List of Impurities by API index AB C D E F G H I J K L M N O P Q R S T U V W X Y Z Sacubitril Safinamide Salbutamol Salmeterol Sartan Saxagliptin Selumetinib Sertraline Sildenafil Silodosin Sitagliptin Solifenacin Sorafenib Spironolactone Stanozolol Stavudine Sugammadex Sulbactam Sulfadiazine Sulfamethoxazole Sulfasalazine Sulfolene Sulindac Sulpiride Sumatriptan Sunitinib