141945-66-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 141945-66-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,4 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 141945-66:
(8*1)+(7*4)+(6*1)+(5*9)+(4*4)+(3*5)+(2*6)+(1*6)=136
136 % 10 = 6
So 141945-66-6 is a valid CAS Registry Number.
InChI:InChI=1/C21H14N2O3S/c24-21-19(23(25)26)20(27-16-11-5-2-6-12-16)17-13-7-8-14-18(17)22(21)15-9-3-1-4-10-15/h1-14H
141945-66-6Relevant articles and documents
Nucleophilic Substitution and Ring Closure Reactions of 4-Chloro-3-nitro-2-quinolones
Roschger, Peter,Fiala, Werner,Stadlbauer, Wolfgang
, p. 225 - 231 (2007/10/02)
4-Chloro-3-nitro-2-quinolones 3 obtained from the 4-hydroxy quinolones 1 by nitration and chlorination, reacted with sodium azide to the 4-azido derivatives 4 which cyclized on thermolysis to yield the furoxanes 5.Nucleophilic substitution reactions of 3