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769957-43-9

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769957-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 769957-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,9,9,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 769957-43:
(8*7)+(7*6)+(6*9)+(5*9)+(4*5)+(3*7)+(2*4)+(1*3)=249
249 % 10 = 9
So 769957-43-9 is a valid CAS Registry Number.

769957-43-9Upstream product

769957-43-9Relevant academic research and scientific papers

Total synthesis of (+)-preussin: Control of the stereogenic centers by enantioselective allyltitanations

Canova, Sophie,Bellosta, Véronique,Cossy, Janine

, p. 1811 - 1813 (2004)

(+)-Preussin was synthesized in ten steps with an overall yield of 6.4% from phenylacetaldehyde. The three stereogenic centers were controlled by enantioselective allyltitanations of aldehydes.

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