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509074-76-4

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509074-76-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 509074-76-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,9,0,7 and 4 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 509074-76:
(8*5)+(7*0)+(6*9)+(5*0)+(4*7)+(3*4)+(2*7)+(1*6)=154
154 % 10 = 4
So 509074-76-4 is a valid CAS Registry Number.

509074-76-4Relevant articles and documents

Synthesis, resolution, and absolute stereochemistry of (-)-blestriarene C

Hattori, Tetsutaro,Shimazumi, Yuhi,Goto, Hitoshi,Yamabe, Osamu,Morohashi, Naoya,Kawai, Wataru,Miyano, Sotaro

, p. 2099 - 2108 (2003)

A naturally occurring 1,1′-biphenanthrene, blestriarene C (1), was prepared in 13 steps and 30% overall yield. The key steps are the ester-mediated nucleophilic aromatic substitution on 2,6-ditert-butyl-4-methoxyphenyl 5-isopropoxy-2-methoxybenzoate (4) b

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