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Top 10 CAS No. 106261-64-7 Manufacturers of Pharmaceutical Intermediate in 2025

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Understanding CAS No. 106261-64-7 – A Critical Intermediate for Tenofovir Prodrug Synthesis

CAS No. 106261-64-7, known as Tenofovir disoproxil, is a pivotal pharmaceutical intermediate used in the manufacture of Tenofovir disoproxil fumarate (TDF), a widely prescribed antiviral drug for HIV/AIDS and chronic hepatitis B treatment.

This intermediate is essential for creating the orally bioavailable prodrug form of Tenofovir, improving drug absorption and efficacy.


Importance of CAS No. 106261-64-7 in Pharmaceutical Manufacturing

Key to Oral Prodrug Formulation

Enables the synthesis of Tenofovir disoproxil fumarate, enhancing pharmacokinetics and patient compliance.

Integral to Global HIV/HBV Therapy

TDF is a WHO-recommended drug used extensively in global treatment programs.

High Purity & Regulatory Standards Required

Manufacturers must ensure compliance with FDA, EMA, and WHO GMP guidelines.

Support for Generic and Branded Production

Intermediate supply is crucial to both originator and generic pharmaceutical companies.

Robust Supply Chain & Documentation

Global health initiatives depend on reliable, well-documented intermediates.


Top 10 Manufacturers of CAS No. 106261-64-7

1. Gilead Sciences (via Licensees)

  • Location: Foster City, California, USA

  • Overview: Original innovator of Tenofovir disoproxil fumarate; oversees global licensing and quality standards.

  • Specialty: High compliance and proprietary processes.

2. Farmhispania Group

  • Location: Barcelona, Spain

  • Overview: Specializes in antiviral intermediates including Tenofovir prodrug precursors, supplying multiple global generic producers.

  • Specialty: GMP-certified scalable manufacturing.

3. Eastfine

  • Location: Changzhou City, Jiangsu Province, China

  • Overview: Eastfine provides high-quality CAS 106261-64-7 with strict stereochemical control and regulatory documentation for export worldwide.

  • Specialty: Cost-effective and consistent supply for antiviral APIs.

4. Sai Life Sciences

  • Location: Hyderabad, India

  • Overview: Offers CDMO services and large-scale production of nucleoside prodrug intermediates.

  • Specialty: Process development and regulatory expertise.

5. Olon S.p.A.

  • Location: Milan, Italy

  • Overview: European-based manufacturer with FDA and EMA audited facilities for antiviral intermediates.

  • Specialty: High-purity production and supply chain reliability.

6. Cipla Ltd.

  • Location: Mumbai, India

  • Overview: Manufactures TDF intermediates and APIs, supporting global public health antiviral programs.

  • Specialty: WHO prequalification and affordable antiviral drug supply.

7. Carbogen Amcis

  • Location: Bubendorf, Switzerland

  • Overview: Provides custom and commercial GMP manufacturing of antiviral intermediates including Tenofovir disoproxil.

  • Specialty: Advanced analytical and regulatory support.

8. Delmar Chemicals

  • Location: Montreal, Canada

  • Overview: Supplies antiviral intermediates with emphasis on North American and global market compliance.

  • Specialty: Regulatory documentation and quality systems.

9. Aarti Pharmalabs

  • Location: Maharashtra, India

  • Overview: Manufactures a range of pharmaceutical intermediates, including nucleotide prodrugs for antiviral APIs.

  • Specialty: Industrial scale GMP production.

10. Chemcon Speciality Chemicals

  • Location: Gujarat, India

  • Overview: Provides pharmaceutical intermediates for antivirals with robust quality management systems.

  • Specialty: Reliable supply and process optimization.


Trends in the Pharmaceutical Intermediates Market

Sustained Demand for HIV/HBV Antivirals

Growing global treatment programs maintain strong need for Tenofovir disoproxil intermediates.

Regulatory Compliance Remains a Focus

Stringent impurity and stability criteria push manufacturers toward continuous process improvements.

Shift Toward Contract Manufacturing

Pharmaceutical companies increasingly rely on specialized CDMOs for intermediate production.

Green Chemistry and Process Efficiency

Efforts to reduce environmental impact are shaping synthetic methods for phosphonate prodrugs.

Supply Chain Diversification

Buyers favor diversified sourcing from India, Europe, and trusted Chinese suppliers like Eastfine.


Conclusion

CAS No. 106261-64-7 is a cornerstone intermediate enabling the production of Tenofovir disoproxil fumarate, a key antiviral medicine for HIV and hepatitis B. With trusted suppliers such as Eastfine, Farmhispania, Sai Life Sciences, and Olon, the global supply chain remains resilient and high quality.

As public health programs expand access to antiviral drugs worldwide, reliable production and supply of this intermediate are critical to sustaining treatment efforts.


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