We have obtained wide recognition and generous returns, and the pure crown ether product, 18 Crown Ether, crown ether for chromatography share in the domestic and foreign markets is growing rapidly.The Dibenzo 18 crown 6 as ptc produced by the company has been sold to various provinces, cities, prefectures, counties and districts across the country, and exported to many countries and regions in the world. The company incorporated social responsibility management knowledge into the management training courses, focused on building a resource-saving and environment-friendly enterprise, and systematically trained management personnel and business backbones to improve the understanding of the basic knowledge of social responsibility management. We insist on not taking shortcuts, rejecting opportunism, being down-to-earth, investing for a long time and building up. Our company defines obstacles as 'any factor that hinders the team from improving productivity', and clearly emphasizes that the team should establish a continuous way to remove them. We've our individual specialist R&D enginners to meet any of the requriements. We firmly believe that: we're outstanding as we have been specialized.
  • Dibenzo-18-crown-6
    Dibenzo-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,
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  • Tetramethylammonium Chloride
    Tetramethylammonium chloride 99.0% (CAS Number 75-57-0) ,It is primarily used as a fluorination catalyst, a phase transfer catalyst, and a curing accelerator for powder coatings and epoxy polymer
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  • Tetrabutylammonium Chloride 95%
    Tetrabutylammonium chloride (TBACL) is a quaternary ammonium compound. The form ₆ was C₁₆H₃ ClN and its molecular weight was approximately 277.92 g/mol. It has certain hygroscopicity and is easily
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  • Tetrabutylammonium Tetrafluoroborate
    Tetrabutylammonium tetrafluoroborate (CAS 429-42-5 ), also known as TBATFB, is an organic chemical compound with the formula C₁₆H₃₆BF₄N. It is a quaternary ammonium salt with solubility in water and
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  • Benzyl Triethyl Ammonium Chloride
    Benzyltriethylammonium chloride (CAS 56-37-1), with a purity of 99.0% min, is a quaternary ammonium salt. It shares similar properties with inorganic salts, being water-soluble and capable of
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  • Benzyl Tributyl Ammonium Chloride
    Benzyl tributyl ammonium chloride (CAS 23616-79-7)is also known as BTBAC or BTBA, with the chemical formula C19H34ClN.It is a widely used quaternary ammonium salt. It is often used as a phase
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  • Triethylamine Hydrobromide
    Triethylamine 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 solution
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  • Methyl Triphenyl Phosphonium Bromide
    Methyl 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 interaromatic
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  • Tetrabutylammonium Hydroxide
    Tetrabutylammonium 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 phase
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  • 12- Crown Ether -4
    12-Crown-4 (12-crown-4) is an organic compound belonging to the crown ether family with a molecular formula of C8H16O4 and a molecular weight of 176.21 g/mol. Crown ether is a class of
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  • 15- Crown Ether -5
    15-crown-5 is a chemical with a molecular formula of C10H20O5, a molecular weight of 220.26 g/mol, and a CAS number of 33100-27-5. It belongs to the category of crown ether compounds, which are named
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  • 18- Crown Ether -6
    18-crown-6 is an organic compound with the formula C12H24O6. It belongs to the macrocyclic ether class, characterized by a large ring in the molecular structure, with multiple oxygen atoms
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Novel dibenzo-18-crown-6 ether functionalized bis-benzimidazole ......

Jul 19, 2015 · A series of novel 18-crown-6 ether functionalized bis-benzimidazole derivatives (3a–g) have been synthesized by reacting various substituted ortho-phenylene diamines and...

Dibenzo-18-crown-6 - PMC - National Center for Biotechnology …...

Oct 1, 2008 · Slow evaporation of dibenzo-18-crown-6 and 3- (trichlorostannyl)propanamide (0.2 mmol of each) in ethanol solution (15 ml) led to isolation of tiny colourless shards of (I)....

Synthesis of Phenacyl Esters by Using PTC and …...

Aug 13, 1996 · Phase transfer catalysis (PTC) uses catalytic amounts of phase transfer agents which facilitate interphase transfer of species, making reactions between reagents in two...

Perfluorocarbon Soluble Crown Ethers as Phase …...

Oct 15, 2008 · Fluorous derivatives of dibenzo-18-crown-6 ether were readily prepared by means of metal-catalyzed cross-coupling reactions, and then successfully applied as catalysts in...

Dibenzo-18-crown-6- catalyzed reactions...

The “light fluorous” dibenzo-18-crown-6 ether (14) has emerged as a stable and robust PTC catalyst, which can be recycled efficiently by fluorous solid-phase extraction, and gives better......

Perfluorocarbon Soluble Crown Ethers as Phase Transfer Catalysts...

Sep 9, 2008 · The ion-pair extraction equilibria of dibenzo-18-crown-6 (DB18C6) complexes of Na+, K+, Rb+ and Cs+ (M+) with picrate ion (Pic−) into 1,2-dichloroethane (1,2-DCE) have...

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