117917-43-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117917-43-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,1 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117917-43:
(8*1)+(7*1)+(6*7)+(5*9)+(4*1)+(3*7)+(2*4)+(1*3)=138
138 % 10 = 8
So 117917-43-8 is a valid CAS Registry Number.
117917-43-8Relevant articles and documents
THE CHEMISTRY OF VICINAL TRICARBONYLS USE OF VINYL TRICARBONYL ESTERS IN THE FORMATION OF 3-HYDROXYPYRROLE-2-CARBOXYLATES
Wasserman, Harry H.,Cook, Jan D.,Fukuyama, James M.,Rotello, Vincent M.
, p. 1721 - 1724 (2007/10/02)
The reaction of primary amines with the vinyl tricarbonyl reagent 1 forms the basis of a general synthesis of N-substituted 3-hydroxypyrrole-2-carboxylates.
