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57-63-6

57-63-6 Structure

57-63-6 Structure
IdentificationMore
[Name]

Ethynyl estradiol
[CAS]

57-63-6
[Synonyms]

1,3,5(10)-ESTRATRIEN-17-ALPHA-ETHYNYL-3,17-BETA-DIOL
17a-ethynyl-1,3,5(10)-estratriene-3,17b-diol
17 A-ETHYNYLESTRADIOL
17ALPHA-ETHINYLESTRADIOL
17-ALPHA-ETHYNLESTRADIOL
17ALPHA-ETHYNYL-1,3,5[10]-ESTRATRIENE-3,17BETA-DIOL
17ALPHA-ETHYNYL-DELTA1,3,5(10)-ESTRA-TRIENE-3,17BETA-DIOL
17ALPHA-ETHYNYLESTRADIOL
19-NOR-1,3,5[10],17ALPHA-PREGNATRIEN-20-YNE-3,17-DIOL
19-NORPREGNA-1,3,5(10)-TRIEN-20-YNE-3,17ALPHA-DIOL
ACETENYL ESTRADIOL
ETHINYL ESTRADIOL
ETHYNYLESTRADIOL
LYNORAL
NEO-ESTRONE
NOVESTROL
(17-alpha)-19-norpregna-1,3,5(10)-trien-20-yne-3,17,diol
17-alpha-ethinyl-17-beta-estradiol
17alpha-Ethinyl-17beta-estradiol
17-alpha-ethinyl-3,17-dihydroxy-delta(sup1,3,5)-estratriene
[EINECS(EC#)]

200-342-2
[Molecular Formula]

C20H24O2
[MDL Number]

MFCD00003690
[Molecular Weight]

296.4
[MOL File]

57-63-6.mol
Chemical PropertiesBack Directory
[Appearance]

Estradiol, 17-β-is an odorless white to yellow crystalline substance.
[Appearance]

Ethinylestradiol is a white to creamy-white powder. Odorless.
[Appearance]

Off-White to Light-Yellow Crystalline Powder
[mp ]

182-183 °C(lit.)
[refractive index ]

-30 ° (C=0.4, Pyridine)
[solubility ]

ethanol: 50 mg/mL, clear, slightly yellow
[Usage]

A metabolite of 17a-Ethynylestradiol
[Usage]

A synthetic steroid with high oral estrogenic potency
[Merck ]

3734
[CAS DataBase Reference]

57-63-6(CAS DataBase Reference)
[NIST Chemistry Reference]

Ethinyl estradiol(57-63-6)
[EPA Substance Registry System]

57-63-6(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

T
[Risk Statements ]

R45:May cause cancer.
R22:Harmful if swallowed.
[Safety Statements ]

S53:Avoid exposure-obtain special instruction before use .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[WGK Germany ]

3
[RTECS ]

RC8925000
[F ]

8
[HS Code ]

29372300
[Safety Profile]

Confirmed carcinogen with experimental carcinogenic, tumorigenic, and neoplastigenic data. Poison by intraperitoneal route. Moderately toxic by ingestion. Human systemic effects by ingestion: glandular effects. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTRADIOL
[Hazardous Substances Data]

57-63-6(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Tetrahydrofuran-->2-Methyl-1-propanol-->1,3,5(10)-Estratrien-3-ol-17-one
Hazard InformationBack Directory
[General Description]

Fine white to creamy white powder. A synthetic steroid. Used in combination with progestogen as an oral contraceptive.
[Reactivity Profile]

ETHINYLESTRADIOL(57-63-6) may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to generate gaseous hydrogen.
[Air & Water Reactions]

Air and light sensitive . Insoluble in water.
[Health Hazard]

ACUTE/CHRONIC HAZARDS: When heated to decomposition this compound emits acrid smoke and fumes.
[Potential Exposure]

The working environment may be contaminated during sex hormone manufacture, especially during the extraction and purification of natural steroid hormones; grinding of raw materials; handling of powdered products and recrystallization. Airborne particles of sex hormones may be absorbed through the skin, ingested or inhaled. Enteric absorption results in quick inactivation of sex hormones in the liver. The rate of inactivation is decreased for the oral, alkylated steroid hormones (methyl testosterone, anabolic steroids, etc.). Sex hormones may accumulate and reach relatively high levels even if their absorption is intermittent. Consequently, repeated absorption of small amounts may be detrimental to health. Intoxication by sex hormones may occur in almost all the exposed workers if preventive measures are not taken. The effect in the industrial sector is more successful than the agricultural one (chemical caponizing of cockerels by stilbestrol implants and incorporation of estrogens in feed for body weight gain promotion in beef cattle), where measures taken are summary and the number of cases of intoxication is consequently bigger
[First aid]

Skin Contact: Flood all areas of body that have contacted the substance with water. Don’t wait to remove contaminated clothing; do it under the water stream. Use soap to help assure removal. Isolate contaminated clothing when removed to prevent contact by others. Eye Contact: Remove any contact lenses at once. Immediately flush eyes well with copious quantities of water or normal saline for at least 2030 minutes. Seek medical attention. Inhalation: Leave contaminated area immediately; breathe fresh air. Proper respiratory protection must be supplied to any rescuers. If coughing, difficult breathing or any other symptoms develop, seek medical attention at once, even if symptoms develop many hours after exposure. Ingestion: Contact a physician, hospital or poison center at once. If the victim is unconscious or convulsing, do not induce vomiting or give anything by mouth. Assure that the patient’s airway is open and lay him on his side with his head lower than his body and transport immediately to a medical facility. If conscious and not convulsion, give a glass of water to dilute the substance. Vomiting should not be induced without a physician’s advice
[Fire Hazard]

The flash point data for this compound are not available. ETHINYLESTRADIOL is probably combustible.
[Shipping]

UN3249 Medicine, solid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials
[Incompatibilities]

May react exothermically with reducing agents to generate flammable gaseous hydrogen. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides.
[Waste Disposal]

It is inappropriate and possibly dangerous to the environment to dispose of expired or waste drugs and pharmaceuticals by flushing them down the toilet or discarding them to the trash. Household quantities of expired or waste pharmaceuticals may be mixed with wet cat litter or coffee grounds, double-bagged in plastic, discard in trash. Larger quantities shall carefully take into consideration applicable DEA, EPA, and FDA regulations. If possible return the pharmaceutical to the manufacturer for proper disposal being careful to properly label and securely package the material. Alternatively, the waste pharmaceutical shall be labeled, securely packaged and transported by a state licensed medical waste contractor to dispose by burial in a licensed hazardous or toxic waste landfill or incinerator
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol(57-63-6).msds
Questions And AnswerBack Directory
[Description]

Ethynyl estradiol (EE) is a synthetic form of estrogen that is majorly employed in numerous hormonal contraceptives in combination with progestins. Occasionally, it is also used as a constituent of menopausal hormone therapy with combination with progestins for treating menopausal symptoms. Previously, the drug was used solely for numerous indications such as treatment of prostate cancer and gynecological disorders.
Ethynyl estradiol is a semisynthetic alkylated estradiol with a 17-alpha-ethinyl substitution. It is normally administred orally and is marketed mostly as a combination oral contraceptive under various brand names such as Alesse, Tri-cyclen, Yasmin, and Triphasil. A black box warning is normally labelled on the packaging that states that the drug should not be used in smoking women who are over 35 years old as it can lead to increased risk of serious cardiovascular side effects.
[History]

Ethynyl estradiol was first developed in 1930 and officially introduced for medical used in 1943. In the 1960s, the drug was widely used in birth control pills. EE is currently found in most combined forms of birth control pills, which makes it one of the most used estrogens.
[Indications]

Ethynyl estradiol is used for treatment of moderate to severe vasomotor symptoms such as night sweats, hot flashes, and flushing that are associated with the menopause, prostatic carcinoma-palliative therapy of advanced disease, female hypogonadism, as emergency contraceptive, breast cancer, and as an oral contraceptive.
[Pharmacodynamics]

Ethynyl estradiol is a synthetic derivative of the natural estrogen estradiol. The drug is one of two widely used in oral contraceptive pills. Mestranol is the other drug that is normally converted to ethinyl estradiol before it becomes biologically active. EE is used together with norethindrone as an oral contraceptive agent.
[Mechanism of Action]

The estrogen in the drug diffuse into their target cells before interacting with a protein receptor. Notably, target cells include the female reproductive tract, the hypothalamus, the mammary gland, and the pituitary. Estrogens act by increasing the hepatic synthesis of thyroid binding globulin (TBG), sex hormone binding globulin (SHBG) as well as other serum proteins. It also acts by suppressing follicle-stimulating hormone (FSH) from anterior pituitary. All these activities are initiated by fist binding to the estrogen receptors. The hypothalamic-pituitary system is suppressed by the combination of an estrogen with a progestin, which decreases the secretion of gonadorotropin-releasing hormone (GnRH).
[Medical Uses]

Ethnynyl estradiol is majorly used to control pregnancy after sex as a contraception in combined oral contraceptives (COC), which are also referred to as birth control. EE is not only used in preventing pregnancy but is also employed in the treatment of absence of menstruation, acne, as well as symptoms during menstruation. It majorly works by preventing ovulation (the release of an egg) during the menstrual cycle. Further, it acts by making the vaginal fluid thicker to help in preventing sperm from fertilizing the released egg. It also changes the lining of the uterus to prevent attachment of a fertilized egg. EE also works by making the menstruation cycle more regular, decreasing blood loss and painful periods, and decreasing the risk of ovarian cysts.
EE is also used as menopausal hormone therapy (HRT) which has numerous benefits such as vaginal itching, vaginal dryness (which normally causes pain during sexual intercourse), and depressed mood. Previously, it was used as a constituent of feminizing hormone therapy for transgender women; however, the use of estradiol has largely superseded it in this therapy. The drug can also be used in preventing osteoporosis and in treating hypogonadism in women and has been used as palliative care for breast cancer in women and prostate cancer in men.
[Contraindications]

Ethnynyl estradiol should not be prescribed to individuals with history of susceptibility to venous or arterial thrombosis (blood clots) as it can lead to increased cardiovascular problems such as myocardial infarction, venous thromboembolism, and ischemic stroke. As such, it women with acute deep vein thrombosis or pulmonary embolism, any vascular disease history of DVT/PE, and complicated valvular heart disease are not advised to take the drug.
[Side Effects]

The side effects of EE include vomiting, nausea, headache, tenderness of the breast, abdominal cramps/bloating, swelling of the feet/ankles, and change in weight. In case of severe effects, one should immediately contact the doctor. EE can also cause irregular periods, which is considered normal.
[Precautions]

Before taking EE, it is important to inform the doctor or pharmacist if you allergic to the drug or to any other estrogens such as mestranol. It is also important to inform the doctor if one has a medical history of blood clots, for instance in the eyes, legs, and lungs. The medication can also affect blood sugar levels if one is diabetic. However, it is important to monitor the blood sugar levels and share it with the doctor in case one is using the drug.
[Interactions]

Drug interactions may change how EE works or might increase its side effects. Products that can interact with the drug include aromatase inhibitors (such as exemestane and anastrozole), tizanidine, tamoxifen, and tranexamic. It can also interact with certain combination products that are normally used to treat chronic hepatitis C. some drugs interact with EE by decreasing the amount of the drug in the body.
Spectrum DetailBack Directory
[Spectrum Detail]

Ethynyl estradiol(57-63-6)13CNMR
Ethynyl estradiol(57-63-6)IR1
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

57-63-6(sigmaaldrich)
[TCI AMERICA]

Ethynylestradiol,>98.0%(T)(57-63-6)
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