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Benzenesulfonic acid, 4-bromo-, bicyclo[2.2.1]hept-2-yl ester, endo- is a complex organic compound with the chemical formula C13H15BrO3S. It is a derivative of benzenesulfonic acid, featuring a bromine atom at the 4-position and a bicyclo[2.2.1]hept-2-yl ester group attached to the phenyl ring. The compound is characterized by its endo-configuration, which refers to the spatial arrangement of the substituents on the bicyclo[2.2.1]heptane ring. This specific arrangement can influence the compound's physical and chemical properties, such as its reactivity and stability. The compound may be used in various chemical reactions and applications, particularly in the synthesis of pharmaceuticals and other organic compounds.

840-89-1

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840-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 840-89-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 840-89:
(5*8)+(4*4)+(3*0)+(2*8)+(1*9)=81
81 % 10 = 1
So 840-89-1 is a valid CAS Registry Number.

840-89-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name endo-2-norbornyl p-bromobenzenesulfonate

1.2 Other means of identification

Product number -
Other names 4-bromo-benzenesulfonic acid-[2endo]norbornyl ester]

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
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More Details:840-89-1 SDS

840-89-1Relevant academic research and scientific papers

Application of Mechanistic and Transition-State Indicators to endo and exo-2-Norbornyl Arenesulfonates. Definition of a new Mechanistic Indicator

McManus, Samuel P.,Smith, Maurice R.,Shankweiler, Jean M.,Hoffman, Robert V.

, p. 141 - 148 (2007/10/02)

We have mechanistically classified endo- and exo-2-norbornyl arenesulfonates by using two common probes: the effect on rate of added thiourea and rate correlation in aqueous ethanol and trifluoroethanol.Interestingly, the exo isomer is improperly classified by each of these probes because of medium-dependent ion-pair return.In search of better mechanistic indicators, pseudo-first-order solvolytic rates and products have been determined for a series of endo- and exo-2-norbornyl arenesulfonates.Using these and literature data, we have compared these substrates with others by plotting α-deuterium isotope effects against β1gMe values determined for a series or arenesulfonates in the same or a similar solvent.The use of this type of plot as a heuristic method for distinguishing k8 and kΔ substrates is discussed.Finally, our product studies are consistent with the involvement of solvent-seperated ion pairs in the solvolysis of 2-norbornyl arenesulfonates.Different alcohol-ether product ratios for the isomeric esters in consistent with dual pathways for product formation with the endo substrates.

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