204767-34-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204767-34-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,7,6 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 204767-34:
(8*2)+(7*0)+(6*4)+(5*7)+(4*6)+(3*7)+(2*3)+(1*4)=130
130 % 10 = 0
So 204767-34-0 is a valid CAS Registry Number.
204767-34-0Relevant articles and documents
Synthesis of a ketorolac model via aromatic carbenoid insertion
Mueller, Paul,Polleux, Philippe
, p. 317 - 323 (1998)
The decomposition of diazo ester 2b with chiral Rh(II) catalysts proceeded via intramolecular aromatic carbenoid insertion to the racemic pyrrole derivative 5b in 72% yield. In contrast, the benzoylated precursor 16 afforded no ketorolac 1b when exposed t