3-Mercaptohexyl acetate: Aroma, Smell and Safety | PatientsCann UK Skip to main content Back to Sulphur Compounds Guide S3-MHA 3-Mercaptohexyl acetate 3-mercaptohexyl acetate, 3-sulfanylhexyl acetate, 3-MHA pronounced: three mer-KAP-toh-HEX-il ASS-uh-tate The passion-fruit molecule. The acetate cousin of 3-MH, even more tropical. Tropical & fruityFormula: C8H16O2SExtremely potent Aroma familyTropical FormulaC8H16O2S Mass176.28 g/mol Main notePassion fruit 3-Sulfanylhexyl acetate · 176.28 g/mol The molecule Chemical structure This is the accurate skeletal structure of 3-Mercaptohexyl acetate, drawn from PubChem data. Each corner and line-end is a carbon atom. The yellow S marks sulphur, the atom that gives this whole family its powerful smell. Passion fruitTropicalFruityCitrus About What is 3-Mercaptohexyl acetate? 3-Mercaptohexyl acetate, or 3-MHA, is the acetate cousin of 3-MH. Adding the acetate group pushes the smell even further towards passion fruit and tropical punch. Like 3-MH, it is a star of flavour chemistry in wine and beer, and it was reported among the compounds behind fruity, exotic cannabis. What the research says The Science The 2023 study grouped 3-MHA with 3-MH as key drivers of tropical, fruity aromas in certain cultivars. The two often appear together. It is another extremely powerful smell, active at tiny concentrations. Aroma snapshot How 3-Mercaptohexyl acetate Smells Tropical & fruity family Passion fruitTropicalFruityCitrus Smell strength: Extremely potent An even punchier passion-fruit smell, powerful at trace levels. You might also smell it in: Passion fruit, tropical beers and white wines. Its role in the smell Part of the Whole Layers a ripe passion-fruit punch over the top of fruity cultivars, deepening their tropical character. Good to know A Note on Safety 3-Mercaptohexyl acetate is an aroma compound, present in cannabis in trace amounts. It is not a medicine and has no dose of its own. What matters for you is the whole product and how it is prescribed. Always choose and adjust your medicine with your prescriber and pharmacist, never by smell alone. Questions 3-Mercaptohexyl acetate: Common Questions What is the difference between 3-MH and 3-MHA? They are close cousins. 3-MHA has an extra acetate group, which shifts its smell from grapefruit towards passion fruit. They often occur together. Do these tropical smells mean the cannabis is stronger? No. Smell and strength are separate. A tropical aroma tells you about the plant’s sulphur compounds and terpenes, not about its cannabinoid content. Previous3-Mercaptohexan-1-ol NextDimethyl sulphide Back to full Sulphur Compounds Guide Important: This page is for education only. It is not medical advice. Research into cannabis sulphur compounds is very new, and most work so far is about smell, not treatment. The garlic comparison is about chemistry, not proven health effects. Always speak to your prescriber before changing your treatment. PatientsCann UK does not recommend any specific cannabis product. References Oswald, I.W.H., Ojeda, M.A., Pobanz, R.J., Koby, K.A., Buchanan, A.J., Del Rosso, J., Guzman, M.A. and Martin, T.J. (2021) ‘Identification of a new family of prenylated volatile sulfur compounds in cannabis revealed by comprehensive two-dimensional gas chromatography’, ACS Omega, 6(47), pp. 31667-31676. doi: 10.1021/acsomega.1c04196. Oswald, I.W.H. et al. (2023) ‘Minor, nonterpenoid volatile compounds drive the aroma differences of exotic cannabis’, ACS Omega, 8(36), pp. 39203-39216. Russo, E.B. (2011) ‘Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects’, British Journal of Pharmacology, 163(7), pp. 1344-1364. doi: 10.1111/j.1476-5381.2011.01238.x. National Center for Biotechnology Information (2025) PubChem Compound Database. Bethesda: U.S. National Library of Medicine. Available at: https://pubchem.ncbi.nlm.nih.gov (Accessed: 3 August 2026).
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