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3940-84-9

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3940-84-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3940-84-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,4 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3940-84:
(6*3)+(5*9)+(4*4)+(3*0)+(2*8)+(1*4)=99
99 % 10 = 9
So 3940-84-9 is a valid CAS Registry Number.

3940-84-9Relevant articles and documents

N-Benzylbenzamides: A new class of potent tyrosinase inhibitors

Cho, Sung Jin,Roh, Jung Seop,Sun, Won Suck,Kim, Sung Han,Park, Ki Duk

, p. 2682 - 2684 (2006)

A series of potent inhibitors of tyrosinase and their structure-activity relationships are described. N-Benzylbenzamide derivatives (1-21) with hydroxyl(s) were synthesized and tested for their tyrosinase inhibitory activity. With this series, compound 15 provided a potent tyrosinase inhibition: it effectively inhibited the oxidation of l-DOPA catalyzed by mushroom tyrosinase with an IC50 of 2.2 μM.

N-Heterocyclic Carbene-Mediated Microfluidic Oxidative Electrosynthesis of Amides from Aldehydes

Green, Robert A.,Pletcher, Derek,Leach, Stuart G.,Brown, Richard C. D.

supporting information, p. 1198 - 1201 (2016/03/15)

A flow process for N-Heterocyclic Carbene (NHC)-mediated anodic oxidative amidation of aldehydes is described, employing an undivided microfluidic electrolysis cell to oxidize Breslow intermediates. After electrochemical oxidation, the reaction of the intermediate N-acylated thiazolium cation with primary amines is completed by passage through a heating cell to achieve high conversion in a single pass. The flow mixing regimen circumvented the issue of competing imine formation between the aldehyde and amine substrates, which otherwise prevented formation of the desired product. High yields (71-99%), productivities (up to 2.6 g h-1), and current efficiencies (65-91%) were realized for 19 amides.

Radical-Induced Metal and Solvent-Free Cross-Coupling Using TBAI-TBHP: Oxidative Amidation of Aldehydes and Alcohols with N-Chloramines via C-H Activation

Achar, Tapas Kumar,Mal, Prasenjit

, p. 666 - 672 (2015/08/19)

A solvent-free cross-coupling method for oxidative amidation of aldehydes and alcohols via a metal-free radial pathway has been demonstrated. The proposed methodology uses the TBAI-TBHP combination which efficiently induces metal-free C-H activation of aldehydes under neat conditions at 50 °C or ball-milling conditions at room temperature.

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