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19837-34-4

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19837-34-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19837-34-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,3 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19837-34:
(7*1)+(6*9)+(5*8)+(4*3)+(3*7)+(2*3)+(1*4)=144
144 % 10 = 4
So 19837-34-4 is a valid CAS Registry Number.

19837-34-4Relevant articles and documents

Beyond the limits: Palladium-N-heterocyclic carbene-based catalytic system enables highly efficient [4+2] benzannulation reactions

Zatolochnaya, Olga V.,Galenko, Alexey V.,Gevorgyan, Vladimir

supporting information; experimental part, p. 1149 - 1155 (2012/06/16)

A highly efficient catalytic system for the palladium-catalyzed [4+2] benzannulation reaction of enynes and enynophiles has been developed. The use of an N-heterocyclic carbene-based palladium precursor allowed us to achieve turnover numbers up to 1800. T

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