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Oseltamivir Phosphate Structure

PRODUCT TYPE

API

GRADE

BP / USP

CHEMICAL FORMULA

C16H28N2O4·H3PO4

IUPAC NAME

(3R,4R,5S)-4-Acetamido-5-amino-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid, ethyl ester, phosphate (1:1)

CAS NO

204255-11-8

MOLECULAR WEIGHT

410.42 g/mol

CHEMICAL CLASS

Carboxylate ester

THERAPEUTIC CLASS

Antiviral agent

Synonyms

PHYSIOCHEMICAL PROPERTIES

Appearance Yellow crystalline powder
Solubility Freely soluble in water and methanol; slightly soluble in ethanol; practically insoluble in acetone and ether
Melting Point 186 – 191°C
pH (1% aqueous solution) 5.0 – 6.5

Product Description

Oseltamivir Phosphate is a potent neuraminidase inhibitor used worldwide for the treatment and prevention of influenza A and B infections. It blocks the release of viral particles from infected cells, reducing both the severity and duration of influenza symptoms.

How Oseltamivir Phosphate Works

Oseltamivir Phosphate is a prodrug that is converted in the liver to its active metabolite, oseltamivir carboxylate. The active form selectively inhibits viral neuraminidase enzymes, preventing the release and spread of new viral particles from infected host cells.

Use(s)

Adverse Effects

Why choose Salius for Oseltamivir Phosphate?

  1. WHO-GMP Certified Manufacturing
    Manufactured in WHO-GMP and ISO 9001:2015 compliant facilities ensuring high purity, safety, and compliance with global pharmacopoeial standards.
  2. Consistent Quality and Reliability
    Each batch undergoes validated HPLC purity analysis (>99.5%), polymorphic control, and residual solvent testing to ensure consistent pharmaceutical-grade quality.
  3. Global Export Experience & Documentation Support
    Comprehensive regulatory documentation (DMF, CTD/ACTD dossiers, impurity and stability data) provided for global submissions, including ANVISA, INVIMA, COFEPRIS, and SFDA markets.
  4. Documents We Provide
  5. Sustainable and Safe Production
    Green manufacturing practices with solvent recovery, reduced effluent generation, and validated safe handling processes supporting sustainability goals.
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

Manufactured under GMP and ICH Q7 guidelines with strict control on polymorphic form, purity (>99.5%), and residual solvents to meet BP/USP standards.

Yes. We supply both pharmaceutical-grade and government tender-grade API with full COA, TDS, and traceability documentation.

We provide CTD/ACTD dossiers and DMF open parts for registrations in regulated and semi-regulated markets, with regional adaptations for authorities like ANVISA, COFEPRIS, and SFDA.

Oseltamivir Phosphate is stable at ambient temperature; shipments to high-humidity regions are protected using desiccants, vacuum-sealed liners, and thermal packaging validated for Zone IVB.

Yes. The facility incorporates solvent recovery, low effluent discharge, and energy-efficient synthesis processes supporting environmental sustainability.

Yes. Samples (5–25 g) with COA and TDS are available. Full documentation (DMF, stability, CTD) can be shared under NDA for evaluation and registration.

Place an Order or Request a Quote from Salius Pharma

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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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