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497944-94-2

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497944-94-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 497944-94-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,9,7,9,4 and 4 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 497944-94:
(8*4)+(7*9)+(6*7)+(5*9)+(4*4)+(3*4)+(2*9)+(1*4)=232
232 % 10 = 2
So 497944-94-2 is a valid CAS Registry Number.

497944-94-2Relevant articles and documents

Development of an efficient and straightforward methodology toward the synthesis of molecularly diverse 2,6-disubstituted 3,4-dihydropyrimidin-4(3H)-ones

Font, David,Heras, Montserrat,Villalgordo, Jose? M.

, p. 1833 - 1842 (2007/10/03)

A simple and efficient methodology toward the synthesis of highly molecularly diverse 2,6-disubstituted 3,4-dihydropyrimidin-4(3H)-ones of type 3 has been developed. The methodology is based on a selective O-alkylation reaction with i-PrOH under Mitsunobu conditions followed by a nucleophilic heteroaromatic ipso-substitution of sulfones 20 and subsequent acidic hydrolysis of the isopropoxy group.

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