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120229-49-4

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120229-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120229-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,2,2 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 120229-49:
(8*1)+(7*2)+(6*0)+(5*2)+(4*2)+(3*9)+(2*4)+(1*9)=84
84 % 10 = 4
So 120229-49-4 is a valid CAS Registry Number.

120229-49-4Downstream Products

120229-49-4Relevant articles and documents

Cycloaddition of Benzothiete to 4-Substituted Styrenes

Meier, Herbert,Schmidt, Michael,Eckes, Heinz-Ludwig

, p. 1545 - 1550 (2007/10/02)

By thermal ring opening benzothiete (1) generates an 8-? electron system 2, which forms the cycloadducts 4/5a-j with 4-substituted styrenes 3a-j.The enhancement of the reactivity by electron-donating as well as electron-withdrawing substituents and their influence on the regioselectivity are discussed by applying frontier orbital calculations. - Key Words: Cycloaddition; Substituent effects; Reactivity; Regioselectivity; FMO calculations

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