Captopril vs Osimertinib

## Captopril vs Osimertinib: Overview

This comparison examines the pharmacological differences between **Captopril** and **Osimertinib**.

## Mechanism of Action

**Captopril**: First orally active ACE inhibitor; contains thiol group that binds zinc at ACE active site.

**Osimertinib**: Third-generation irreversible EGFR TKI targeting T790M resistance mutation and activating mutations.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Osimertinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Osimertinib — C28H33N7O2.

**Molecular Weight**: Captopril — 217.2850 g/mol; Osimertinib — 499.6050 g/mol.

**Type**: Captopril — Small molecule; Osimertinib — Small molecule.