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Methyl Triphenyl Phosphonium BromideMethyl triphenyl phosphonium bromide (CAS 1779-49-3), with a purity of 99.5% min,it is used as a phase transfer catalyst in organic synthetic chemistry, suitable for the synthesis of interaromaticread more
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(Methoxymethyl)triphenylphosphonium Chloride(Methoxymethyl)triphenylphosphonium chloride(CAS 4009-98-7) is an important reagent in organic synthesis. After being treated with strong alkali, it undergoes Wittig reaction with various aldehydesread more
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Tetrapropylammonium BromideTetrapropylammonium Bromide 99.0% (CAS 1941-30-6) is mainly used as a phase transfer catalyst for organic synthesis and a molecular sieve template agent.read more
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Tetrabutylammonium HydrogensulfateTetrabutylammonium Hydrogensulfate 99.0% (CAS 32503-27-8 ) ,is white to off-white solid, It is a commonly used phase transfer catalyst in organic synthesis chemistry such as halogen replacementread more
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Tetrabutylammonium Fluoride TrihydrateTetrabutylammonium fluoride hydrate (CAS 87749-50-6) is available in two concentrations: 82% and 85%. It contains crystal water, its anhydrous base is 98%min. It is an important selectiveread more
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Methyl Triethyl Ammonium ChlorideMethyl triethyl ammonium chloride, also known as triethylmethylammonium chloride, is an organic compound with the chemical formula C7H16NCl and a molecular weight of 151.68. This substance isread more
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Triethylamine HydrobromideTriethylamine hydrobromide (CAS 636-70-4) , Purity 99.0% min,it is a white crystalline solid that is stable at room temperature. It is strongly hygroscopic and soluble in water. Its aqueous solutionread more
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Ethyl Triphenyl Phosphonium BromideEthyltriphenylphosphonium bromide (CAS 1530-32-1), with a purity of 99.5% min, it is white crystalline powder. It is a precursor of phosphine Ylide for Wittig reactions in fine chemicals,read more
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Tetrabutylammonium HydroxideTetrabutylammonium Hydroxide(CAS 2052-49-5),with a content of 25%, it is a colorless transparent liquid. It is easy to form crystalline hydrate solids below 25℃.It is commonly used as a phaseread more
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Benzyltriethylammonium HydroxideBenzyltriethylammonium hydroxide, also known as hydroxy-phenyltriethylamine, is an organic compound with the formula C13H23NO and a molecular weight of 209.33. The chemical belongs to the quaternaryread more
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Hexamethonium HydroxideHexamethonium hydroxide (CAS 556-81-0) with a content of 25% is is a strong organic base. It is commonly used as a template agent for ITQ-13, EU-1, and other molecular sieves, primarily for theread more
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Dibenzo-18-crown-6Dibenzo-18-crown ether-6, specifically, is a ring structure composed of two benzene rings through 18 carbon atoms and 6 oxygen atoms, of which 6 oxygen atoms are located on the ring, spaced apart,read more
These PTC displacement reactions require high temperature and require thermally stable phase-transfer catalysts, such as hexaethyl guanidinium chloride (HEG Cl) and tetraphenyl...
Dec 16, 2023 · 15. O'Driscoll BR (1989) "Supraventricular tachycardia caused by nebulised ipratropium bromide." Thorax, 44, p. 312. 16. Cabana MD, Johnson H, Lee CKK, Helfaer M (1998) "Transient...
Tetrabutyl phosphonium bromide, TBPB, usually provides higher reactivity as a phase-transfer catalyst than TBAB, the corresponding ammonium salt, due to the looser ion pair with the reacting anion...
Sep 25, 2015 · Phase-transfer catalysis (PTC) is useful primarily for performing reaction between anions and organic substrates. Catalysts used most extensively are quaternary ammonium or...
Compounds containing bromide ions—including potassium-, sodium-, and ammonium bromide—were once used as sedatives and anticonvulsants, and were a major ingredient in over-the-counter products (eg,...
Bromide was the sole viable anticonvulsant on the market until the discovery of phenobarbital in 1912. Bromide was first offered to dogs in 1907, but its promise as an anticonvulsant was not found...
