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3-O-methyl-17α-{4-[(pyrrolidin-1-yl)-azo]phenylethynyl}estra-1,3,5(10)-trien-3,17β-diol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

643764-59-4

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643764-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 643764-59-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,6 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 643764-59:
(8*6)+(7*4)+(6*3)+(5*7)+(4*6)+(3*4)+(2*5)+(1*9)=184
184 % 10 = 4
So 643764-59-4 is a valid CAS Registry Number.

643764-59-4Downstream Products

643764-59-4Relevant academic research and scientific papers

Synthesis and radiosynthesis of 17α -[p-(iodophenylethynyl)]estra-3,17β-diols

Wang, Jian,Watanabe, Masataka,Mataka, Shuntaro,Thiemann, Thies,Ribeiro Morais, Goreti,Roleira, Fernanda,Da Silva, Elisiario Tavares,Melo E Silva, Cristina

, p. 799 - 804 (2007/10/03)

Estrones have been subjected to an addition reaction with [(4-ethynylphenyl)azo]pyrrolidine to provide 17 α -{4-[(pyrrolidin-1-yl)-azo]phenylethynyl}estra-3,17 β-diols. A subsequent iodination with iodotrimethylsilane, produced in situ from chlorotrimethy

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