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116932-57-1

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116932-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116932-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,9,3 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 116932-57:
(8*1)+(7*1)+(6*6)+(5*9)+(4*3)+(3*2)+(2*5)+(1*7)=131
131 % 10 = 1
So 116932-57-1 is a valid CAS Registry Number.

116932-57-1Upstream product

116932-57-1Relevant articles and documents

INTRODUCTION OF SUBSTITUENTS INTO 5-MEMBERED AZA-HETEROAROMATICS

Begtrup, Mikael

, p. 573 - 598 (2007/10/02)

With emphasis on mono- and regio-selectively, methods for introduction of substituents at nitrogen and carbon atoms of 5-membered aza-heteroaromatics have been developed.The methods involve application of activation and of assistant groups for direction and protection.Activation has been achieved by the use of quaternary azolium ions and azol-N-oxides as reactive intermediates.If necessary, the N-oxides were further activated by alkylation or acylation.

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