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219843-76-2

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219843-76-2 Usage

Uses

5,6-Dihydroabiraterone Acetate is used in the preparation and activity of abirateron metabolites, redirecting abiraterone metabolite to fine-tune prostate cancer anti-androgen therapy.

Check Digit Verification of cas no

The CAS Registry Mumber 219843-76-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,8,4 and 3 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 219843-76:
(8*2)+(7*1)+(6*9)+(5*8)+(4*4)+(3*3)+(2*7)+(1*6)=162
162 % 10 = 2
So 219843-76-2 is a valid CAS Registry Number.

219843-76-2Relevant articles and documents

Abiraterone acetate reducing impurity and preparation method thereof

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, (2017/10/22)

The invention discloses an abiraterone acetate reducing impurity and a preparation method thereof. The impurity is 17-(3-pyridyl) androstane-3 beta-acetoxyl. The preparation method of the impurity includes the steps: taking dehydroepiandrosterone as a starting material; performing catalytic hydrogenation by palladium carbon to obtain (3 beta)-3-hydroxy-17-sterone; performing reaction by hydrazine hydrate to obtain 17-hydrazono-androstane-3 beta-alcohol; performing iodine substitution to obtain 17-iodine-androstane-3 beta-alcohol; reacting the 17-iodine-androstane-3 beta-alcohol with borane reagents under palladium catalysis to obtain 17-(3-pyridyl) androstane-3 beta-alcohol; performing acetic anhydride acetylation to obtain the abiraterone acetate reducing impurity 17-(3-pyridyl) androstane-3 beta-acetoxyl.

ALTERING STEROID METABOLISM FOR TREATMENT OF STEROID-DEPENDENT DISEASE

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Page/Page column 42, (2016/09/26)

A method of treating steroid-dependent disease such as prostate cancer in a subject is described that includes administering a therapeutically effective amount a CYP17A inhibitor and an effective amount of a 5- -reductase inhibitor to the subject.

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