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Is Isopropyl 3-Methylthiobutyrate vegetarian?

Isopropyl 3-Methylthiobutyrate

Vegetarian Vegetarian
Vegan Vegan

Isopropyl 3-Methylthiobutyrate is a synthetic sulfur-containing ester used as a fragrance ingredient.

Also known as S-Isopropyl 3-methylthiobutyrate
INCI name Isopropyl 3-Methylthiobutyrate
CAS number 34322-06-0
EC number 251-936-3
CosIng ID 39732
Last reviewed 4 July 2026

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

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