MRS2179 ammonium salt is primarily used in research studies focused on understanding the role of purinergic receptors, particularly the P2Y1 receptor, in various physiological and pathological processes. It acts as a selective antagonist for the P2Y1 receptor, making it a valuable tool in investigating the receptor's function in platelet aggregation, cardiovascular diseases, and neurotransmission. Researchers utilize it to explore its potential therapeutic applications in conditions like thrombosis, where inhibiting platelet activation could be beneficial. Additionally, it is employed in studies examining its effects on smooth muscle contraction, neuronal signaling, and inflammation, providing insights into its broader implications in cellular communication and disease mechanisms.