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135056-04-1

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135056-04-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135056-04-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,0,5 and 6 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 135056-04:
(8*1)+(7*3)+(6*5)+(5*0)+(4*5)+(3*6)+(2*0)+(1*4)=101
101 % 10 = 1
So 135056-04-1 is a valid CAS Registry Number.

135056-04-1Downstream Products

135056-04-1Relevant articles and documents

Imidazopyridinium and pyridopyrimidium bromides: Synthesis and hydrolysis

Huang, Kevin S.,Haddadin, Makhluf J.,Kurth, Mark J.

, p. 2382 - 2385 (2007/10/03)

The reactions of symmetrical and unsymmetrical 2,2′-dipyridylamines with 1,2-dibromoethane and 1,3-dibromopropane give imidazopyridinium and pyridopyrimidium bromides, respectively. These acetone/CH2Cl2 -insoluble, highly fluorescent quaternary ammonium salts undergo addition/ring opening upon treatment with methanolic KOH to give pyridin-2-one derivatives. A sequential N,N-dialkylation/ring-opening hydrolysis/N,N-dialkylation/ring-opening hydrolysis strategy was developed for the construction of unsymmetrical bis(pyridin-2-ones).

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