Used primarily in research settings to investigate adrenergic receptor activity, this compound serves as a selective antagonist for alpha-adrenergic receptors. It is employed to examine vascular responses, regulate smooth muscle contraction, and study neurotransmission mechanisms. Due to its structural similarity to phentolamine, it helps in developing new agents targeting hypertension, pheochromocytoma, and erectile dysfunction. Its application extends to laboratory tools for blocking sympathetic nervous system effects in cellular and animal models.