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2698-84-2

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2698-84-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2698-84-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,9 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 2698-84:
(6*2)+(5*6)+(4*9)+(3*8)+(2*8)+(1*4)=122
122 % 10 = 2
So 2698-84-2 is a valid CAS Registry Number.

2698-84-2Relevant articles and documents

On the Silylation of Bifunctional Amidines of Oxalic Acid

Beckert, Rainer,Vorwerk, Steffen,Lindauer, Dirk,Doering, Manfred

, p. 1386 - 1390 (2007/10/02)

N,N',N'',N'''-Tetraaryl-oxalic amidines react with N-trimethylsilyldiethylamine to yield the activated and open chained derivatives 3a, b.By the use of diorganyldichlorosilanes the new 1,3-diaza-2-sila-cyclopentanes 5a-d were obtained.Cycloacylations of 3

Derivatives of Imidazolidines from Oxalic Amidines

Beckert, R.,Mayer, R.

, p. 227 - 236 (2007/10/02)

Tetraarylsubstituted oxalic amidines 1 react with acyl chlorides, phosgene, thiophosgene, chlorocarbonylsulfenylchloride, isocyaniddichlorides, and N-aroyl-1-chlorothio-formimidoylchlorides 7 to give the corresponding 5-membered heterocycles 3,4,5 and 8.Isocyanates 9 and isothiocyanates 10 react with oxalic amidines to yield imidazolidines 11, 12 and ureas 13, 14.Hydrolysis of 3-5, 8, 11, 12 leads to the corresponding oxo compounds 15, 16.

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