1-(Mercaptomethyl)cyclopropaneacetic acid

This 1-(Mercaptomethyl)cyclopropaneacetic acid (CAS 162515-68-6), supplied to pharmaceutical grade by Hunan HuaTeng Pharmaceutical Co., Ltd., is a Montelukast sodium intermediate -- Montelukast being used to prevent and manage asthma symptoms and relieve seasonal allergic rhinitis (hay fever). Sourced rather than manufactured directly by the supplier, it is tested to in-house standards and sold into North America, Western and Eastern Europe, and Asia.