Aroma molecule · thiol
3-methyl-2-butene-1-thiol
Smells ofamine, smoke
Found in 3 ingredients. We hold no measured concentration for it in any of them yet, so we cannot say where it is strong enough to smell.
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- Formula
- C5H10S
- Mass
- 102.20 g/mol
- CAS
- 5287-45-6
- PubChem
- 146586
- FEMA
- not listed
- Threshold
- 136,931 ppb
- Class
- thiol
- Status
- Aroma-active
01How little it takes
- in water 0.00025
ppb, log scale · tick = median of published values, bar = full range, from open-access paper tables (not reviewed)
02Where it turns up
- Drinks3
of the 3 ingredients that contain it, by food group
03What it travels with
Too few ingredients to say what it travels with.
What does 3-methyl-2-butene-1-thiol smell like?
Sources describe it as amine, smoke.
How this molecule is described
- amine, smoke shown above Flavornet Cas
- amine, smoke, sulfurous, leek, onion FlavorDB 2.0
Ordered by how many independent descriptor streams give each wording, then by how often it appears. The bar is replication (one source copied onto many ingredients scores high), not corroboration.
Which foods contain 3-methyl-2-butene-1-thiol?
We list 3 ingredients that contain it, but presence is not the same as smell. What matters is how much is there compared with how little it takes to notice it. That ratio is the odour activity value (OAV): above 1, you can smell it.
Found in
Measured foods first, then real food profiles, then thin or composite records (marked). The figure beside each is how many compounds that ingredient has in total, not the amount of 3-methyl-2-butene-1-thiol in it. ✓n = sources that recorded the link.
How strong is 3-methyl-2-butene-1-thiol?
Our working odour threshold is 136930.64 ppb.
Thresholds in published tables
| Medium | Median | Range | Values | Papers | Papers agree? |
|---|---|---|---|---|---|
| unstated | 0.0002 ppb | 0.0002–0.0002 | 1 | 1 | one paper |
| water | 0.00025 ppb | 0.0002–0.00076 | 3 | 3 | yes |
Numbers printed in open-access papers, grouped by the medium the table states. Median and full range; “agree” means two or more papers whose middle 80% of values sit within 100×. Not reviewed.
- Volatility
- high
- Retention index
- 823
Is 3-methyl-2-butene-1-thiol safe to eat?
Not in FEMA GRAS publications 1–33. Of 3,367 listed flavoring substances, none match this compound or its other names. It may still be food-safe under other regulatory routes (FDA 21 CFR 172, EFSA, JECFA); check femaflavor.org for the authoritative current list.
3-methyl-2-butene-1-thiol questions
What does 3-methyl-2-butene-1-thiol smell like?
Sources describe 3-methyl-2-butene-1-thiol as amine and smoke.
Which foods contain 3-methyl-2-butene-1-thiol?
We list 3 ingredients that contain 3-methyl-2-butene-1-thiol.
How strong is 3-methyl-2-butene-1-thiol?
Our working odour threshold for 3-methyl-2-butene-1-thiol is 136,931 ppb.
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Cite this analysis
Compound Kitchen (2026). 3-methyl-2-butene-1-thiol compound data sheet. https://compkitchen.com/compound/3-methyl-2-butene-1-thiol. Accessed 2026-11-03.
@misc{compkitchen_compound_3_methyl_2_butene_1_thiol_compound_data_sheet_2026,
title = {3-methyl-2-butene-1-thiol compound data sheet},
author = {{Compound Kitchen}},
year = {2026},
url = {https://compkitchen.com/compound/3-methyl-2-butene-1-thiol},
note = {Accessed: 2026-11-03}
}
Methodology DOI: 10.5281/zenodo.19719459 · CC BY 4.0 · Citations are a request, not a requirement.