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1018987-52-4

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1018987-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1018987-52-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,8,9,8 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1018987-52:
(9*1)+(8*0)+(7*1)+(6*8)+(5*9)+(4*8)+(3*7)+(2*5)+(1*2)=174
174 % 10 = 4
So 1018987-52-4 is a valid CAS Registry Number.

1018987-52-4Relevant articles and documents

Utilization of sequential palladium-catalyzed cross-coupling reactions in the stereospecific synthesis of trisubstituted olefins

Houpis, Ioannis N.,Shilds, Didier,Nettekoven, Ulrike,Schnyder, Anita,Bappert, Erhart,Weerts, Koen,Canters, Martine,Vermuelen, Wim

experimental part, p. 598 - 606 (2010/04/22)

A stereospecific synthesis of the drug-candidate 1 is described. The synthetic sequence, aimed at accomplishing modularity and cost savings, features a series of organometallic steps to afford stereospecifically the desired trisubstituded olefin active pharmaceutical ingredient. Key developments consist of a mild Sonogashira reaction of aryl bromide 7a with the polymerization prone propargyl alcohol and a stereospecific hydroalumination, Zn/Al exchange, and Pd-catalyzed cross-coupling sequence facilitated by the commercially available PEPPSI catalyst.

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