190184-84-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 190184-84-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,1,8 and 4 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 190184-84:
(8*1)+(7*9)+(6*0)+(5*1)+(4*8)+(3*4)+(2*8)+(1*4)=140
140 % 10 = 0
So 190184-84-0 is a valid CAS Registry Number.
190184-84-0Relevant articles and documents
Pyryliumolates. 1. A simple access to anellated benzotropolones
Plug,Friedrichsen
, p. 7509 - 7510 (1992)
The synthesis of benzotropolones 4a,b utilizing an intramolecular 1,3-dipolar cycloaddition reaction with benzopyryliumolates (2a,b; generated in situ) is reported.
