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117759-80-5

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117759-80-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117759-80-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,5 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 117759-80:
(8*1)+(7*1)+(6*7)+(5*7)+(4*5)+(3*9)+(2*8)+(1*0)=155
155 % 10 = 5
So 117759-80-5 is a valid CAS Registry Number.

117759-80-5Relevant articles and documents

Thioamidoalkylation of 1,3-dicarbonyl compounds, enol silyl ethers, and enamines

Katritzky, Alan R.,Celik, Ilhami,Abdel-Fattah, Ashraf A. A.

, p. 1655 - 1662 (2008/02/05)

Novel syntheses of β-thioamido ketones via thioamido-alkylations of malonates, β-keto esters, β-diketones, enol silyl ethers, and enamines with N-(α-thioamidoalkyl)benzotriazoles are described. Georg Thieme Verlag Stuttgart.

A GENERAL METHOD FOR THE N-ALKYLATION OF THIOAMIDES.

Katritzky, Alan R.,Drewniak, Malgorzata

, p. 1755 - 1758 (2007/10/02)

Thioamides are N-alkylated in a two-step procedure: (i) Reaction with an aldehyde and benzotriazole yields an adduct which is (ii) reduced to the N-alkylthioamide by NaBH4.

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