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Sulfamethoxazole Structure

Product Type

API

Grade

IP/BP/USP

Chemical Formula

C10H11N3O3S

IUPAC Name

4-amino-N-(5-methyl-1,2-oxazol-3-yl)benzenesulfonamide

CAS No.

723-46-6

Molecular Weight

253.28 g/mol

Chemical Class

sulfonamides

Synonyms

PHYSIOCHEMICAL PROPERTIES

Appearance White to pale yellow crystalline powder
Solubility Slightly soluble in water (0.61 mg/mL at 25°C)
Melting point ~ 169–172 °C
pH 4.0 to 6.5

Product Description

Sulfamethoxazole is an antibiotic that belongs to the class of drugs known as sulfonamides or sulfa drugs. It is commonly used to treat bacterial infections.

How Sulfamethoxazole Works

Sulfamethoxazole inhibits bacterial synthesis of dihydrofolic acid by competing with para-aminobenzoic acid (PABA), which is essential for folate synthesis. When combined with trimethoprim, which inhibits a later step in folate synthesis, the combination is synergistic, making it more effective.

Use(s)

Adverse Effects

Why choose Salius for Sulfamethoxazole?

  1. Regulatory-Grade Manufacturing Standards
    They maintain WHO GMP compliance, with some facilities FDA certified, and follow stringent internal QC protocols. Every batch is tested in state-of-the-art labs before release
  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 markets.
  3. Global Export Experience & Documentation Support
    Salius regularly exports APIs, provides regulatory documents (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

Like many antibiotics, sulfamethoxazole can disrupt the balance of beneficial bacteria in the gut, potentially leading to issues like antibiotic-associated diarrhea or overgrowth of resistant bacteria.

Sulfamethoxazole can crystallize in the urine, causing kidney irritation or stones. Drinking plenty of fluids helps prevent crystal formation and protects kidney function.

No. Sulfamethoxazole targets bacterial folate synthesis and has no effect on viruses or fungi. Its use is limited to bacterial infections.

Salius Pharma supplies Sulfamethoxazole as an Active Pharmaceutical Ingredient (API) and can also arrange finished dosage forms upon request

To order Sulfamethoxazole API, you typically contact a certified pharmaceutical supplier like Salius Pharma. You’ll need to provide details such as desired quantity, intended market, regulatory requirements (e.g., DMF or GMP certificates), and packaging preferences.

Salius Pharma exports Sulfamethoxazole to various countries worldwide, including regions such as Asia, Europe, the Middle East, Africa, North America & South America

Place an Order or Request a Quote

Looking to source Sulfamethoxazole or other high-quality pharmaceutical products? We’re here to help. Whether you need Active Pharmaceutical Ingredients (APIs), finished formulations, or regulatory support, our team is ready to provide dependable, compliant, and cost-effective solutions tailored to your market needs.

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