L-Canavanine is primarily used in biochemical research to study its effects on cellular processes due to its structural similarity to L-arginine. It acts as a competitive inhibitor of arginine-dependent enzymes, making it valuable in exploring metabolic pathways and enzyme functions. Additionally, it is employed in plant biology research to understand its role as a natural defense mechanism in certain plants against herbivores and pathogens. L-Canavanine is also investigated for its potential anticancer properties, as it can disrupt protein synthesis and induce apoptosis in certain cancer cells. Furthermore, its immunomodulatory effects are studied in the context of autoimmune diseases and immune system regulation.