Cas 1280136-07-3,ethyl 2-methyl-4-phenyl-4-(5-methyl-1-tosyl-1H-indol-2-yl)but-2(E)-enoate

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Check Digit Verification of cas no

The CAS Registry Mumber 1280136-07-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,0,1,3 and 6 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1280136-07:
(9*1)+(8*2)+(7*8)+(6*0)+(5*1)+(4*3)+(3*6)+(2*0)+(1*7)=123
123 % 10 = 3
So 1280136-07-3 is a valid CAS Registry Number.

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1280136-07-3Relevant academic research and scientific papers

Studies on the intermolecular hydroarylation of N-Ts- or N-Ac-protected indoles and 2,3-allenoates

Fang, Zhao,Fu, Chunling,Ma, Shengming

supporting information; experimental part, p. 1227 - 1231 (2011/04/15)

An operationally simple, TFA-promoted regioselective hydroarylation reaction of 2,3-allenoates with N-Ts- or N-Ac-indoles to afford 4-indolyl-4-arylbut-2-enoates is described. A series of substrates was tested, and the E/Z selectivity was found to depend

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