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70719-51-6

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70719-51-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70719-51-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,7,1 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70719-51:
(7*7)+(6*0)+(5*7)+(4*1)+(3*9)+(2*5)+(1*1)=126
126 % 10 = 6
So 70719-51-6 is a valid CAS Registry Number.

70719-51-6Relevant articles and documents

Enantioselective synthesis of the 3C-protease inhibitor (-)-thysanone by a Staunton-Weinreb annulation strategy

Sperry, Jonathan,Tsz, Ying Yuen,Brimble, Margaret A.

experimental part, p. 2561 - 2569 (2009/12/25)

The total synthesis of (-)-thysanone is described. The key step involves the addition of an o-toluate anion to a lactone to create the naphthopyran framework (Staunton-Weinreb annulation). This synthesis further confirms the absolute stereochemistry of th

ortho-Toluate Carboanion Chemistry: Sulfenylation and Selenation

Hauser, Frank M.,Rhee, Richard P.,Prasanna, Subbarao,Weinreb, Steven M.,Dodd, John H.

, p. 72 - 74 (2007/10/02)

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