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Compound sheet

Molecule · ketone

4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl

Found in 2 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
—
Mass
144.12 g/mol
CAS
28564-83-2
PubChem
—
Threshold
—
Class
ketone
Status
—

01How little it takes

  • in waterpapers disagree 35,000

Parts per billion (ppb), log scale · tick = median of published values, bar = full range, from open-access paper tables (not reviewed)

02Where it turns up

  • Fruit2

of the 2 ingredients that contain it, by food group

03What it travels with

Too few ingredients to say what it travels with.

What does 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl smell like?

We hold no odour description for 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl.

How this molecule is described

Also filed as: 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl- — same molecule, unified here.

Which foods contain 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl?

We list 2 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 suggests it may be noticeable; it is a screening indicator, not a guarantee.

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 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl in it. ✓n = sources that recorded the link.

How strong is 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl?

We hold no published odour threshold for 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl, so we cannot say how little of it you could smell.

Thresholds in published tables

MediumMedianRangeValuesPapersPapers agree?
air 3.5e+04 µg/L air 3.5e+04–3.5e+04 31 one paper
unstated 3.5e+04 ppb 3.5e+04–3.5e+04 11 one paper
water 3.5e+04 ppb 0.02–3.5e+04 33 no (6.2 decades)

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.

Is 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl 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.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

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Cite this analysis
Plain text
CompKitchen (2026). 4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl compound data sheet. https://compkitchen.com/compound/4h-pyran-4-one%2C%202%2C3-dihydro-3%2C5-dihydroxy-6-methyl. Accessed 2026-11-11.
BibTeX
@misc{compkitchen_compound_4h_pyran_4_one_2_3_dihydro_3_5_dihydroxy_6_methyl_compound_data_sheet_2026,
  title  = {4h-pyran-4-one, 2,3-dihydro-3,5-dihydroxy-6-methyl compound data sheet},
  author = {{CompKitchen}},
  year   = {2026},
  url    = {https://compkitchen.com/compound/4h-pyran-4-one%2C%202%2C3-dihydro-3%2C5-dihydroxy-6-methyl},
  note   = {Accessed: 2026-11-11}
}

Methodology DOI: 10.5281/zenodo.19719458 · CC BY 4.0 · Citations are a request, not a requirement.