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75121-04-9

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75121-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75121-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,1,2 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 75121-04:
(7*7)+(6*5)+(5*1)+(4*2)+(3*1)+(2*0)+(1*4)=99
99 % 10 = 9
So 75121-04-9 is a valid CAS Registry Number.

75121-04-9Relevant articles and documents

Copper-catalyzed C-C bond formation through C-H functionalization: Synthesis of multisubstituted indoles from N-aryl enaminones

Bernini, Roberta,Fabrizi, Giancarlo,Sferrazza, Alessio,Cacchi, Sandro

supporting information; experimental part, p. 8078 - 8081 (2010/01/16)

A variety of functionalities, including the whole range of halogen substituents, are tolerated in the title reaction, an intramolecular approach for the construction of a multisubstituted indole skeleton from readily available enaminones (see scheme; phen=1,10-phenanthroline). The indole products are also prepared directly in high yield from α, β-ynones and primary amines.

Condensed Heteroaromatic Ring Systems; XVII: Palladium-Catalyzed Cyclization of β-(2-Halophenyl)amino Substituted α,β-Unsaturated Ketones and Esters to 2,3-Disubstituted Indoles

Sakamoto, Takao,Nagano, Tatsuo,Kondo, Yoshinori,Yamanaka, Hiroshi

, p. 215 - 218 (2007/10/02)

Palladium-catalyzed cyclization of β-(2-halophenyl)amino substituted α,β-unsaturated ketones and esters, prepared from 2-haloanilines by three different methods, gave 2,3-disubstituted indoles.

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