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    Benztropine mesylate
    Benztropine mesylate

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    This product is for research use only, not for human use. We do not sell to patients.
    Number: - + Pieces(InventoryPieces)
    InvivoChem Cat #: V1248
    CAS #: 132-17-2Purity ≥98%

    Description: Benztropine mesylate (NSC-42199; ST-50997629; NSC 42199; ST 50997629; Cogentin; MLS000737056), the mesilate salt of Benztropine, is a highly potent dopamine transporter (DAT) inhibitor used for the treatment of symptoms of Parkinson's disease such as involuntary tremor and dystonia. It inhibits dopamine transporter with an IC50 of 118 nM. Benztropine is a synthetic compound derived from the combination of atropine and diphenhydramine that acts centrally to antagonize M1 muscarinic acetylcholine receptors. 

    References: J Med Chem. 2005 May 5;48(9):3337-43; Neurology. 1997 Apr;48(4):1077-81.

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    Molecular Weight (MW)403.53
    CAS No.132-17-2
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 50 mg/mL (123.9 mM)
    Water: 81 mg/mL (200.7 mM)
    Ethanol: 81 mg/mL (200.7 mM)
    Other info

    Chemical Name: (1R,3r,5S)-3-(benzhydryloxy)-8-methyl-8-azabicyclo[3.2.1]octane methanesulfonate


    InChi Code: InChI=1S/C21H25NO.CH4O3S/c1-22-18-12-13-19(22)15-20(14-18)23-21(16-8-4-2-5-9-16)17-10-6-3-7-11-17;1-5(2,3)4/h2-11,18-21H,12-15H2,1H3;1H3,(H,2,3,4)/t18-,19+,20+;

    SMILES Code: CN1[[email protected]@H]2C[[email protected]@H](OC(C3=CC=CC=C3)C4=CC=CC=C4)C[[email protected]]1CC2.OS(C)(=O)=O


    NSC42199; ST50997629; NSC-42199; ST-50997629; NSC 42199; ST 50997629; Benzatropine mesylate; Benzotropine mesylate; Benztropine methanesulfonate; Benztropine Mesylate; Cogentin; Cogentin mesylate; MLS000737056

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    In Vitro

    In vitro activity: Benztropine inhibits MTSET-induced inhibition of [3H]WIN binding to Wild-type dopamine transporter with EC50 of 28 μM in concentration-dependent manner. Benztropine has a protective ratio (EC50/inhibiting [3H]WIN (4 nm) binding with IC50) of 32 in X-A342C DAT construct by protecting Cys-342 from reaction. The apparent equilibrium dissociation constant of W84L DAT for benztropine is significantly higher than that of WT in the absence of sodium but this difference becomes smaller in the presence of 130 mM sodium in HEK-293 cells incubated with [3H]CFT. The apparent equilibrium dissociation constant of D313N DAT for benztropine displays a modest increase in the presence of 130 mM sodium in HEK-293 cells incubated with [3H]CFT. The apparent equilibrium dissociation constant value for benztropine at the double mutant (W84L D313N DAT) is in general close to that at one of the single mutants.

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    In VivoBenztropine (3.0 mg/day) is effective in improving tremor and the motor score of the United Parkinson's Disease Rating Scale without adverse events like leukopenia. Benztropine (5 mg/kg and 25 mg/kg) shows dose-dependent elevations in extracellular dopamine in the striatum of the rat. 
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    Formulation & Dosage

    J Med Chem. 2005 May 5;48(9):3337-43; Neurology. 1997 Apr;48(4):1077-81.

    These protocols are for reference only. InvivoChem does not independently validate these methods.


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