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Postion:Product Catalog >API>Hormones and the Endocrine System>Estrogen and progestin drugs>Ethynyl estradiol
Ethynyl estradiol
  • Ethynyl estradiol

Ethynyl estradiol NEW

Price $200 $1
Package 1KG 100KG
Min. Order: 1KG
Update Time: 2026-07-09

Product Details

Product Name: Ethynyl estradiol CAS No.: 57-63-6
Min. Order: 1KG Purity: 99%, 99.5% Sublimated
Supply Ability: g-kg-tons, free sample is available Release date: 2026/07/09

1. Materials information

Use of Ethynyl estradiol


Ethynyl estradiol is an orally bio-active estrogen used in almost all modern formulations of combined oral contraceptive pills.Target: Estrogen ReceptorEthinyl estradiol (EE), also sometimes written as ethinylestradiol, ethynyl estradiol, or ethinyl estradiol, is a derivative of 17β-estradiol (E2), the major endogenous estrogen in humans. EE is an orally bioactive estrogen used in many formulations of combined oral contraceptive pills. It is one of the most commonly used medications for this purpose. Transdermal ethinyl estradiol carries a greater risk of clot formation and venous thromboembolism than 17 beta estradiol, which some have theorized to be related to different amounts of hepatic metabolism after absorption. The same contraindications and precautions apply for EE as with other estrogen medications.Estinyl was a preparation of EE alone that was used for the management of menopausal symptoms and female hypogonadism. EE is released into the environment as a xenoestrogen from the urine and feces of people who take it as a medication. The major concern with unopposed estrogen is of endometrial cancer. As such, the medication is generally prescribed with progesterone in the setting of birth control. The first orally active semisynthetic steroidal estrogen, EE (17α-ethynylestradiol), the 17α-ethynyl analog of E2, was synthesized in 1938 by Hans Herloff Inhoffen and Walter Hohlweg at Schering AG in Berlin.

Chemical & Physical Properties

Density1.2±0.1 g/cm3
Boiling Point457.2±45.0 °C at 760 mmHg
Melting Point182-183 °C(lit.)
Molecular FormulaC20H24O2
Molecular Weight296.403
Flash Point211.2±23.3 °C
Exact Mass296.177643
PSA40.46000
LogP4.52
Vapour Pressure0.0±1.2 mmHg at 25°C
Index of Refraction1.624
Storage condition-20°C Freezer
Water Solubilityethanol: 50 mg/mL, clear, slightly yellow


2. Packaging of materials

  • For powders: normal is 25kgs/Drum or bag, or larger/smaller package as request.

  • For liquids: normal 25kgs/drum, 180-300kgs/bucket, or IBC, determined by the nature of the product. 

                     Or smaller package 1kg/bottle, 10kgs/bottle as request. 


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3. Shipping & Delivery

  • By Express

Provide door to door service

Suitable for goods under 50kg

Delivery: 3-7 days

Cost: low cost

Article illustration


  • By Air

Provide airport to airport service

Suitable for goods over 50kg

Delivery: 3-14 days

Cost: high cost


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  • By Sea

Provide seaport to seaport service

Suitable for goods over 100kg

Delivery: 2-45 days

Cost: low cost

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4. Contact information

For more details, pls contact us freely.

Email address: elin@fdachem.com

Mob: 86 13613820652 

WhatsApp/Skype/Wechat/LINE: 86 13613820652


Company Profile Introduction

Henan Fengda Chemical Co., Ltd. a research customization and supplier specializing in PPb grade ultra-high purity electronic chemicals, deeply rooted in the semiconductor and new display fields, committed to providing the most core and purest chemical components for photoresist and high-end display materials. We provide key monomers for KrF/ArF photoresist, photoacid generators (PAGs), photoacids, and etching solution raw materials, providing cornerstone materials for advanced process photoresist formulations; We take ICP-MS full spectrum metal impurity analysis as the quality cornerstone and provide ICP-MS metal impurity COA reports to meet the strict industry requirements for PPb grade electronic chemical materials. The COA report contains important data such as NA, Mg, K, Ca, Al, Cr, Fe, Ni, Cu, Zn, Pb, Ag, etc. To provide customers with pure and reliable source assurance for cutting-edge research and stable production.

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