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644981-24-8

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644981-24-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 644981-24-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,4,9,8 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 644981-24:
(8*6)+(7*4)+(6*4)+(5*9)+(4*8)+(3*1)+(2*2)+(1*4)=188
188 % 10 = 8
So 644981-24-8 is a valid CAS Registry Number.

644981-24-8Downstream Products

644981-24-8Relevant articles and documents

N-Alkoxymethylation of Carboxamides Catalyzed by Br?nsted Acids

Ledneczki, István,Agócs, Pál M.,Molnár, árpád

, p. 2255 - 2257 (2007/10/03)

The reaction of carboxamides and dialkoxymethanes can be affected by sulfonic acids (methanesulfonic acid, p-toluene-sulfonic acid, and Nafion-H SAC-13 silica nanocomposite) to yield N-alkoxymethylcarboxamides. Various types of N-alkyl- and N-aryl-substituted acetamides can be reacted in a one-step procedure to give the products in moderate to good yields.

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