CheckVegan

Is Isoprene vegetarian?

Isoprene

Vegetarian Vegetarian
Vegan Vegan

Isoprene, or 2-methyl-1,3-butadiene, is a volatile organic compound naturally produced by many plants and animals, and is also manufactured synthetically as a colorless volatile liquid. It is the key monomer used to produce synthetic natural rubber-like polymers.

Also known as 2-Methyl-1,3-butadiene
INCI name Isoprene
CAS number 78-79-5
EC number 201-143-3
CosIng ID 30165
Last reviewed 9 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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