Methotrexate vs Sodium Pertechnetate Tc 99M

## Methotrexate vs Sodium Pertechnetate Tc 99M: Overview

This comparison examines the pharmacological differences between **Methotrexate** and **Sodium Pertechnetate Tc 99M**.

## Mechanism of Action

**Methotrexate**: Dihydrofolate reductase inhibitor.

## Pharmacokinetics

**Half-life**: Methotrexate — 3-10 hours; Sodium Pertechnetate Tc 99M — N/A.

## Chemical Properties

**Molecular Formula**: Methotrexate — C20H22N8O5; Sodium Pertechnetate Tc 99M — N/A.

**Molecular Weight**: Methotrexate — 454.4400 g/mol; Sodium Pertechnetate Tc 99M — N/A.

**Type**: Methotrexate — Small molecule; Sodium Pertechnetate Tc 99M — Small molecule.