Erlotinib vs Methotrexate

Erlotinib vs Methotrexate: Overview

This comparison examines the pharmacological differences between Erlotinib and Methotrexate.

Mechanism of Action

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

Methotrexate: Dihydrofolate reductase inhibitor.

Pharmacokinetics

Half-life: Erlotinib — 36 hours; Methotrexate — 3-10 hours.

Chemical Properties

Molecular Formula: Erlotinib — C22H23N3O4; Methotrexate — C20H22N8O5.

Molecular Weight: Erlotinib — 393.4380 g/mol; Methotrexate — 454.4400 g/mol.

Type: Erlotinib — Small molecule; Methotrexate — Small molecule.