5218-51-9 Usage
Description
(17beta)-17-hydroxyestra-5(10),9(11)-dien-3-one, also known as 17β-hydroxyestradiol, is a synthetic form of the natural female hormone estrogen. It is a derivative of estradiol, the primary female sex hormone, and is characterized by its ability to mimic the effects of estrogen in the body.
Used in Hormone Replacement Therapy:
(17beta)-17-hydroxyestra-5(10),9(11)-dien-3-one is used as a hormone supplement for treating symptoms of menopause, such as hot flashes and vaginal dryness. It helps to alleviate these symptoms by supplementing the body's natural estrogen levels, which decrease during menopause.
Used in Birth Control Pills:
(17beta)-17-hydroxyestra-5(10),9(11)-dien-3-one is used as a component in some birth control pills to prevent pregnancy. It works by suppressing ovulation and altering the cervical mucus to prevent sperm from reaching the egg.
Used in Cancer Treatment:
(17beta)-17-hydroxyestra-5(10),9(11)-dien-3-one is used as a treatment for certain forms of breast cancer. It can help to slow or stop the growth of cancer cells by interfering with the hormone's effects on the cells.
It is important for individuals to consult with a healthcare professional before using (17beta)-17-hydroxyestra-5(10),9(11)-dien-3-one, as it may have potential side effects and interactions with other medications.
Check Digit Verification of cas no
The CAS Registry Mumber 5218-51-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,1 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5218-51:
(6*5)+(5*2)+(4*1)+(3*8)+(2*5)+(1*1)=79
79 % 10 = 9
So 5218-51-9 is a valid CAS Registry Number.
5218-51-9Relevant articles and documents
Williams et al.
, p. 102,104 (1977)
Method for preparing pufferone acetate (by machine translation)
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Paragraph 0047-0054, (2019/11/21)
The invention discloses a method for preparing pufferone acetate, and belongs to the technical field of preparation and processing of hormone drugs. The process is carried out 3 - with ethylenedioxy estra-Δ. 5,10 , Δ9,11 -17-ketone is a starting raw material, and the preparation of the 3 botanerone acetate is carried out by 17 reducing the position of the ketone as an alcohol, hydrolyzing the position of the furanone, the 17 oxidative dehydrogenation, and the alcohol acetylation. The method has the advantages of cheap and easily available raw materials, simple reaction control, few byproducts, easy purification and high total yield, has extremely high competitiveness in production cost and operability, is suitable for industrial large-scale production and has good economic benefits. (by machine translation)