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143583-65-7

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143583-65-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143583-65-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,5,8 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 143583-65:
(8*1)+(7*4)+(6*3)+(5*5)+(4*8)+(3*3)+(2*6)+(1*5)=137
137 % 10 = 7
So 143583-65-7 is a valid CAS Registry Number.

143583-65-7Relevant articles and documents

A new route to quinolone and indole skeletones via ketone- and ester-imide cyclodehydration reactions

Kim, Guncheol,Keum, Gyochang

, p. 1979 - 1988 (2007/10/03)

Ketone-imide cyclodehydration reactions of aromatic succinimide and phthalimide (7, 8) have afforded quinolone acids (11, 12). Further transformation of the acids provided the corresponding esters (13, 14) and vinylogous urethanes (9, 10). Similarly, ester-imide cyclodehydration reactions of aromatic imide esters (19, 20) have afforded indole acids (23, 24).

Synthesis and spectroscopic studies of some novel quinoline derivatives

Alkhathlan

, p. 2659 - 2671 (2007/10/02)

An intramolecular Wittig reaction of some substituted aminoacetophenones was used for the synthesis of novel quinoline derivatives. In addition, the base induced cyclization of the aminoacetophenones was investigated. The IR and NMR spectra of the quinoline derivatives are reported.

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