17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether
17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether Basic information
- Product Name:
- 17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether
- Synonyms:
-
- Ethynylestradiol 3-methyl ether,97%
- 17alpha-19-Norpregna-1,3,5(10)-trien-20-yn
- MESTRANOL
- 19-Nor-17alpha-pregna-1,3,5(10)-trien-20-yn-17-ol, 3-methoxy-
- 19-nor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol,3-methoxy-
- 19-Norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-methoxy-, (17alpha)-
- 3,17-beta-Dihydroxy-17-alpha-ethynyl-1,3,5(10)-estratriene-3-methyl ether
- 3,17-beta-dihydroxy-17-alpha-ethynyl-1,3,5(10)-estratriene-3-methylether
- CAS:
- 72-33-3
- MF:
- C21H26O2
- MW:
- 310.43
- EINECS:
- 200-777-8
- Product Categories:
-
- Intermediates & Fine Chemicals
- Pharmaceuticals
- Steroids
- Acetylenes
- Biochemistry
- MAXOLON
- Functionalized Acetylenes
- Hydroxysteroids
- Mol File:
- 72-33-3.mol
17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether Chemical Properties
- Melting point:
- 153-155 °C(lit.)
- Boiling point:
- 390.58°C (rough estimate)
- alpha
- +2~+8°(D/20℃)(c=1, 1,4-dioxane)
- Density
- 1.0865 (rough estimate)
- refractive index
- 1.4900 (estimate)
- storage temp.
- Sealed in dry,2-8°C
- solubility
- Acetonitrile: 1 mg/ml; Ethanol: 1 mg/ml; Methanol: 1 mg/ml
- form
- Solid
- pka
- 13.10±0.40(Predicted)
- color
- White to off-white
- optical activity
- [α]15/D +3°, c = 2 in dioxane
- Merck
- 5917
- BRN
- 2625905
- CAS DataBase Reference
- 72-33-3(CAS DataBase Reference)
- NIST Chemistry Reference
- Mestranol(72-33-3)
- EPA Substance Registry System
- Mestranol (72-33-3)
Safety Information
- Hazard Codes
- Xn
- Risk Statements
- 36/37/38-40-48-68
- Safety Statements
- 22-26-36/37/39-45-36/37
- WGK Germany
- 3
- RTECS
- RC8960000
- HS Code
- 29372900
- Hazardous Substances Data
- 72-33-3(Hazardous Substances Data)
- Toxicity
- LD50 oral in rat: > 10gm/kg
MSDS
- Language:English Provider:17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether
- Language:English Provider:ACROS
- Language:English Provider:SigmaAldrich
17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether Usage And Synthesis
Chemical Properties
Crystalline Solid
Originator
Enovid ,Searle ,US ,1957
Uses
Pharmacological estrogen molecule
Uses
Mestranol is an orally active estrogenic steroid. It was the estrogen used in many of the first oral contraceptives
Uses
antiemetic
Definition
ChEBI: A terminal acetylenic compound that is (17alpha)-17-ethynylestra-1(10),2,4-triene substituted by a methoxy group at position 3 and a hydroxy group at position 17.
Manufacturing Process
A stirred solution of 120 parts of 3-methoxy-δ1,3,5-estratrien-17-one in 2,600 parts of anhydrous toluene and 4,300 parts of anhydrous ether is saturated with a slow stream of acetylene. In the course of 30 minutes there is added a solution of 120 parts of potassium tert-amylate in 2,800 parts of anhydrous tert-pentanol. The passage of acetylene and stirring are continued for an additional 5 hours after which the reaction mixture is washed 5 times with 3,000-part portions of saturated ammonium chloride solution and then with water. It is then dried over anhydrous sodium sulfate and concentrated to dryness under vacuum. The residue is recrystallized from methanol. The 3- methoxy-17-ethynyl-δ1,3,5 estratrien-17-ol thus obtained melts at about 143° to 146°C. A further recrystallization from acetone yields crystals melting at about 150° to 151°C.
Therapeutic Function
Estrogen
Safety Profile
Confirmed carcinogen with experimental. neoplastigenic, tumorigenic, and teratogenic data. Moderately toxic by subcutaneous route. Human reproductive effects by ingestion: changes in ovaries and fallopian tubes, ferthty effects. Experimental reproductive effects. Mutation data reported. An FDA proprietary drug. A steroid used in oral contraceptives. When heated to decomposition it emits acrid smoke and irritating fumes.
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