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1190732-26-3

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1190732-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1190732-26-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,0,7,3 and 2 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1190732-26:
(9*1)+(8*1)+(7*9)+(6*0)+(5*7)+(4*3)+(3*2)+(2*2)+(1*6)=143
143 % 10 = 3
So 1190732-26-3 is a valid CAS Registry Number.

1190732-26-3Downstream Products

1190732-26-3Relevant articles and documents

An investigation into the electrophilic cyclisation of N-acyl-pyrrolidinium ions: A facile synthesis of Pyrrolo-tetrahydroisoquinolones and Pyrrolo-benzazepinones

King, Frank D.,Aliev, Abil E.,Caddick, Stephen,Copley, Royston C. B.

experimental part, p. 3561 - 3571 (2010/01/06)

The triflic acid-mediated cyclisation of N-arylmethyl- and N-arylethyl-acylpyrrolidinium ions gave moderate to good yields of pyrrolo-tetrahydroisoquinolones and pyrrolo-benzazepinones respectively. Electron-donating R substituents enhanced the rate of reaction and gave higher yields than electron-withdrawing substituents. Substituents on the methyl or ethyl chain in general enhanced the reaction, unless sterically encumbered. The equivalent acylpiperidinium ions cyclised much slower and in lower yield.

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