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33238-92-5

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33238-92-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33238-92-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,3 and 8 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 33238-92:
(7*3)+(6*3)+(5*2)+(4*3)+(3*8)+(2*9)+(1*2)=105
105 % 10 = 5
So 33238-92-5 is a valid CAS Registry Number.

33238-92-5Relevant articles and documents

Regiocontrolled gold-catalyzed [2+2+2] cycloadditions of ynamides with two discrete nitriles to construct 4-aminopyrimidine cores

Karad, Somnath Narayan,Liu, Rai-Shung

, p. 9072 - 9076 (2014)

Reported herein is the novel gold-catalyzed intermolecular [2+2+2] cycloaddition of ynamides with two discrete nitriles to form monomeric 4-aminopyrimidines, which are pharmaceutically important structural motifs. The utility of this new cycloaddition is demonstrated by the excellent regioselectivity obtained using a variety of ynamides and nitriles.

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