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337974-58-0

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337974-58-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 337974-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,7,9,7 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 337974-58:
(8*3)+(7*3)+(6*7)+(5*9)+(4*7)+(3*4)+(2*5)+(1*8)=190
190 % 10 = 0
So 337974-58-0 is a valid CAS Registry Number.

337974-58-0Relevant articles and documents

4-[(4'-Methylphenyl)sulfonyl]-1-(trophenylphosphoranylidene)-2-butanone as a New Four-Carbon Synthon for Substituted Divinyl Ketones

Barco, Achille,Benetti, Simonetta,Risi, Carmela De,Marchetti, Paolo,Pollini, Gian Piero,Zanirato, Vinicio

, p. 975 - 986 (2007/10/03)

The title compound and the corresponding anion have been conveniently used as precursors of substituted divinylketones in both carbo- and heterocyclization reactions in one-pot, three-step sequences leading to a wide variety of substituted carbo- and heterocyclic ring systems, as well as to multifunctionalized linear carbon frameworks. The compounds generated through the use of this multi-coupling reagent represent useful synthons for the construction of natural compounds including (+/-)-epibatidine, (-)-anabasine and (+/-)-pyrenophorin.

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