Fentanyl vs Upadacitinib

## Fentanyl vs Upadacitinib: Overview

This comparison examines the pharmacological differences between **Fentanyl** and **Upadacitinib**.

## Mechanism of Action

**Fentanyl**: Highly potent synthetic mu-opioid receptor agonist approximately 100 times more potent than morphine.

**Upadacitinib**: Selective JAK1 inhibitor reducing signaling from cytokines implicated in autoimmune diseases.

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Upadacitinib — 380.3700 g/mol.

**Type**: Fentanyl — Small molecule; Upadacitinib — Small molecule.