Ambroxol EP Impurity D Catalogue A253654 CAS 1384955-66-1 M.W 414.57 M.F C13H18Br2N2O.HCl Specifications FAQs cis-4-((2-amino-3,5-dibromobenzyl)amino)cyclohexan-1-ol hydrochlorideCAS: (free base:107814-37-9)