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Darifenacin hydrobromide

Cat. No. M2613
Darifenacin hydrobromide Structure

UK-88525; Darifenacin HBr

Size Price Availability Quantity
10mg USD 63  USD70 In stock
50mg USD 216  USD240 In stock
100mg USD 360  USD400 In stock
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Quality Control
Biological Activity

Darifenacin is a selective M3 muscarinic receptor antagonist with pKi of 8.9. Darifenacin produces a concentration dependent increase in R123 (P-gp probe) accumulation in MDCK cells. Darifenacin stimulates ATPase activity in P-gp membrane in a clear concentration dependent response manner with an estimated ED50 value of 1.6 µM. Darifenacin (100 nM) shows a significantly greater permeability for darifenacin in the basolateral to apical direction resulting in an efflux ratio in BBMEC monolayers of approximately 2.6.

In vivo Darifenacin produces dose-dependent inhibition of amplitude of volume-induced bladder contractions(VIBCAMP), producing 35% inhibition at dose of 283.3 nmol/kg and maximal inhibition of approximately 50-55%. Darifenacin (0.1 mg/kg i.v.) reduces bladder afferent activity in both Aδ and C fibers in female Sprague-Dawley rats, the decrease in afferent spikes in C fibers may be more pronounced than that in Aδ fibers.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 507.46
Formula C28H30N2O2.HBr
CAS Number 133099-07-7
Purity 99.65%
Solubility DMSO 70 mg/mL
Storage at -20°C
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Keywords: Darifenacin hydrobromide, UK-88525; Darifenacin HBr supplier, AChR/AChE, inhibitors

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