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42982-49-0

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  • 19-Norpregna-5(10),9(11)-diene-3,20-dione, 17-hydroxy-, cyclic 3-(1,2-ethanediyl acetal)

    Cas No: 42982-49-0

  • USD $ 1.2-5.0 / Kiloliter

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  • 1-[(8S,13S,14S,17R)-17-HYDROXY-13-METHYL-SPIRO[1,2,4,6,7,8,12,14, 15,16-DECAHYDROCYCLOPENTA[A]PHENANTHRENE-3,2'-1,3-DIOXOLANE]-17-Y L]ETHANONE

    Cas No: 42982-49-0

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  • 1 Gram

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  • Afine Chemicals Limited
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42982-49-0 Usage

General Description

The chemical "19-Norpregna-5(10),9(11)-diene-3,20-dione, 17-hydroxy-, cyclic 3-(1,2-ethanediyl acetal)" is a synthetic progestin compound that is derived from the hormone progesterone. It is commonly used as an active ingredient in hormonal contraceptives, such as birth control pills and contraceptive patches. This chemical works by inhibiting ovulation and altering the cervical mucus and uterine lining to prevent pregnancy. It may also be used to regulate menstrual cycles and treat menstrual disorders, as well as in hormone replacement therapy for menopausal women. However,

Check Digit Verification of cas no

The CAS Registry Mumber 42982-49-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,9,8 and 2 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 42982-49:
(7*4)+(6*2)+(5*9)+(4*8)+(3*2)+(2*4)+(1*9)=140
140 % 10 = 0
So 42982-49-0 is a valid CAS Registry Number.

42982-49-0Relevant articles and documents

Environmentally-friendly synthesis method of ulipristal acetate intermediate and ulipristal acetate

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Paragraph 0027; 0036-0041, (2020/07/14)

The invention provides a method for environmentally-friendly synthesis of an ulipristal acetate intermediate and ulipristal acetate. According to the invention, a compound 2 is used as a starting rawmaterial, and reacts with acetylene in a solvent to form an alkynyl alcohol compound intermediate 3, a hydration reaction is performed with water under the catalysis of an ionic liquid and CO2 to obtain an intermediate 4, the intermediate 4 is subjected to carbonyl protection to obtain an intermediate 5, and the intermediate 5 is subjected to double bond epoxidation, a Grignard reaction, decarbonylation protection and acetylation to obtain the high-purity ulipristal acetate. The method is environment-friendly, convenient in steps, mild in conditions, low in cost, easy to amplify and suitable for industrial production, and the solvent can be recycled.

20-ketofatty -11β-arylpropionic agonists or antagonists and having its deriv. nonsteroid antiandrogenic characteristics

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, (2019/05/08)

The invention is directed to a novel class of steroids which exhibit potent antiprogestational activity.

17β-acyl-17α-propynyl-11β-(cyclic amino) aryl steroids and their derivatives having antagonist hormonal properties

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Page/Page column 20, (2008/06/13)

The invention is directed to a novel class of 17β-acyl-17α-propynyl steroids which exhibit potent antiprogestational activity.

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