Atezolizumab vs Captopril

## Atezolizumab vs Captopril: Overview

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

## Mechanism of Action

**Atezolizumab**: Fully human anti-PD-L1 IgG1 monoclonal antibody blocking PD-L1 interaction with PD-1 and B7.1.

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

## Pharmacokinetics

**Half-life**: Atezolizumab — 27 days; Captopril — 1.9 hours.

## Chemical Properties

**Molecular Formula**: Atezolizumab — N/A; Captopril — C9H15NO3S.

**Molecular Weight**: Atezolizumab — N/A; Captopril — 217.2850 g/mol.

**Type**: Atezolizumab — Antibody; Captopril — Small molecule.