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117840-89-8

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117840-89-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117840-89-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,8,4 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117840-89:
(8*1)+(7*1)+(6*7)+(5*8)+(4*4)+(3*0)+(2*8)+(1*9)=138
138 % 10 = 8
So 117840-89-8 is a valid CAS Registry Number.

117840-89-8Downstream Products

117840-89-8Relevant articles and documents

Conversion of some azaheterocyclic-acetic esters and -acetonitriles into fused heterocycles

McKinnon, David M.,Spevack, Perry,Tipples, Graham

, p. 2339 - 2344 (2007/10/02)

Various heterocyclic acid esters and nitriles of the pyridine, thiazole, and imidazole series react with 3-methylthio-4-phenyl-1,2-dithiolium perchlorate to form fused pyridinethiones or dithiolylidene esters.These esters or nitriles also react with trichloromethanesulfenyl chloride to form fused isothiazoles.

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