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237736-54-8

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237736-54-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 237736-54-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,7,7,3 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 237736-54:
(8*2)+(7*3)+(6*7)+(5*7)+(4*3)+(3*6)+(2*5)+(1*4)=158
158 % 10 = 8
So 237736-54-8 is a valid CAS Registry Number.

237736-54-8Relevant articles and documents

An expeditious synthesis of vibsanol, a benzofuran-type lignan from Viburnum awabuki

Sakai, Atsushi,Aoyama, Toyohiko,Shioiri, Takayuki

, p. 643 - 659 (2007/10/03)

Vibsanol (1), a benzofuran-type lignan isolated from the wood of Viburnum awabuki (Caprifoliaceae), was synthesized from the readily available vanillin; the key step is a tandem cyclization of o-tert- butyldimethylsiloxydiarylalkyne (2) with tetrabutylammonium fluoride and excess paraformaldehyde.

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