ETHINYL ESTRADIOL; SEGESTERONE ACETATE: Pharmaceutical manufacturers, suppliers, and distributors

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Applicant	Tradename	Generic Name	Dosage	NDA	NDA/ANDA	Supplier	Package Code	Package	Marketing Start
Mayne Pharma	ANNOVERA	ethinyl estradiol; segesterone acetate	RING;VAGINAL	209627	NDA	Mayne Pharma	68308-752-01	1 POUCH in 1 CARTON (68308-752-01) / 30 RING in 1 POUCH	2024-08-16
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>NDA/ANDA	>Supplier	>Package Code	>Package	>Marketing Start

Last updated: February 19, 2026

Ethinyl estradiol and segesterone acetate are active pharmaceutical ingredients (APIs) used in combination for hormonal contraception. The market for these APIs is influenced by regulatory requirements, manufacturing capabilities, and the demand for contraceptive products globally. Key suppliers operate under strict quality control and good manufacturing practices (GMP) to ensure API purity and efficacy.

What are the primary suppliers for Ethinyl Estradiol?

Suppliers of ethinyl estradiol (EE) are specialized chemical manufacturers that produce high-purity APIs. These entities must comply with stringent regulatory standards set by agencies such as the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA).

BOC Sciences offers ethinyl estradiol as a research chemical and for bulk manufacturing. The company states adherence to international quality standards. [1]
Thermo Fisher Scientific provides ethinyl estradiol, often through its Acros Organics and Alfa Aesar brands, catering to research and development needs. [2]
Selleck Chemicals lists ethinyl estradiol as part of its portfolio of pharmaceutical compounds, indicating availability for research purposes. [3]
Steroids.com supplies ethinyl estradiol, focusing on hormonal compounds for pharmaceutical research and production. [4]
Cayman Chemical offers ethinyl estradiol, characterizing it as an analytical standard and research tool. [5]

The production of ethinyl estradiol involves complex multi-step synthesis, requiring specialized expertise in steroid chemistry. Manufacturers are typically located in regions with established pharmaceutical chemical industries, including North America, Europe, and Asia. Production capacity and lead times are critical factors for pharmaceutical companies sourcing these APIs for commercial drug product manufacturing.

What are the primary suppliers for Segesterone Acetate?

Segesterone acetate, also known as nestorone, is a progestin. Its synthesis and supply are handled by chemical manufacturers with expertise in steroid derivatives. Like ethinyl estradiol, segesterone acetate must meet rigorous pharmaceutical quality specifications.

Aprogenex GmbH is identified as a supplier of segesterone acetate, indicating a focus on specialized API production. [6]
Biogenomics offers segesterone acetate for research applications, highlighting its role in the scientific community. [7]
BOC Sciences lists segesterone acetate among its offerings for pharmaceutical development and manufacturing. [1]
Selleck Chemicals provides segesterone acetate, primarily for research and development purposes. [3]
Enamine Ltd., a supplier of building blocks and screening compounds, lists segesterone acetate, suggesting its availability within the broader chemical supply chain. [8]

The manufacturing process for segesterone acetate involves controlled chemical reactions to ensure the correct stereochemistry and purity required for its use in pharmaceutical formulations. Companies involved in its production often engage in custom synthesis or operate dedicated production lines to maintain quality and regulatory compliance.

What are the regulatory considerations for API suppliers?

Suppliers of ethinyl estradiol and segesterone acetate must adhere to a comprehensive set of regulations to ensure the safety, efficacy, and quality of the APIs they produce. These regulations are enforced by national and international health authorities.

Good Manufacturing Practices (GMP): Suppliers must operate under current GMP guidelines, as stipulated by regulatory bodies like the FDA (21 CFR Parts 210 and 211) and EMA. These guidelines cover all aspects of production, including facility design, equipment, personnel training, raw material control, process validation, and quality control testing.
Drug Master Files (DMFs): API manufacturers often submit DMFs to regulatory agencies. A DMF contains confidential detailed information about facilities, processes, or articles used in the manufacturing, processing, packaging, and storing of human drugs. This allows drug product manufacturers to reference the API information without directly accessing proprietary details.
ICH Guidelines: The International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) develops harmonized guidelines on quality, safety, efficacy, and multidisciplinary topics. Key ICH guidelines relevant to API suppliers include ICH Q7 (Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients) and ICH Q3A/B/C/D (Impurities).
Audits and Inspections: Regulatory agencies conduct periodic inspections of manufacturing facilities to ensure ongoing compliance with GMP. Pharmaceutical companies also conduct supplier audits as part of their vendor qualification process.
Quality Agreements: Formal quality agreements are established between API suppliers and drug product manufacturers. These agreements define the responsibilities of each party regarding quality, regulatory compliance, and product release.

Failure to comply with these regulations can result in significant consequences, including product recalls, import alerts, warning letters, and loss of market access. The pharmaceutical companies using these APIs bear the ultimate responsibility for ensuring their suppliers meet all applicable standards.

How does API sourcing impact drug product manufacturing timelines?

The availability and reliability of ethinyl estradiol and segesterone acetate suppliers directly impact the manufacturing timelines for combination contraceptive products. Delays in API procurement can lead to production halts and shortages of finished drug products.

Lead Times: Standard lead times for API orders can range from several weeks to several months, depending on the supplier's production schedule, order volume, and current inventory. Custom synthesis projects can extend these timelines considerably.
Supply Chain Disruptions: Geopolitical events, natural disasters, or unexpected manufacturing issues at a key supplier's facility can disrupt the supply chain. Pharmaceutical companies often mitigate this risk by qualifying multiple suppliers for critical APIs.
Quality Control and Release: The time required for quality control testing and batch release of APIs can add days or weeks to the overall manufacturing process. This includes analytical testing for purity, potency, and the absence of impurities.
Regulatory Filings: Changes in API suppliers or manufacturing sites often require updates to regulatory filings for the finished drug product. These updates need to be approved by regulatory authorities before implementation, adding to the overall project timeline.
Inventory Management: Pharmaceutical manufacturers must carefully manage their API inventory to ensure continuous production while minimizing holding costs. This involves forecasting demand and coordinating with suppliers to meet production schedules.

Strategic partnerships with reliable API suppliers and robust supply chain management are essential for efficient and timely drug product manufacturing. Companies that proactively manage these relationships can reduce risks and ensure consistent product availability.

What are the market trends for hormonal contraceptive APIs?

The market for ethinyl estradiol and segesterone acetate is influenced by global demographic trends, evolving healthcare policies, and the development of new contraceptive technologies.

Growing Demand in Emerging Markets: Increasing access to healthcare and family planning services in emerging economies is driving demand for oral contraceptives and other hormonal contraceptives.
Shift Towards Long-Acting Reversible Contraceptives (LARCs): While oral contraceptives remain dominant, there is a growing trend towards LARCs, such as implants and injections, which may influence the relative demand for specific API components over time. Segesterone acetate is utilized in a novel long-acting contraceptive implant.
Generic Competition: As patents expire for branded hormonal contraceptives, the market for generic versions of ethinyl estradiol and segesterone acetate increases. This can lead to price pressures but also expands access to more affordable options.
Regulatory Harmonization: Efforts towards global regulatory harmonization can streamline the approval process for new drug products and APIs, potentially accelerating market entry.
Focus on API Quality and Traceability: Regulatory scrutiny on API quality and supply chain transparency is increasing. This favors suppliers who can demonstrate robust quality management systems and reliable traceability from raw materials to finished API.
Advancements in Synthesis Technology: Ongoing research into more efficient and environmentally friendly synthesis routes for steroid hormones can impact production costs and supplier competitiveness.

The long-term outlook for ethinyl estradiol and segesterone acetate is tied to their continued role in established contraceptive products and their inclusion in new delivery systems. Supplier innovation and adherence to evolving quality and regulatory standards will be crucial for market participants.

Key Takeaways

Ethinyl estradiol and segesterone acetate are critical APIs for hormonal contraception, supplied by specialized chemical manufacturers adhering to strict GMP and regulatory standards.
Key suppliers include BOC Sciences, Thermo Fisher Scientific, Selleck Chemicals, and others, with a focus on API purity and compliance.
Regulatory considerations, including GMP, DMFs, ICH guidelines, and quality agreements, are paramount for API suppliers and drug product manufacturers.
API sourcing significantly impacts drug product manufacturing timelines through lead times, supply chain reliability, and quality control processes.
Market trends for these APIs are shaped by growing demand in emerging markets, shifts in contraceptive technology, generic competition, and increasing emphasis on API quality and traceability.

Frequently Asked Questions

What is the typical scale of production for ethinyl estradiol and segesterone acetate APIs? Production scales vary from kilogram quantities for research and development to metric tons for commercial drug manufacturing, depending on market demand and the specific product formulation.
Are there any specific environmental regulations that API manufacturers must comply with for these hormones? Yes, manufacturers must comply with local and international environmental regulations concerning chemical waste disposal, emissions, and solvent recovery, particularly due to the complex organic synthesis involved.
How do pharmaceutical companies vet and qualify new API suppliers? Vetting involves reviewing quality management systems, regulatory compliance history, conducting on-site audits, and performing sample testing to ensure the supplier meets stringent quality and reliability standards.
What is the shelf life of ethinyl estradiol and segesterone acetate APIs? The shelf life of these APIs typically ranges from two to five years when stored under recommended conditions, but this is determined by rigorous stability testing and stated by the manufacturer.
Can a single supplier provide both ethinyl estradiol and segesterone acetate? Some larger, diversified chemical manufacturers may offer both APIs, while smaller, specialized companies might focus on one or the other. Pharmaceutical companies often qualify multiple suppliers for each API to ensure supply chain security.

Citations

[1] BOC Sciences. (n.d.). Ethinyl Estradiol. Retrieved from https://www.bocsci.com/ethinyl-estradiol-cas-57-63-6.html and BOC Sciences. (n.d.). Segesterone Acetate. Retrieved from https://www.bocsci.com/segesterone-acetate-cas-3764-63-8.html

[2] Thermo Fisher Scientific. (n.d.). Ethinyl Estradiol. Retrieved from https://www.thermofisher.com/ (Specific product pages may require login or direct search.)

[3] Selleck Chemicals. (n.d.). Ethinyl Estradiol. Retrieved from https://www.selleckchem.com/products/ethinyl-estradiol.html and Selleck Chemicals. (n.d.). Segesterone Acetate. Retrieved from https://www.selleckchem.com/products/nestorone.html

[4] Steroids.com. (n.d.). Ethinyl Estradiol. Retrieved from https://www.steroids.com/ (Specific product availability may vary.)

[5] Cayman Chemical. (n.d.). Ethinyl Estradiol. Retrieved from https://www.caymanchem.com/product/17249

[6] Aprogenex GmbH. (n.d.). Segesterone Acetate. Retrieved from https://aprogenex.com/ (Specific product listings may require direct inquiry.)

[7] Biogenomics. (n.d.). Segesterone Acetate. Retrieved from https://www.biogenomics.com/ (Specific product availability may vary.)

[8] Enamine Ltd. (n.d.). Segesterone Acetate. Retrieved from https://enamine.net/ (Searchable compound database.)

Suppliers and packagers for generic pharmaceutical drug: ETHINYL ESTRADIOL; SEGESTERONE ACETATE