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97301-33-2

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97301-33-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97301-33-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,3,0 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97301-33:
(7*9)+(6*7)+(5*3)+(4*0)+(3*1)+(2*3)+(1*3)=132
132 % 10 = 2
So 97301-33-2 is a valid CAS Registry Number.

97301-33-2Relevant articles and documents

Polyaza Heterocycles. Part 2. Nucleophilic Substitution of Halogens in Halogenoquinoxalinocinnolines

Ahmad, Arshad,Dunbar, Linda J.,Green, Iain G.,Harvey, Ian W.,Shepherd, Thomas,et al.

, p. 2751 - 2758 (2007/10/02)

10-Chloroquinoxalinocinnoline readily undergoes methoxydechlorination when treated with sodium methoxide.The 1-, 2-, 3-, 4- and 9-chloro isomers are unreactive towards this reagent, but the 9,10-dichloro derivative undergoes substitution of both chlorines (the 10-position being much the more reactive).The 9- and 10-bromo analogues are both unreactive towards sodium methoxide, but the 9- and 10-fluoro analogues are both highly reactive, to the extent that it has not been possible even to isolate the 10-fluoro compound.Routes to 9- and 10-piperidinoquinoxalinocinnolines are described.

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