Cas 342793-71-9,(Z)-1-(3-Methoxy-phenyl)-hex-3-ene-2,5-dione

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Check Digit Verification of cas no

The CAS Registry Mumber 342793-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,2,7,9 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 342793-71:
(8*3)+(7*4)+(6*2)+(5*7)+(4*9)+(3*3)+(2*7)+(1*1)=159
159 % 10 = 9
So 342793-71-9 is a valid CAS Registry Number.

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342793-71-9Relevant academic research and scientific papers

Stereoselective synthesis of (E)-4-alkylidenecyclopent-2-en-1-ones by a tandem ring closure-Michael addition-elimination

Ballini, Roberta,Bosica, Giovanna,Fiorini, Dennis,Gil, Maria Victoria,Petrini, Marino

, p. 1265 - 1267 (2001)

(equation presented) Reaction of (Z)-1,4-diketones with various functionalized nitroalkanes in the presence of DBU gives 4-alkylidenecyclopent-2-en-1-ones with E selectivity. A cyclopentadienone intermediate is probably formed by intramolecular aldol cond

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