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84144-31-0

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84144-31-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84144-31-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,1,4 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 84144-31:
(7*8)+(6*4)+(5*1)+(4*4)+(3*4)+(2*3)+(1*1)=120
120 % 10 = 0
So 84144-31-0 is a valid CAS Registry Number.

84144-31-0Relevant articles and documents

Chalcogen-Bonding Catalysis with Telluronium Cations

Aubert, Emmanuel,Mamane, Victor,Pale, Patrick,Weiss, Robin

, p. 19281 - 19286 (2021)

Chalcogen bonding results from non-covalent interactions occurring between electrodeficient chalcogen atoms and Lewis bases. Among the chalcogens, tellurium is the strongest Lewis acid, but Te-based compounds are scarcely used as organocatalysts. For the first time, telluronium cations demonstrated impressive catalytic properties at low loadings in three benchmark reactions: the Friedel–Crafts bromination of anisole, the bromolactonization of ω-unsaturated carboxylic acids and the aza-Diels–Alder between Danishefsky's diene and imines. The ability of telluronium cations to interact with a Lewis base through chalcogen bonding was demonstrated on the basis of multi-nuclear (17O, 31P, and 125Te) NMR analysis and DFT calculations.

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