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393845-13-1

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393845-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 393845-13-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,3,8,4 and 5 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 393845-13:
(8*3)+(7*9)+(6*3)+(5*8)+(4*4)+(3*5)+(2*1)+(1*3)=181
181 % 10 = 1
So 393845-13-1 is a valid CAS Registry Number.

393845-13-1Downstream Products

393845-13-1Relevant articles and documents

Synthesis of 1,4-disubstituted pyrazolo[3,4-d]pyrimidines from 4,6-dichloropyrimidine-5-carboxaldehyde: Insights into selectivity and reactivity

Morrill, Christie,Babu, Suresh,Almstead, Neilg.,Moon, Young-Choon

, p. 1791 - 1806 (2013/07/26)

Strategies for carrying out the reaction of 4,6-dichloropyrimidine-5- carboxaldehyde with both aromatic and aliphatic hydrazines to generate 1-substituted 4-chloropyrazolo[3,4-d]pyrimidines in a selective, high-yielding, and operationally simple manner are presented. For aromatic hydrazines, the reaction is performed at a high temperature in the absence of an external base. For aliphatic hydrazines, the reaction proceeds at room temperature in the presence of an external base. The observed selectivity and reactivity trends are rationalized through consideration of the proposed reaction mechanism. The 1-substituted 4-chloropyrazolo[3,4-d]pyrimidine products serve as versatile synthetic intermediates, through further functionalization of the 4-chloride moiety, enabling the rapid generation of a structurally diverse array of 1,4-disubstituted pyrazolo[3,4-d]pyrimidines. Georg Thieme Verlag Stuttgart. New York.

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