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Cyclobenzaprine hydrochloride

Cat. No. M3646
Cyclobenzaprine hydrochloride Structure

Cyclobenzaprine HCl

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500mg USD 120 In stock
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Quality Control
  • Current batch:
  • Purity >98%
  • COA
  • MSDS
Biological Activity

Cyclobenzaprine is a skeletal muscle relaxant and a central nervous system (CNS) depressant. Cyclobenzaprine was thought to be an alpha 2-adrenoceptor agonist that reduced muscle tone by decreasing the activity of descending noradrenergic neurons. Cyclobenzaprine reduced the monosynaptic reflex amplitude dose dependently and this effect was not inhibited by the alpha 2-adrenoceptor antagonists idazoxan and yohimbine. Cyclobenzaprine-induced monosynaptic reflex depression was not attenuated by noradrenergic neuronal lesions produced by 6-hydroxydopamine. Cyclobenzaprine is a 5-HT2 receptor antagonist and that its muscle relaxant effect is due to inhibition of serotonergic, not noradrenergic, descending systems in the spinal cord. The inhibitory effects of cyclobenzaprine on mono- and polysynaptic reflex potentials are due to the inhibition of descending serotonergic systems through 5-HT(2) receptors in the spinal cord.

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 311.85
Formula C20H21N.HCl
CAS Number 6202-23-9
Purity >98%
Solubility DMSO
Storage at -20°C

Tricyclic analogs cyclobenzaprine, amitriptyline and cyproheptadine inhibit the spinal reflex transmission through 5-HT(2) receptors.
Honda M, et al. Eur J Pharmacol. 2003 Jan 1;458(1-2):91-9. PMID: 12498911.

Cyclobenzaprine, a centrally acting muscle relaxant, acts on descending serotonergic systems.
Kobayashi H, et al. Eur J Pharmacol. 1996 Sep 5;311(1):29-35. PMID: 8884233.

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Keywords: Cyclobenzaprine hydrochloride, Cyclobenzaprine HCl supplier, 5-HT Receptor, inhibitors

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