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1287721-31-6

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1287721-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1287721-31-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,7,7,2 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1287721-31:
(9*1)+(8*2)+(7*8)+(6*7)+(5*7)+(4*2)+(3*1)+(2*3)+(1*1)=176
176 % 10 = 6
So 1287721-31-6 is a valid CAS Registry Number.

1287721-31-6Relevant articles and documents

Convergent approach to nonsymmetrical 2,5-diester pyrroles

Lévesque, éric,Campeau, Louis-Charles,Gauvreau, Danny

supporting information; experimental part, p. 3086 - 3088 (2011/02/26)

A convergent approach towards nonsymmetrical 2,5-diester pyrroles is described. The building blocks can be easily assembled in less than four steps allowing for facile construction of diversity. The synthesis uses a rhodium-catalyzed NH insertion, followe

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