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516493-75-7

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516493-75-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 516493-75-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,6,4,9 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 516493-75:
(8*5)+(7*1)+(6*6)+(5*4)+(4*9)+(3*3)+(2*7)+(1*5)=167
167 % 10 = 7
So 516493-75-7 is a valid CAS Registry Number.

516493-75-7Relevant articles and documents

SmI2-mediated 3-exo-trig cyclisation of δ-oxo-α, β-unsaturated esters to cyclopropanols and derivatives

Bezzenine-Lafollée, Sophie,Guibé, Francois,Villar, Hélène,Zriba, Riadh

, p. 6931 - 6944 (2007/10/03)

In the presence of samarium diiodide and a proton source, δ-oxo-γ,γ-disubstituted-α,β-unsaturated esters of general formula R-CO-C(R′,R′)-CHCH-CO2Bn readily cyclise to trans-cyclopropanol products and/or lactones derived from the cis isomers. F

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