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129103-71-5

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129103-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129103-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,0 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 129103-71:
(8*1)+(7*2)+(6*9)+(5*1)+(4*0)+(3*3)+(2*7)+(1*1)=105
105 % 10 = 5
So 129103-71-5 is a valid CAS Registry Number.

129103-71-5Relevant articles and documents

Samarium(II)-mediated spirocyclization by intramolecular aryl radical addition onto an aromatic ring

Iwasaki, Hiroki,Eguchi, Toru,Tsutsui, Nozomi,Ohno, Hiroaki,Tanaka, Tetsuaki

supporting information; experimental part, p. 7145 - 7152 (2009/05/07)

(Chemical Equation Presented) Samarium(II)-mediated spirocyclization by intramolecular addition of aryl radicals onto an aromatic ring was achieved by the reaction of N-(2-iodophenyl)-N-alkylbenzamides with SmI2 in the presence of HMPA, yielding spirocyclic indolin-2-one derivatives. The ether congeners afford spirocyclic benzofuran derivatives in moderate yields by aryl radical addition onto a benzene ring without having an electron-withdrawing group. The reaction with other aryl groups such as naphthalene and indole rings is also described.

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