91143-32-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91143-32-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,1,4 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91143-32:
(7*9)+(6*1)+(5*1)+(4*4)+(3*3)+(2*3)+(1*2)=107
107 % 10 = 7
So 91143-32-7 is a valid CAS Registry Number.
91143-32-7Relevant academic research and scientific papers
2,3-Dihydro-7-benzofurancarboxylic Acids
Stanetty, Peter,Koller, Herbert,Puerstinger, Gerhard
, p. 883 - 891 (2007/10/02)
The syntheses of a series of title compounds 1 a-f bearing methyl groups in the heterocyclic part were described.Depending on the substitution pattern the Claisen rearrangement (path A) or the methodology of directed lithiations (path B) were used as the
