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Methotrexate Structure

PRODUCT TYPE

API

GRADE

IP / BP / USP / EP

CHEMICAL FORMULA

C₂₀H₂₂N₈O₅

IUPAC NAME

(2S)-2-[(4-{[(2,4-diaminopteridin-6-yl)methyl]methylamino}benzoyl)amino]pentanedioic acid

CAS NUMBER

59-05-2

MOLECULAR WEIGHT

454.44 g/mol

CHEMICAL CLASS

Antimetabolite | Antifolate | Antineoplastic & Immunosuppressant

Synonyms

PHYSIOCHEMICAL PROPERTIES

Appearance Yellow to orange crystalline powder
Solubility Slightly soluble in water; soluble in alkaline solutions
Melting Point >300 °C (decomposes)
pKa ~4.7

Product Description

Methotrexate is a widely used antimetabolite and antifolate agent indicated for the treatment of various cancers and autoimmune disorders. It inhibits dihydrofolate reductase, thereby interfering with DNA synthesis, repair, and cellular replication.

How Methotrexate Works

Methotrexate competitively inhibits the enzyme dihydrofolate reductase (DHFR), leading to reduced formation of tetrahydrofolate. This results in impaired synthesis of thymidylate and purine nucleotides, ultimately inhibiting DNA and RNA synthesis. Rapidly dividing cells, such as cancer cells and activated immune cells, are particularly affected.

Use(s)

Adverse Effects

Why choose Salius for Methotrexate?

  1. Regulatory-Grade Manufacturing Standards
    They maintain stringent WHO GMP standards, with some facilities FDA certified, and follows strict internal QC protocols. Every batch is tested in state-of-the-art labs before release, to ensure consistent quality, safety & efficacy
  2. Cost-Effectiveness
    As a generic manufacturer and export house, Salius aims to deliver high-quality APIs at competitive prices—a key advantage for cost-sensitive and emerging markets.
  3. Global Export Experience & Documentation Support
    Salius regularly exports APIs, provides regulatory dossiers (DMF, impurity profiles), and supports filings for international clients—even in stringent regulated markets
  4. Documents We Provide
  5. Transparency & Trustworthiness
    They present as a government-recognized star export house with strong quality and delivery ratings.
Attribute Why Salius Pharma Is a Good Choice
Quality Certification WHO GMP, ISO 9001:2015, FDA audited facilities
Affordability & Generic Access Cost competitive generics for global supply
Export Experience Proven track record of supplying globally

What You Receive in Our Package

When you order from Salius Pharma, you receive more than just a product — you receive a complete, professionally prepared package that meets international regulatory and quality expectations.

Each Shipment Includes:

Product

Expected Delivery Time

We ensure prompt and reliable shipping worldwide. Delivery times vary depending on destination, order volume, and regulatory requirements.

Overall Delivery Time:

7 to 21 business days from dispatch, depending on your location.

FAQs

Store in a cool, dry place (2-8°C), protected from light in airtight containers to prevent degradation.

It inhibits dihydrofolate reductase, blocking folic acid metabolism to halt DNA synthesis in rapidly dividing cancer and immune cells.

Methotrexate treats acute lymphoblastic leukemia (ALL), non-Hodgkin lymphoma, osteosarcoma, breast cancer, rheumatoid arthritis (RA), psoriasis, and ectopic pregnancy as an antimetabolite.

Refrigerate at 2-8°C in amber airtight containers, protected from light/oxidation; shelf-life 2-3 years under GMP.

Folate analog antimetabolite; immunosuppressant at low doses, cytotoxic at high doses; polyglutamated intracellularly for retention.

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