1. 左西替利嗪杂质3 DiHCl(西替利嗪EP杂质B DiHCl)

左西替利嗪杂质3 DiHCl(西替利嗪EP杂质B DiHCl)

Levocetirizine Impurity 3 DiHCl (Cetirizine EP Impurity B DiHCl)