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Compound sheet · CK-16418

Molecule · aldehyde

4-pentenal

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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2D structure of 4-pentenal, C5H8O
2D structure · PubChem 16418
Formula
C5H8O
Mass
84.12 g/mol
CAS
2100-17-6
PubChem
16418
FEMA
4262 · GRAS
Threshold
10 ppb
Class
aldehyde
Status
—

01How little it takes

No published odour threshold on file for 4-pentenal.

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 4-pentenal smell like?

We hold no odour description for 4-pentenal.

Which foods contain 4-pentenal?

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, 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 4-pentenal in it. ✓n = sources that recorded the link.

How strong is 4-pentenal?

Our working odour threshold is 10.0 ppb.

Volatility
high
Retention index
796

Is 4-pentenal safe to eat?

4-pentenal is listed by FEMA as generally recognized as safe (GRAS) for use as a flavoring: FEMA number 4262, published in GRAS 23. Check current FDA and EFSA guidance for your market and use level.

FEMA number
4262 ✓ exact match
Publication
GRAS 23
FEMA name
4-Pentenal

Use-level matrix not extracted for this substance; check the source publication for current ppm guidance.

Source: FEMA GRAS publications 1–33.

4-pentenal questions

Which foods contain 4-pentenal?

We list 2 ingredients that contain 4-pentenal.

How strong is 4-pentenal?

Our working odour threshold for 4-pentenal is 10 ppb.

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Cite this analysis
Plain text
Compound Kitchen (2026). 4-pentenal compound data sheet. https://compkitchen.com/compound/4-pentenal. Accessed 2026-11-03.
BibTeX
@misc{compkitchen_compound_4_pentenal_compound_data_sheet_2026,
  title  = {4-pentenal compound data sheet},
  author = {{Compound Kitchen}},
  year   = {2026},
  url    = {https://compkitchen.com/compound/4-pentenal},
  note   = {Accessed: 2026-11-03}
}

Methodology DOI: 10.5281/zenodo.19719459 · CC BY 4.0 · Citations are a request, not a requirement.