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53151-13-6

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53151-13-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53151-13-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,1,5 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 53151-13:
(7*5)+(6*3)+(5*1)+(4*5)+(3*1)+(2*1)+(1*3)=86
86 % 10 = 6
So 53151-13-6 is a valid CAS Registry Number.

53151-13-6Relevant articles and documents

Reactions of 2-[(2-arylimino-2-cyano-1,1-dimethylethyl)arylamino]-3-methylbut-2-enenitrile with copper(II) acetate: Synthesis of 2-(2,3-dihydro-2,2-dimethyl-3-oxo-1H-indol-1-yl)-3-methylbut-2-enenitriles

Yun, Sangmin,Kim, Kyongtae

, p. 2360 - 2369 (2007/10/03)

Treatment of 2-[(2-arylimino-2-cyano-1,1-dimethylethyl)arylamino]-3-methylbut-2-enenitrile 15, prepared by reactions of N-aryl α-cyanoenamines 3 with Cu(OAc)2·H2O (2 equiv.) in the presence of pyridine (2 equiv.) in EtOH at reflux, and with Cu(OAc)2·H2O (1 equiv.) in HOAc at reflux gave 2-(2,3-dihydro-2,2-dimethyl-3-oxo-1H-indol-1-yl)-3-methylbut-2-enenitriles 11 in moderate to good yields.

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