117267-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117267-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,2,6 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117267-21:
(8*1)+(7*1)+(6*7)+(5*2)+(4*6)+(3*7)+(2*2)+(1*1)=117
117 % 10 = 7
So 117267-21-7 is a valid CAS Registry Number.
117267-21-7Relevant articles and documents
PTERIDINES. 52. A CONVENIENT SYNTHESIS OF 6-FORMYLPTERIN
Taylor, Edward C.,Ray, Partha S.
, p. 1865 - 1868 (2007/10/02)
6-Formylpterin has been prepared by a new and highly efficient procedure involving palladium-catalyzed coupling of 2-pivaloyl-6-chloropterin with styrene, followed by ozonolysis of the resulting 6-styryl derivative and acid hydrolysis of the 2-pivaloyl group.
