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89101-11-1

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89101-11-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89101-11-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,0 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89101-11:
(7*8)+(6*9)+(5*1)+(4*0)+(3*1)+(2*1)+(1*1)=121
121 % 10 = 1
So 89101-11-1 is a valid CAS Registry Number.

89101-11-1Relevant articles and documents

Ultrafast Click Chemistry with Fluorosydnones

Liu, Hui,Audisio, Davide,Plougastel, Lucie,Decuypere, Elodie,Buisson, David-Alexandre,Koniev, Oleksandr,Kolodych, Sergii,Wagner, Alain,Elhabiri, Mourad,Krzyczmonik, Anna,Forsback, Sarita,Solin, Olof,Gouverneur, Véronique,Taran, Frédéric

, p. 12073 - 12077 (2016/11/16)

We report the synthesis and reactivity of 4-fluorosydnones, a unique class of mesoionic dipoles displaying exquisite reactivity towards both copper-catalyzed and strain-promoted cycloaddition reactions with alkynes. Synthetic access to these new mesoionic compounds was granted by electrophilic fluorination of σ-sydnone PdIIprecursors in the presence of Selectfluor. Their reactions with terminal and cyclic alkynes were found to proceed very rapidly and selectively, affording 5-fluoro-1,4-pyrazoles with bimolecular rate constants up to 104m?1s?1, surpassing those documented in the literature with cycloalkynes. Kinetic studies were carried out to unravel the mechanism of the reaction, and the value of 4-fluorosydnones was further highlighted by successful radiolabeling with [18F]Selectfluor.

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