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Origin: China

Cas No: 594839-88-0

Specification: 99%min

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  • Products Specification
  • Product Description
  • Property

    CAS No.: 594839-88-0 Formula: C14H7Cl2NO3 Molecular Weight: 308.11600


    Tafamidis (INN, or Fx-1006A, trade name Vyndaqel) is a drug for the amelioration of transthyretin-related hereditary amyloidosis (also familial amyloid polyneuropathy, or FAP), a rare but deadly neurodegenerative disease. The drug was approved by the European Medicines Agency in November 2011 and by the Japanese Pharmaceuticals and Medical Devices Agency in September 2013.
    The marketed drug, a meglumine salt, has completed an 18 month placebo controlled phase II/III clinical trial, and an 12 month extension study which provides evidence that tafamidis slows progression of Familial amyloid polyneuropathy. Tafamidis (20mg once daily) is used in adult patients with an early stage (stage 1) of familial amyloidotic polyneuropathy.
    Tafamidis was discovered in the Jeffery W. Kelly Laboratory at The Scripps Research Institute using a structure-based drug design strategy and was developed at FoldRx pharmaceuticals, a biotechnology company Kelly co-founded with Susan Lindquist. FoldRx was led by Richard Labaudiniere when it was acquired by Pfizer in 2010.
    Tafamidis functions by kinetic stabilization of the correctly folded tetrameric form of the transthyretin (TTR) protein. In patients with FAP, this protein dissociates in a process that is rate limiting for aggregation including amyloid fibril formation, causing failure of the autonomic nervous system and/or the peripheral nervous system (neurodegeneration) initially and later failure of the heart. Kinetic Stabilization of tetrameric transthyretin in familial amyloid polyneuropathy patients provides the first pharmacologic evidence that the process of amyloid fibril formation causes this disease, as treatment with tafamidis dramatically slows the process of amyloid fibril formation and the degeneration of post-mitotic tissue. Sixty% of the patients enrolled in the initial clinical trial have the same or an improved neurologic impairment score after six years of taking tafamidis, whereas 30% of the patients progress at a rate ≤ 1/5 of that predicted by the natural history. Importantly, all of the V30M FAP patients remain stage 1 patients after 6 years on tafamidis out of four stages of disease progression. [Data presented orally by Professor Coelho in Brazil in 2013]
    The process of wild type transthyretin amyloidogenesis also appears to cause senile systemic amyloidosis leading to cardiomyopathy as the prominent phenotype Some mutants of transthyretin, including V122I primarily found in individuals of African descent, are destabilizing enabling heterotetramer dissociation, monomer misfolding, and subsequent misassembly of transthyretin into a variety of aggregate structures including amyloid fibrils leading to familial amyloid cardiomyopathy. While there is clinical evidence from a small number of patients that tafamidis slows the progression of the transthyretin cardiomyopathies, this has yet to be demonstrated in a placebo controlled clinical trial. Pfizer has enrolled a placebo-controlled clinical trial to evaluate the ability of tafamidis to slow the progression of familial amyloid cardiomyopathy (mutant and wild type TTR aggregation) and senile systemic amyloidosis, a cardiomyopathy caused by the aggregation of wild type TTR (ClinicalTrials.gov identifier: NCT01994889).

    Basic Info

    Chemical Name tafamidis

    2-(3,5-Dichlorophenyl)-1,3-benzoxazole-6-carboxylic acid;

    CAS No. 594839-88-0
    Molecular Formula C14H7Cl2NO3
    Molecular Weight 308.11600
    PSA 63.33000
    LogP 4.49980


    Density 1.53

    Synthesis Route

    4-Amino-3-hydroxybenzoic acidtafamidis
    Benzo[d]oxazole-6-carboxylic acidtafamidis


    3,5-Dichlorobenzoyl chloride
    4-Amino-3-hydroxybenzoic acid
    Benzo[d]oxazole-6-carboxylic acid

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