641628-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 641628-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,1,6,2 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 641628-19:
(8*6)+(7*4)+(6*1)+(5*6)+(4*2)+(3*8)+(2*1)+(1*9)=155
155 % 10 = 5
So 641628-19-5 is a valid CAS Registry Number.
641628-19-5Relevant articles and documents
A valuable heterocyclic ring transformation: From isoxazolin-5(2H)-ones to quinolines
Abbiati, Giorgio,Beccalli, Egle M.,Broggini, Gianluigi,Zoni, Caterina
, p. 9887 - 9893 (2007/10/03)
A new synthesis of quinoline derivatives was achieved by catalytic hydrogenation of 3,4-disubstituted 2-(2-formylphenyl)-isoxazolin-5(2H)-ones. In the same way, 2,3-disubstituted [1,8]naphthyridine was obtained.