orphenadrine citrate

Modify Date: 2024-01-02 18:13:47

orphenadrine citrate Structure
orphenadrine citrate structure
Common Name orphenadrine citrate
CAS Number 4682-36-4 Molecular Weight 461.50500
Density 1.014 g/cm3 Boiling Point 363ºC at 760 mmHg
Molecular Formula C24H31NO8 Melting Point 132-134ºC
MSDS Chinese USA Flash Point 107.1ºC
Symbol GHS07 GHS08
GHS07, GHS08
Signal Word Warning

 Use of orphenadrine citrate


Orphenadrine citrate is a NMDA receptor antagonist with Ki of 6.0 +/- 0.7 μM, HERG potassium channel blocker.Target: NMDA ReceptorOrphenadrine has been used as an antiparkinsonian, antispastic and analgesic drug. Orphenadrine inhibits [3H]MK-801 binding to the phencyclidine (PCP) binding site of the N-methyl-D-aspartate (NMDA)-receptor in homogenates of postmortem human frontal cortex with a Ki-value of 6.0 +/- 0.7 microM. The NMDA receptor antagonistic effects of orphenadrine were assessed using concentration- and patch-clamp techniques on cultured superior colliculus neurones. Orphenadrine blocked open NMDA receptor channels with fast kinetics and in a strongly voltage-dependent manner. The IC50-value against steady state currents at -70 mV was 16.2 +/- 1.6 microM (n = 6). Orphenadrine exhibited relatively fast, concentration-dependent open channel blocking kinetics (Kon 0.013 +/- 0.002 10(6) M-1S-1) whereas the offset rate was concentration-independent (Koff 0.230 +/- 0.004 S-1) [1]. Orphenadrine competitively inhibited [3H]nisoxetine binding in rat vas deferens membranes (Ki = 1.05+/-0.20 microM). It can be concluded that orphenadrine, at low micromolar concentrations, interacts with the noradrenaline reuptake system inhibiting its functionality and thus potentiating the effect of noradrenaline [2].

 Names

Name orphenadrine citrate
Synonym More Synonyms

 orphenadrine citrate Biological Activity

Description Orphenadrine citrate is a NMDA receptor antagonist with Ki of 6.0 +/- 0.7 μM, HERG potassium channel blocker.Target: NMDA ReceptorOrphenadrine has been used as an antiparkinsonian, antispastic and analgesic drug. Orphenadrine inhibits [3H]MK-801 binding to the phencyclidine (PCP) binding site of the N-methyl-D-aspartate (NMDA)-receptor in homogenates of postmortem human frontal cortex with a Ki-value of 6.0 +/- 0.7 microM. The NMDA receptor antagonistic effects of orphenadrine were assessed using concentration- and patch-clamp techniques on cultured superior colliculus neurones. Orphenadrine blocked open NMDA receptor channels with fast kinetics and in a strongly voltage-dependent manner. The IC50-value against steady state currents at -70 mV was 16.2 +/- 1.6 microM (n = 6). Orphenadrine exhibited relatively fast, concentration-dependent open channel blocking kinetics (Kon 0.013 +/- 0.002 10(6) M-1S-1) whereas the offset rate was concentration-independent (Koff 0.230 +/- 0.004 S-1) [1]. Orphenadrine competitively inhibited [3H]nisoxetine binding in rat vas deferens membranes (Ki = 1.05+/-0.20 microM). It can be concluded that orphenadrine, at low micromolar concentrations, interacts with the noradrenaline reuptake system inhibiting its functionality and thus potentiating the effect of noradrenaline [2].
Related Catalog
References

[1]. Kornhuber, J., et al., Orphenadrine is an uncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist: binding and patch clamp studies. J Neural Transm Gen Sect, 1995. 102(3): p. 237-46.

[2]. Pubill, D., et al., Assessment of the adrenergic effects of orphenadrine in rat vas deferens. J Pharm Pharmacol, 1999. 51(3): p. 307-12.

 Chemical & Physical Properties

Density 1.014 g/cm3
Boiling Point 363ºC at 760 mmHg
Melting Point 132-134ºC
Molecular Formula C24H31NO8
Molecular Weight 461.50500
Flash Point 107.1ºC
Exact Mass 461.20500
PSA 133.60000
LogP 2.75980
Storage condition 2-8°C

 Safety Information

Symbol GHS07 GHS08
GHS07, GHS08
Signal Word Warning
Hazard Statements H302-H351
Precautionary Statements P281
Hazard Codes Xi:Irritant;
Risk Phrases R22;R40
Safety Phrases S22-S36
RIDADR UN 3249
WGK Germany 3
Packaging Group III
Hazard Class 6.1(b)

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 Synonyms

Orphenadrine Citrate
Orphenadrine Citrate Salt
MFCD00079197
EINECS 225-137-5
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