CheckVegan

Is Thymine vegetarian?

Thymine

Vegetarian Vegetarian
Vegan Vegan

Thymine is one of the four nucleobases in DNA, a pyrimidine derivative also known as 5-methyluracil; it is produced synthetically for cosmetic and research use, though it was first isolated from calf thymus glands.

Also known as 2,4-(1H,3H)-Pyrimidinedione, 5-methyl-, 5-Methyluracil
INCI name Thymine
CAS number 65-71-4
EC number 200-616-1
CosIng ID 59742
Last reviewed 10 July 2026

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

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