Erlotinib vs Vancomycin

## Erlotinib vs Vancomycin: Overview

This comparison examines the pharmacological differences between **Erlotinib** and **Vancomycin**.

## Mechanism of Action

**Erlotinib**: Reversible inhibitor of EGFR (HER1) tyrosine kinase, blocking autophosphorylation.

**Vancomycin**: Glycopeptide antibiotic inhibiting cell wall synthesis by binding D-Ala-D-Ala terminus of peptidoglycan precursors.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Vancomycin — 4-6 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Vancomycin — C66H75Cl2N9O24.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Vancomycin — 1449.2500 g/mol.

**Type**: Erlotinib — Small molecule; Vancomycin — Small molecule.