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171357-22-5

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171357-22-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 171357-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,3,5 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 171357-22:
(8*1)+(7*7)+(6*1)+(5*3)+(4*5)+(3*7)+(2*2)+(1*2)=125
125 % 10 = 5
So 171357-22-5 is a valid CAS Registry Number.

171357-22-5Upstream product

171357-22-5Relevant articles and documents

A New, Short, and Stereocontrolled Synthesis of C2-Symmetric 1,2-Diamines

Vemula, Rajender,Wilde, Nathan C.,Goreti, Rajendar,Corey

, p. 3883 - 3886 (2017)

The previously unknown 5-spirocyclohexylisoimidazole has been made efficiently and simply by reaction of ammonia, glyoxal hydrate, and cyclohexanone. It is a very useful precursor for the diastereocontrolled synthesis of many C2-symmetric 1,2-diamines, a class which is important for the generation of a variety of C2-symmetric reagents and catalysts for enantioselective synthesis.

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