Cas 205242-83-7,1-((E)-3-Benzenesulfonyl-propenyl)-1H-benzotriazole

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Check Digit Verification of cas no

The CAS Registry Mumber 205242-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,2,4 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 205242-83:
(8*2)+(7*0)+(6*5)+(5*2)+(4*4)+(3*2)+(2*8)+(1*3)=97
97 % 10 = 7
So 205242-83-7 is a valid CAS Registry Number.

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205242-83-7Relevant academic research and scientific papers

(E)-1-Benzotriazolyl-3-(phenylsulphonyl)-1-propene and Its Alkylation Reactions

Katritzky, Alan R.,Nichols, Daniel A.,Qi, Ming

, p. 173 - 176 (1998)

(E)-1-Benzotriazolyl-3-(phenylsulphonyl)-1-propene (6) has been synthesized and its alkylation was studied. The results showed that the phenylsulphonyl group is a more powerful α-directing group than the benzotriazolyl group in the corresponding 1,3-dihetero-stabilized allyl anion.

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