pentadecanal

green aldehyde

Found in 9 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C15H30O
Molecular weight: 226.40 g/mol
PubChem CID: 17697 — full record on PubChem

Properties

Odor description: fresh
Odor threshold — orthonasal, in clean water: 430 ppb 1 published value · see all 6 with sources
Volatility: low
CAS number: 2765-11-9
Retention index: 1715

Not in FEMA GRAS publications 1-33. Of 3,367 listed flavoring substances, none match this compound name. May still be food-safe under other regulatory routes (FDA 21 CFR 172, EFSA, JECFA) — check femaflavor.org for the authoritative current list.

How this molecule is described

Sources disagree about odour more often than they disagree about chemistry. Rather than show one answer, here is every description on file with how many ingredient records carry it.

Descriptions on file

Ordered by how many independent descriptor streams give each wording, then by how often it appears. The bar is still replication — one source copied onto many ingredients scores high there — so the two can disagree.

fresh shown above Flavornet Cas, Flavornet Name, FlavorDB 2.0, Flavordb Odor Column 4 sources agree

fresh waxy FlavorDB 2.0

fresh, waxy FlavorDB 2.0

deterrent FlavorDB 2.0

Bars are the share of ingredient records carrying each description. High agreement means the sources replicate each other — not necessarily that they are right.

Published thresholds

6 measured values from the literature. Grouped by what was actually measured — a threshold smelled in clean water, tasted in the mouth, or measured in a real food are three different quantities and are not pooled.

Orthonasal, in clean water

430 ppb

The reference measurement — smelled in water. OAV is computed against this.

Threshold	Matrix	Source	Paper
430 ppb	water	PMC open access	—

In a food matrix

3.4 ppb – 2026 ppb

Measured in a real food, where the matrix shifts detection — not a clean-water value.

Threshold	Matrix	Source	Paper
3.4 ppb SIDA	water (food: ginger)	Literature corpus	32625638, 17898513, 24441709 +4
14.0 ppb	water (food: soy sauce)	Literature corpus	17898513
218 ppb SIDA	water (food: unknown)	Literature corpus	32625638, 24441709, 34653803 +2
2026 ppb	water (food: beef)	Literature corpus	38974721

Other matrix

1000 ppb

Measured in a non-aqueous medium (oil, starch, cellulose).

Threshold	Matrix	Source	Paper
1000 ppb	unknown	PMC open access	—

Only values we can attribute are listed. Where a compendium's licence does not permit public attribution its figures are omitted here, so every number on this page traces to a citable source.

Where you'd actually smell it

Odor Activity Value = measured concentration ÷ odor threshold (324.0 ppb, the engine's canonical value — see the 6 published values). OAV ≥ 1 = perceptible.

Food	Concentration (ppb)	OAV	Source
extra virgin olive oil	486600.0	1502 ⚡	Corpus paper
beef	33.5	0.10	Corpus paper
ginger	19.6	0.06	Corpus paper
soybean sauce	6.1	0.02	—

Concentrations from PubMed Central Open Access papers (free literature corpus, MIT-style licensed). Copper = OAV ≥ 10 (strongly perceptible). Green = OAV ≥ 1 (perceptible).

Found in

Measured impact first, then profile share

Every ingredient known to contain pentadecanal. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of pentadecanal in it. Full concentrations are in the OAV table above.

292 cmpds

302 cmpds

357 cmpds

365 cmpds