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204326-54-5

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204326-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 204326-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,3,2 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 204326-54:
(8*2)+(7*0)+(6*4)+(5*3)+(4*2)+(3*6)+(2*5)+(1*4)=95
95 % 10 = 5
So 204326-54-5 is a valid CAS Registry Number.

204326-54-5Relevant articles and documents

Chemo-, regio-, and stereoselective Heck-Matsuda arylation of allylic alcohols under mild conditions

Chaudhari, Tohasib Yusub,Hossian, Asik,Manna, Manash Kumar,Jana, Ranjan

, p. 4841 - 4845 (2015)

Heck arylation with allylic alcohol is extremely challenging due to chemo-, regio-, and stereoselective scrambling. Here we report a mild protocol for the alcohol selective β- and α-arylation of allylic and cinnamyl alcohols respectively with aryldiazonium salts. The steric and electronic parameters of the alkene play a prominent role in the regioselectivity.

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