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1609538-07-9

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1609538-07-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1609538-07-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,5,3 and 8 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1609538-07:
(9*1)+(8*6)+(7*0)+(6*9)+(5*5)+(4*3)+(3*8)+(2*0)+(1*7)=179
179 % 10 = 9
So 1609538-07-9 is a valid CAS Registry Number.

1609538-07-9Downstream Products

1609538-07-9Relevant articles and documents

Controlling the catalytic aerobic oxidation of phenols

Esguerra, Kenneth Virgel N.,Fall, Yacoub,Petitjean, Laurène,Lumb, Jean-Philip

supporting information, p. 7662 - 7668 (2014/06/10)

The oxidation of phenols is the subject of extensive investigation, but there are few catalytic aerobic examples that are chemo- and regioselective. Here we describe conditions for the ortho-oxygenation or oxidative coupling of phenols under copper (Cu)-catalyzed aerobic conditions that give rise to ortho-quinones, biphenols or benzoxepines. We demonstrate that each product class can be accessed selectively by the appropriate choice of Cu(I) salt, amine ligand, desiccant and reaction temperature. In addition, we evaluate the effects of substituents on the phenol and demonstrate their influence on selectivity between ortho-oxygenation and oxidative coupling pathways. These results create an important precedent of catalyst control in the catalytic aerobic oxidation of phenols and set the stage for future development of catalytic systems and mechanistic investigations.

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