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131118-90-6

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131118-90-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131118-90-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,1 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131118-90:
(8*1)+(7*3)+(6*1)+(5*1)+(4*1)+(3*8)+(2*9)+(1*0)=86
86 % 10 = 6
So 131118-90-6 is a valid CAS Registry Number.

131118-90-6Relevant articles and documents

CONTRAST AGENTS

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Page/Page column 30, (2017/11/10)

The present invention relates to new class of functionalized polyazamacrocycles including at least one phosphonic or phosphinic group linked to a nitrogen atom of the macrocyclic cage, and capable of chelating paramagnetic metal ions, their chelated compl

Mechanistic investigations of cooperative catalysis in the enantioselective fluorination of epoxides

Kalow, Julia A.,Doyle, Abigail G.

, p. 16001 - 16012 (2011/11/13)

This report describes mechanistic studies of the (salen)Co- and amine-cocatalyzed enantioselective ring opening of epoxides by fluoride. The kinetics of the reaction, as determined by in situ 19F NMR analysis, are characterized by apparent first-order dependence on (salen)Co. Substituent effects, nonlinear effects, and reactivity with a linked (salen)Co catalyst provide evidence for a rate-limiting, bimetallic ring-opening step. To account for these divergent data, we propose a mechanism wherein the active nucleophilic fluorine species is a cobalt fluoride that forms a resting-state dimer. Axial ligation of the amine cocatalyst to (salen)Co facilitates dimer dissociation and is the origin of the observed cooperativity. On the basis of these studies, we show that significant improvements in the rates, turnover numbers, and substrate scope of the fluoride ring-opening reactions can be realized through the use of a linked salen framework. Application of this catalyst system to a rapid (5 min) fluorination to generate the unlabeled analog of a known PET tracer, F-MISO, is reported.

SUBSTITUTED HETEROCYCLIC COMPOUNDS

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Page 29, (2008/06/13)

Disclosed are novel piperazine derivatives, useful for the treatment of various disease states, in particular cardiovascular diseases such as atrial and ventricular arrhythmias, intermittent claudication, Prinzmetal's (variant) angina, stable and unsta

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