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Thermodynamic

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Biochemical Assay Reagents

Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-W013851
    EDTA-OH

    		Biochemical Assay Reagents Others
    EDTA-OH is a chelating agent, which forms thermodynamically stable chelates with metal ions like calcium, magnesium, iron, zinc and copper . EDTA-OH exhibits ability of phytoremediation in heavy-metal-contaminated soils . EDTA-OH is able to cross brain-blood barrier .
    EDTA-OH
  • HY-138547
    DHPTA

    Diaminopropanoltetraacetic acid

    		 Biochemical Assay Reagents Others
    DHPTA (compound 3) can directly combine with lanthanide elements (Tb 3+, Ho 3+, Lu 3+) to form a strong chelating effect，in aqueous solution with a pH of 2.0-7.0 .
    DHPTA
  • HY-117074
    BMS-247243

    		Others Infection
    BMS-247243 is a β-lactam antibiotic against methicillin-resistant Staphylococcus aureus. This section introduces its synthesis method and biological properties. A practical synthetic method was developed to exchange iodide ions with chloride ions to form 4-thiopyridinol 6b with C-3 side chain, thereby effectively synthesizing methyl ester 12b with C-7 side chain. The reaction of 14 with methylthiolate lithium salt was catalyzed by Bu4NCl to form methyl ester 12b in high yield. Reaction with thiolate dianion gave the corresponding Michael addition byproduct, resulting in a decrease in the quality of thermodynamic product 12b. The diester 17 was synthesized by acid chlorination acylation of 16 with 12b in a two-phase system, avoiding the troublesome deprotection work such as using DCC or EDAC. During the TFA reaction to remove the protecting group 17, the bis acid 20 was unexpectedly obtained. The bis acid 19 reacted with 4-thiopyridinol 6b to form BMS-247243 in moderate yield. Alternatively, efficient coupling of diester 17 with 4-thiopyridinol 6b afforded crystalline diester 21 with little contamination from isomer 22. Double deprotection of diester 21 followed by crystallization afforded the bis-zwitterion BMS-247243 in high yield.
    BMS-247243

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