ethyl 3-(methylthio)propionate

ester Key food odorant

Found in 20 ingredients across the CompKitchen flavor graph.

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

Key food odorant (individualist)

Dunkel et al. 2014

Identified in the meta-analysis of 227 food samples as one of 151 individualist odorants — appears in <5% of foods, carries the diagnostic signature of specific ingredients.

Source: Angew. Chem. Int. Ed. 2014, 53, 7124–7143

Properties

Odor description: fruity, metallic, pineapple, pulpy, ripe, sulfury, tomato
Odor threshold — orthonasal, in clean water: 7.0 ppb 1 published value · see all 1 with sources
CAS number: 13327-56-5

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.

Also filed as

ethyl 3-(methylthio)-propionate ethyl 3-methylthiopropionate

Same molecule, unified here — previously counted and displayed as separate compounds.

Published thresholds

1 measured value 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

7.0 ppb

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

Threshold	Matrix	Source	Paper
7.0 ppb	water_odor	Leffingwell	—

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.

Thresholds in published tables

Numbers printed in open-access papers, grouped by the medium the table states. Median and full range of the values; “agree” means two or more papers whose middle 80% of values sit within 100×. Not reviewed.

Medium	Median	Range	Values	Papers	Papers agree?
air	7.69 µg/L air	7–8.45	3	1	one paper
ethanol solution	3080 ppb	3.08e+03–3.08e+03	1	1	one paper
food matrix	1544 ppb	7–3.08e+03	2	2	no (2.6 decades)
unstated	8.45 ppb	7–3.08e+03	6	6	yes
water	7.725 ppb	7–8.45	4	3	yes

Found in

Measured impact first, then profile share

Every ingredient known to contain ethyl 3-(methylthio)propionate. 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 ethyl 3-(methylthio)propionate in it.

126 cmpds

130 cmpds

131 cmpds

132 cmpds