Orphenadrine Hydrochloride (CAS No 341-69-5) is a chemical compound studied in the field of pharmacology and neuroscience for its role as a muscle relaxant and anticholinergic agent It originates from the synthesis of antihistamines and works by blocking NMDA receptors and reducing signaling at neural pathways specifically inhibiting muscarinic acetylcholine receptors This dual mechanism helps in the modulation of neuronal activity and muscle relaxation Common in vitro activity is observed in the nanomolar to low micromolar range indicating its potency Orphenadrine Hydrochloride is frequently used in cell models and animal studies to understand its therapeutic potential and neuroprotective effects It s also applied in drug screening to evaluate its efficacy and safety profile Experimental concentrations typically depend on the specific research design ensuring adaptable application in various scientific investigations