SynonymsLevocetirizine Impurity Close Levocetirizine Impurity Related products (R)-(4-Chlorophenyl)(phenyl)methanamine M.F. M.W. 217.7 CAT# AR-L06146 CAS# 163837-57-8 Levocetirizine N-(4-methylphenyl)sulfonyl Impurity M.F. M.W. 440.99 CAT# AR-L06207 CAS# 474654-20-1