133609-83-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133609-83-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 133609-83:
(8*1)+(7*3)+(6*3)+(5*6)+(4*0)+(3*9)+(2*8)+(1*3)=123
123 % 10 = 3
So 133609-83-3 is a valid CAS Registry Number.
133609-83-3Relevant articles and documents
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
