CheckVegan

Is Thiofentanyl vegetarian?

Thiofentanyl

Vegetarian Vegetarian
Vegan Vegan

Thiofentanyl is a synthetic opioid analgesic and fentanyl analogue with a thiophene ring replacing the phenethyl group's phenyl ring, notable for its high potency.

Also known as N-Phenyl-N-(1-((2-thienyl)ethyl)-4-piperidinyl)propanamide
INCI name Thiofentanyl
CAS number 1165-22-6
CosIng ID 81553
Last reviewed 10 July 2026

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

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