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3,8-bis(bromomethyl)-3,8-di-o-tolyl-2,7-dioxaspiro[4.4]nonane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1643771-84-9

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1643771-84-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1643771-84-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,7,7 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1643771-84:
(9*1)+(8*6)+(7*4)+(6*3)+(5*7)+(4*7)+(3*1)+(2*8)+(1*4)=189
189 % 10 = 9
So 1643771-84-9 is a valid CAS Registry Number.

1643771-84-9Downstream Products

1643771-84-9Relevant academic research and scientific papers

Desymmetrization of diolefinic diols by enantioselective amino-thiocarbamate-catalyzed bromoetherification: Synthesis of chiral spirocycles

Tay, Daniel Weiliang,Leung, Gulice Y. C.,Yeung, Ying-Yeung

, p. 5161 - 5164 (2014/05/20)

A facile, efficient, and highly diastereo- and enantioselective bromoetherification of diolefinic diols has been developed using an amino-thiocarbamate catalyst. Further manipulations of the bromoether products enabled entry into a new class of spirocycle

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