Macitentan 5-Desbromo-5-Chloro Impurity Catalogue M102652 CAS N/A M.W 543.82 M.F C19H20BrClN6O4S Specifications FAQs N-[5-(4-Bromophenyl)-6-[2-[(5-chloro-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]-N -propyl-sulfamide