1h-pyrrole

nutty pyrrole

Found in 1 ingredient across the CompKitchen flavor graph.

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

Properties

Odor description: hazelnut-like
Odor threshold — orthonasal, in clean water: 49600 ppb 1 published value · see all 4 with sources
CAS number: 109-97-7
Retention index: 1499

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

? Partial match

FEMA number: 4332
GRAS publication: GRAS 23
FEMA primary name: 1-Methyl-1H-pyrrole-2-carboxaldehyde

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

Source: FEMA GRAS publications 1-33.

Published thresholds

4 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

49600 ppb

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

Threshold	Matrix	Source	Paper
49600 ppb	water_odor	Leffingwell	—

In a food matrix

14.8 ppb – 762 ppb

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

Threshold	Matrix	Source	Paper
14.8 ppb	water (food: bread)	Literature corpus	28958525
20.5 ppb	water (food: unknown)	Literature corpus	24053239, 31827229, 32517941 +2
762 ppb	water (food: lime)	Literature corpus	26213023

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.

Found in

Measured impact first, then profile share

Every ingredient known to contain 1h-pyrrole. 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 1h-pyrrole in it.

wine

beverage alcoholic

565 cmpds

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