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93512-05-1

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93512-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93512-05-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,5,1 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 93512-05:
(7*9)+(6*3)+(5*5)+(4*1)+(3*2)+(2*0)+(1*5)=121
121 % 10 = 1
So 93512-05-1 is a valid CAS Registry Number.

93512-05-1Relevant articles and documents

A new annulation method. Total syntheses of the sesquiterpenoids (+/-)-chiloscyphone and (+/-)-6-epi-chiloscyphone

Piers, Edward,Tse, Hoi Lun Allan

, p. 983 - 994 (2007/10/02)

The efficacy of a new annulation method, developed for the construction of functionalized bicyclic compounds, is illustrated by conversion of the β-keto esters 18 and 19 into the bicyclonon-1-enes 33 and 34, respectively, and by transformation of 2-methoxycarbonylcyclopentanone (20) into the bicyclonon-6-ene 38 and the bicyclodec-7-enes 48 and 51.Application of the method to total syntheses of the structurally unusual sesquiterpenoids (+/-)-chiloscyphone (16) and (+/-)-6-epi-chiloscyphone (17) is described.

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