 76 - 0.4167 10  spearmint, dairy, caraway, orangeflower, sharp, neroli, milky, creamy, blueberry, minty
OR52I2 100 - 0.4167 10  dairy, milky, balsamic, lactonic, oily, peach, creamy, coconut, clean, herbal
OR7D4 96 - 0.2 6  animal, citrus, orange, peely, tart, aldehydic
OR10G3 96 - 0 5   
OR10G7 80 - 0 5   
OR10J5 84 - 0 5   
OR11A1 100 - 0 5   
OR1C1 100 - 0 5   
OR2A25 100 - 0 5   
OR2J2 92 - 0 5   
OR2J3 100 - 0 5   
OR51L1 88 - 0 5, 0 10, 0 14   
OR5K1 100 - 0 5   
OR8D1 96 - 0 5   
OR8K3 92 - 0 5   
OR51A2 84 - 0 10   
OR51A4 84 - 0 10   
OR51A7 84 - 0 10   
OR51B2 100 - 0 10   
OR51B4 100 - 0 10   
OR51B5 ? - 0 10   
OR51F1 34 - 0 10   
OR51G1 73 - 0 10   
OR51V1 69 - 0 10   
OR52A4 46 - 0 10   
OR52B2 100 - 0 10   
OR52B4 92 - 0 10   
OR52E2 42 - 0 10   
OR52E6 88 - 0 10   
OR52E8 84 - 0 10   
OR52N4 100 - 0 10   
OR56A1 100 - 0 10   
OR56A5 69 - 0 10   
OR2B11 100 - -0.3333 5   
OR2W1 53 - -0.9333 5   
OR5P3 100 - -2.5167 5   
 

SMILES:
CCCC(=O)[O-]

Aroma Description:
sharp, acetic, cheesy, buttery, fruity, dairy, creamy

Receptor Expr.% Agonist? Dock Score Known agonist Correlated Perceptual Qualities

Dock Score is a measure of how strongly the algorithm thinks the odorant is likely to be an agonist of the receptor.
Receptors in italics are "orphans", i.e. receptors whose agonists have not been identified experimentally.

1.) The Good Scents Company

2.) Mainland JD, Li YR, Zhou T, Liu WL, Matsunami H. Human olfactory receptor responses to odorants. Sci Data. 2015 Feb 3;2:150002. doi: 10.1038/sdata.2015.2. PMID: 25977809; PMCID: PMC4412152.

3.) Guenhael Sanz, Claire Schlegel, Jean-Claude Pernollet and Loic Briand Comparison of Odorant Specificity of Two Human Olfactory Receptors from Different Phylogenetic Classes and Evidence for Antagonism Chemical Senses vol. 30 no. 1 (2005) doi:10.1093/chemse/bji002

4.) YOSHIFUMI FUJITA, TOMOKO TAKAHASHI, AKIKO SUZUKI, KAYO KAWASHIMA, FUTOSHI NARA & RYUTA KOISHI (2007) Deorphanization of Dresden G Protein-Coupled Receptor for an Odorant Receptor, Journal of Receptors and Signal Transduction, 27:4, 323-334, DOI: 10.1080/10799890701534180

5.) Adipietro KA, Mainland JD, Matsunami H (2012) Functional Evolution of Mammalian Odorant Receptors. PLoS Genet 8(7): e1002821. doi:10.1371/ journal.pgen.1002821

6.) Keller A, Zhuang H, Chi Q, Vosshall LB, Matsunami H. Genetic variation in a human odorant receptor alters odour perception. Nature. 2007 Sep 27;449(7161):468-72. doi: 10.1038/nature06162. Epub 2007 Sep 16. PMID: 17873857.

7.) Aisenberg, W., Huang, J., Zhu, W. et al. Defining an olfactory receptor function in airway smooth muscle cells. Sci Rep 6, 38231 (2016). https://doi.org/10.1038/srep38231

8.) Dunkel, A.; Steinhaus, M.; Kotthoff, M.; Nowak, B.; Krautwurst, D.; Schieberle, P.; Hofmann, T. Nature’s chemical signatures in human olfaction: A foodborne perspective for future biotechnology. Angew. Chem. Int. Ed. Engl. 2014, 53, 7124–7143.

9.) Halperin Kuhns, V. L., Sanchez, J., Sarver, D. C., Khalil, Z., Rajkumar, P., Marr, K. A., & Pluznick, J. L. (2019). Characterizing novel olfactory receptors expressed in the murine renal cortex. American Journal of Physiology-Renal Physiology, 317(1), F172-F186.

10.) Geithe, C.; Andersen, G.; Malki, A.; Krautwurst, D. A butter aroma recombinate activates human class-I odorant receptors. J. Agric. Food Chem. 2015, 63, 9410–9420.

11.) Christian B. Billesbølle, Claire A. de March, Wijnand J. C. van der Velden, Ning Ma, Jeevan Tewari, Claudia Llinas del Torrent, Linus Li, Bryan Faust, Nagarajan Vaidehi, Hiroaki Matsunami, Aashish Manglik. Structural basis of odorant recognition by a human odorant receptor. bioRxiv 2022.12.20.520951; doi: https://doi.org/10.1101/2022.12.20.520951

12.) Chatelain Pierre, Veithen Alex, Olfactory Receptors involved in the perception of sweat carboxylic acids and the use thereof. WO 2014/191047

13.) Huiwen Ren, Ruijing Zhang, Haibo Zhang, Che Bian. Ecnomotopic olfactory receptors in metabolic regulation. Biomedicine & Pharmacotherapy 179 (2024) 117403

14.) Roger Emter, Christel Merillat, Fiona Buchli, Felix Flachsmann, Andreas Natsch. Decoding human olfaction by high heterologous expression of odorant receptors detecting signature odorants. Current Biology, October 10, 2025

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