131298-23-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131298-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,9 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131298-23:
(8*1)+(7*3)+(6*1)+(5*2)+(4*9)+(3*8)+(2*2)+(1*3)=112
112 % 10 = 2
So 131298-23-2 is a valid CAS Registry Number.
131298-23-2Relevant academic research and scientific papers
Intra- and Extraannularly Functionalized Phanes: Syntheses and Properties
Knops, Peter,Voegtle, Fritz
, p. 1223 - 1227 (2007/10/02)
The severely strained new cyclophanes 7b-f, consisting of bridged tolane subunits and bearing intraannular substituents R, were prepared mainly to study steric interactions of R with the "? cloud" of the triple bond.These compounds exist in a rigid twiste
