799-43-9 Usage
Description
(±)-13-ethyl-3-methoxy-18,19-dinor-17alpha-pregna-2,5(10)-dien-20-yn-17-ol is a synthetic steroid compound derived from the synthesis of Levonorgestrel, an oral contraceptive. It is characterized by its unique molecular structure, featuring a 13-ethyl group, a 3-methoxy group, and the absence of the 18 and 19 carbon atoms in the steroid nucleus. (±)-13-ethyl-3-methoxy-18,19-dinor-17alpha-pregna-2,5(10)-dien-20-yn-17-ol is used as an intermediate in the synthesis of other steroid hormones.
Uses
Used in Pharmaceutical Industry:
(±)-13-ethyl-3-methoxy-18,19-dinor-17alpha-pregna-2,5(10)-dien-20-yn-17-ol is used as a key intermediate in the synthesis of various steroid hormones for pharmaceutical applications. Its unique structure allows for the production of a wide range of steroidal compounds with diverse therapeutic properties, such as contraceptives, anti-inflammatory agents, and hormone replacement therapies.
Used in Contraceptive Development:
As an impurity from the synthesis of Levonorgestrel, (±)-13-ethyl-3-methoxy-18,19-dinor-17alpha-pregna-2,5(10)-dien-20-yn-17-ol plays a role in the development and production of oral contraceptives. Levonorgestrel is a widely used progestin hormone that helps prevent ovulation and fertilization, making it an essential component in birth control pills.
Used in Hormone Replacement Therapy:
(±)-13-ethyl-3-methoxy-18,19-dinor-17alpha-pregna-2,5(10)-dien-20-yn-17-ol is also used as a precursor in the synthesis of hormone replacement therapies. These therapies are designed to alleviate symptoms associated with menopause, such as hot flashes, night sweats, and vaginal dryness, by providing the body with essential hormones.
Check Digit Verification of cas no
The CAS Registry Mumber 799-43-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 799-43:
(5*7)+(4*9)+(3*9)+(2*4)+(1*3)=109
109 % 10 = 9
So 799-43-9 is a valid CAS Registry Number.
799-43-9Relevant articles and documents
Preparation method of levonorgestrel
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Paragraph 0025-0026; 0028-0029; 0031-0032, (2020/09/20)
The invention discloses a preparation method of levonorgestrel, and belongs to the technical field of medicine preparation and processing. According to the method, 18-methylestra-2,5(10)-diene-3-methoxy-17-ketone is used as an initial raw material, and the levonorgestrel disclosed by the invention is prepared by virtue of two steps of ethynylation and hydrolysis. According to the preparation method of the levonorgestrel, the defects of a traditional process are overcome and reaction conditions are mild; the method is high in overall conversion rate, easy and convenient to operate, suitable forindustrial production and wide in market prospect.
