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1289423-75-1

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1289423-75-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1289423-75-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,9,4,2 and 3 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1289423-75:
(9*1)+(8*2)+(7*8)+(6*9)+(5*4)+(4*2)+(3*3)+(2*7)+(1*5)=191
191 % 10 = 1
So 1289423-75-1 is a valid CAS Registry Number.

1289423-75-1Downstream Products

1289423-75-1Relevant academic research and scientific papers

Highly stereoselective synthesis of novel trans-thiophenylene-silylene- vinylene-arylene molecular and macromolecular compounds

Ludwiczak, Monika,Majchrzak, Mariusz,Marciniec, Bogdan,Kubicki, MacIej

, p. 1456 - 1464 (2011/05/09)

Novel stereoregular molecular compounds 8-13 containing thiophenylene-silylene-vinylene-phenylene units have been synthesised via highly effective silylative coupling of styrene and 1,4-divinylbenzene (7) with respective vinylsilylthiophenes (3, 4) and bis(vinylsilyl)thiophenes (5, 6) catalyzed by RuHClCO(PCy3)2. Respective copolymers (14, 15) were produced via silylative copolycondensation of 5 and 6 with 7. All products were isolated and characterised by NMR, MS, HRMS and two of them 10 and 11 by X-ray method. Catalytic study as well as stoichiometric reactions of Ru-H (1) with 2-(vinylsilyl)thiophene (3) and Ru-Si (16) with styrene confirmed the mechanism of the silylative coupling olefins with vinylsilicon compounds.

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