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950918-54-4

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950918-54-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 950918-54-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,0,9,1 and 8 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 950918-54:
(8*9)+(7*5)+(6*0)+(5*9)+(4*1)+(3*8)+(2*5)+(1*4)=194
194 % 10 = 4
So 950918-54-4 is a valid CAS Registry Number.

950918-54-4Relevant articles and documents

Reaction of Pyridine-N-Oxides with Tertiary sp2-N-Nucleophiles: An Efficient Synthesis of Precursors for N-(Pyrid-2-yl)-Substituted N-Heterocyclic Carbenes

Bugaenko, Dmitry I.,Karchava, Alexander V.,Yurovskaya, Marina A.

supporting information, p. 5777 - 5782 (2020/12/01)

N-(Pyrid-2-yl)-substituted azolium and pyridinium salts, precursors for hybrid NHC-containing ligands, were obtained with excellent regioselectivity, employing a deoxygenative CH-functionalization of pyridine-N-oxides with substituted imidazoles, thiazoles, and pyridine. Unlike the traditional SNAr-based methods, this approach provides high yields for substrates bearing substituents of different electronic nature. The utility of azolium and pyridinium salts thus prepared was also highlighted by the synthesis of pyridyl-substituted imidazolyl-2-thione, benzodiazepine as well as 2-aminopyridines.

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