148256-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 148256-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,2,5 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 148256-49:
(8*1)+(7*4)+(6*8)+(5*2)+(4*5)+(3*6)+(2*4)+(1*9)=149
149 % 10 = 9
So 148256-49-9 is a valid CAS Registry Number.
148256-49-9Relevant articles and documents
Synthesis and Structure of 2-Phenyl-4-aryl-3,4,5,6-tetrahydrobenzoquinazolines
Perjesi, Pal,Foeldesi, Andras,Tamas, Jozsef
, p. 167 - 176 (1993)
The reaction of 2-arylidene-1-tetralones 1 with benzamidine gave 2-phenyl-4-aryl-3,4,5,6-tetrahydrobenzoquinazolines 2.Investigations on the tautomeric equilibria of 2 by IR, 1H- and 13C-NMR showed the compounds to exist predominantly in the tautomeric