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61637-94-3

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61637-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61637-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,6,3 and 7 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 61637-94:
(7*6)+(6*1)+(5*6)+(4*3)+(3*7)+(2*9)+(1*4)=133
133 % 10 = 3
So 61637-94-3 is a valid CAS Registry Number.

61637-94-3Relevant articles and documents

Dithio and Thiono Esters, 50. - α,β-Acetylenic Thioamides, Dithio Esters, and Thiono Esters

Hartke, Klaus,Gerber, Hans-Dieter,Roesrath, Ulrich

, p. 903 - 916 (2007/10/02)

α,β-Acetylenic amides 5 and thioamides 7 have been obtained by a palladium-catalysed condensation of the terminal acetylenes 3 with N,N-dimethylcarbamoyl chloride (4) or -thiocarbamoyl chloride (6).Sulfhydrolysis of the α,β-acetylenic thioamidium salts 19

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