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4-pentenyl isothiocyanate

sulfurous sulfide

Found in 7 ingredients across the CompKitchen flavor graph.

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

2D Lewis structure of 4-pentenyl isothiocyanate
2D Lewis Structure
Formula
C6H9NS
Molecular weight
127.21 g/mol
PubChem CID
87436 — full record on PubChem

Properties

Odor description
mustard, horseradish
Odor threshold
220.0 ppb (1 source, non-SIDA)
Volatility
high
CAS number
18060-79-2
Regulatory · United States

FEMA GRAS — Generally Recognized As Safe for flavoring use

✓ Exact match
FEMA number
4427
GRAS publication
GRAS 23
FEMA primary name
4-Pentenyl isothiocyanate

Reported use levels (ppm by food category)

Typical vs maximum reported addition levels in finished food. Use as a regulatory ceiling reference — verify against the current GRAS publication for your product category.

Food category Typical (ppm) Maximum (ppm)
beverages (alcoholic) 1 10
beverages (nonalcoholic) 1 10
cheese 0.5 5
chewing gum 5 50
condiments/ relishes 100 700
hard candy 3 30
nut products 0.5 5
other grains 0.5 2.5
seasonings/ flavors 10 100
snack foods 2 20
soft candy 3 30
soups 0.5 5
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.

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.

mustard, horseradish shown above Flavornet Cas, Flavornet Name, Flavordb Odor Column 3 sources agree
—
horseradish, mustard FlavorDB 2.0
5

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

Found in

Measured impact first, then profile share

Every ingredient known to contain 4-pentenyl isothiocyanate. 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 4-pentenyl isothiocyanate in it.

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Try the pairing tools to see which ingredient combinations rely on 4-pentenyl isothiocyanate, or compare two ingredients side-by-side.