Manganese chloride (CAS No 7773-01-5) is commonly employed in biomedical research to study its effects on cellular processes and oxidative stress pathways This inorganic compound originates from manganese a crucial trace element in biological systems and functions by modulating enzyme activity particularly those involved in neurotransmitter synthesis and antioxidant defenses Its mechanism of action includes interactions with various proteins and pathways involved in cellular metabolism and redox homeostasis In vitro manganese chloride exhibits activity in the nanomolar to low micromolar range showing potential effects on cell viability and function It is widely used in experimental models such as cultured cell lines and animal studies serving purposes such as drug screening and elucidating the role of manganese in neurological and systemic disorders Experimental concentrations typically depend on the specific research design