134454-92-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134454-92-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,4,5 and 4 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 134454-92:
(8*1)+(7*3)+(6*4)+(5*4)+(4*5)+(3*4)+(2*9)+(1*2)=125
125 % 10 = 5
So 134454-92-5 is a valid CAS Registry Number.
134454-92-5Relevant articles and documents
A novel and versatile synthesis of 1-arylbenzocyclobutenols and 1-arylbenzocyclobutenes
Aidhen, Indrapal Singh,Narasimhan, N. S.
, p. 234 - 238 (2007/10/02)
Lithium halogen exchange has been achieved in the substrate 5, in the presence of a carbonyl group, using n-butyllithium.This leads to the first convenient synthesis of 1-arylbenzocyclobutenols (1) in good yields.