Methotrexate vs Tamoxifen

## Methotrexate vs Tamoxifen: Overview

This comparison examines the pharmacological differences between **Methotrexate** and **Tamoxifen**.

## Mechanism of Action

**Methotrexate**: Dihydrofolate reductase inhibitor.

**Tamoxifen**: Selective estrogen receptor modulator (SERM).

## Pharmacokinetics

**Half-life**: Methotrexate — 3-10 hours; Tamoxifen — 5-7 days.

## Chemical Properties

**Molecular Formula**: Methotrexate — C20H22N8O5; Tamoxifen — C26H29NO.

**Molecular Weight**: Methotrexate — 454.4400 g/mol; Tamoxifen — 371.5150 g/mol.

**Type**: Methotrexate — Small molecule; Tamoxifen — Small molecule.