Orphenadrine-d₃ hydrochloride 

Orphenadrine-d₃ (hydrochloride) is the deuterium labeled Orphenadrine hydrochloride^[1]. Orphenadrine hydrochloride is an orally active and non-competitive NMDA receptor antagonist (crosses the blood-brain barrier) with a K_i of 6.0 μM. Orphenadrine hydrochloride relieves stiffness, pain and discomfort due to muscle strains, sprains or other injuries. Orphenadrine hydrochloride is also used to relieve tremors associated with parkinson's disease. Orphenadrine citrate has good neuroprotective properties, can be used in studies of neurodegenerative diseases^[2][3].

1. This compound can be used as a tracer.
2. This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.

Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

308.86

C₁₈H₂₁D₃ClNO

1309283-23-5

341-69-5

[2H]C([2H])([2H])N(C)CCOC(C1=CC=CC=C1)C2=C(C=CC=C2)C.Cl

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.  [Content Brief]

  [2]. Pubill D, et al. Orphenadrine prevents 3-nitropropionic acid-induced neurotoxicity in vitro and in vivo. Br J Pharmacol. 2001 Feb;132(3):693-702.  [Content Brief]

  [3]. 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. 1995102(3):237-46.  [Content Brief]