By API Standards
- Sabinene
- Sacubitril
- Safinamide
- Salicylic Acid
- Salmeterol
- Samidorphan
- Sapropterin
- Saroglitazar
- Scopolamine
- Selexipag
- Sildenafil
- Simethicone
- Simvastatin
- Sirolimus
- Sisapronil
- Sitagliptin
- Sodium Fluoride
- Sofosbuvir
- Solifenacin
- Sorafenib
- Sotalol
- Spironolactone
- Stanozolol
- Strigolactone GR24
- Sudan III
- Sugammadex
- sulfachloropyrazine
- Sulfachloropyridazine
- Sulfadiazine
- Sulfadimethoxine
- Sulfadimethoxypyrimidine
- Sulfamerazine
- Sulfamethazine
- Sulfamethizole
- Sulfamethoxazole
- Sulfamonomethoxine
- Sulfapyridine
- Sulfathiazole
- Sulfonamides
- Sulpiride
- Sumatriptan
- Sunitinib
- Swertiamarin
- Syringin