1668-99-1

Usage

Uses

Used in Pharmaceutical Industry:
(9S)-6'-methoxycinchonan-9-ol monohydrochloride is used as a potential pharmaceutical agent for the treatment of malaria due to its structural similarity to quinine, a known antimalarial medication. Its unique stereochemistry and the presence of the methoxy group may contribute to its efficacy and selectivity in targeting malaria-causing parasites.
Additionally, given its potential pharmaceutical applications, (9S)-6'-methoxycinchonan-9-ol monohydrochloride could be utilized in the development of new drugs for other therapeutic areas, leveraging its unique chemical properties and the versatility of its structure for medicinal chemistry optimization.

Upstream product

• 76-60-8 bromocresol green 
• 121-54-0 benzethonium cloride 
• 56-54-2 quinine 
• 130-95-0 Quinine 
• 115-39-9 bromophenol blue 

Downstream Products

• 522-66-7 dihydroquinine 

Relevant academic research and scientific papers

Multiple-responsive ionic complex luminogen of quinine and camphorsulfonic acid with aggregation-induced emission

Bulky camphorsulfonic acid (CSA) was used to complex with quinine (Qu) to impose restricted intramolecular rotation (RIR) required for aggregation-induced emission (AIE) properties. After complexation with two equivalents of CSA, the non-emissive quinine (Qu) base can be protonated to produce an ionic complex Qu(CSA)2 with AIE properties. The ionic bonds in the complex Qu(CSA)2 are sensitive to various external stimuli, which allows its use as a luminescent sensor for pH values and different metal ions. Moreover, the ionic Qu(CSA)2 can be a denaturant and biological sensor for the blood protein of bovine serum albumin (BSA); through the use of Qu(CSA)2, the unfolding process of the BSA chains was evaluated. Theoretical and practical aspects of this ionic Qu(CSA)2 complex are discussed in this study.

Method for suppressing bitter taste

A method for suppressing a bitter taste of material to be placed in mouth or in contact with mouth, such as foods, drinks, pharmaceuticals, comprises adding an acidic phospholipid or an acidic lysophospholipid to the material.

Substitution reactions of benzethonium chloride with ion associates of bromocresol green - quinine and bromophenol blue - quinine in dichlormethane

An excess concentration of base quinine (Q) reacts with a sulphonphthalein diacidic dye XH2, (bromocresol green, BCGH2, or bromophenol blue, BPBH2) in dichlormethane solution to form an ion associate (X(2-)(QH21+)2) of stoichiometry 1:2 (dye:amine).Benzethonium chloride (CIB) reacts with the 1:2 ion associate to form an ion associate (QH1+,X2-,B1+) and quinine hydrochloride ClQH(1+).This substitution reaction is a chemical equilibrium with formation constants of 1.50+/-0.67, 1.64+/-0.54, 1.07+/-0.29, 1.04+/-0.20, and 0.84+/-0.26 for BCG and 1.86+/-0.59, 1.47+/-0.23, 1.40+/-0.65, 1.13+/-0.37, and 1.11+/-0.27 for BPB at 283.16, 288.16, 293.16, 298.16, and 303.16 K respectively.The thermodynamic parameters determined by van't Hoff's equation are ΔH0 = -21.766+/-7.482 kJmol-1, ΔS0 = -73+/-51 Jmol-1K-1, and ΔG0 = -1.134+/-0.972 kJmol-1 for BCG and ΔH0 = -18.678+/-7.482 kJmol-1, ΔS0 = -61+/-26 Jmol-1K-1, ΔG0 = -0.916+/-0.401 kJmol-1 for BPB (ΔG0 at 293.16K; and ΔH0 and ΔS0 determined in the range 283-303K). Key words: bromocresol green-quinine-benzetonium, ion associate mixture, bromophenol blue-quinine-benzethonium, equilibrium constants, thermodynamic parameters.