2-ethylpyrazine

roasted pyrazine

Found in 37 ingredients across the CompKitchen flavor graph.

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

2D Lewis Structure

Formula: C6H8N2
Molecular weight: 108.14 g/mol
PubChem CID: 26331 — full record on PubChem

Properties

Odor description: bitter, butter, cocoa, musty, nutty, peanut, peanut butter, roasted, wood, woody
Odor threshold — orthonasal, in clean water: 14000 ppb 1 published value · see all 4 with sources
Volatility: high
CAS number: 13925-00-3
Retention index: 1263

Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match

FEMA number: 3281
GRAS publication: GRAS 5
FEMA primary name: 2-Ethylpyrazine

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

Source: FEMA GRAS publications 1-33.

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 pyrazine ethyl-pyrazine

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

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.

peanut butter, wood Flavornet Cas

—

bitter, butter, cocoa, musty, nutty, peanut, peanut butter, roasted, wood, woody shown above FlavorDB 2.0

peanut butter, wood, butter, musty, peanut, nutty, woody, roasted, cocoa, bitter, peanutbutter FlavorDB 2.0

nutty FlavorDB 2.0

fruity, earthy, spicy, honey, sweaty, catty, coffee, green, grassy, woody, sweet, vanilla FlavorDB 2.0

caramel, chemical, coffee 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.

Unresolved

An authoritative source gives peanut butter, wood, which disagrees with the description shown above. Held rather than switched: the authority is terser than the corpus here, and which should win is a rule we have not set.

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

14000 ppb

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

Threshold	Matrix	Source	Paper
14000 ppb	water_odor	Leffingwell	—

In a food matrix

0.980 ppb – 37.0 ppb

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

Threshold	Matrix	Source	Paper
0.980 ppb	water (food: unknown)	Literature corpus	—
2.0 ppb	water (food: sesame)	Literature corpus	—
37.0 ppb	water (food: fish)	Literature corpus	—

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 2-ethylpyrazine. 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 2-ethylpyrazine in it.

10 cmpds

26 cmpds

32 cmpds

79 cmpds