Alosetron HCl(CAS: 122852-69-1)

Alosetron HCl is a white or off-white crystalline powder with a molecular weight of approximately 417.8 g/mol. It has a pKa of about 2.5 and is poorly soluble in water but soluble in organic solvents. Alosetron HCl is a selective serotonin (5-HT₃) receptor antagonist and exhibits low reactivity under normal conditions.

Alosetron HCl is synthesized via multi-step processes involving protection, functionalization, and deprotection of key intermediates. The synthesis typically requires careful control of reaction conditions, such as temperature and solvent choice, to achieve high yields and selectivity. Commonly used reagents include acetyl chloride, ethanol, and various protecting groups.

Alosetron HCl is primarily used in the pharmaceutical industry for the treatment of irritable bowel syndrome with constipation (IBS-C). It is also studied for potential applications in the research of serotonin receptor pharmacology and related neurological conditions.

Alosetron HCl should be handled under mechanical ventilation to avoid inhalation of dust. Use appropriate personal protective equipment (PPE), including gloves, safety glasses, and a lab coat. Store in a tightly sealed container at controlled room temperature. In case of accidental spill, avoid direct contact and clean up using appropriate absorbent materials, followed by thorough rinsing with water.