| SN-38 | 86639-52-3 | Cytostatic antibiotics | 2 |
| Secobarbital | 76-73-3 | Barbiturates | 2 |
| Semaglutide Secondary Acylation Intermediate | | | 2 |
| Shikonin | 517-89-5 | Other anticancer drugs | 2 |
| Siberian ginseng root | | Herbal remedies | 2 |
| Simethicone Emulsion 30% | | | 2 |
| Siponimod | 1230487-00-9 | Immunosuppressants | 2 |
| Sodium Acetylated Hyaluronate | 220119-17-5 | | 2 |
| Sodium Cholesteryl sulfate | 2864-50-8 | Lipid-lowering agents | 2 |
| Sodium Tetradecyl Sulfate | 139-88-8 | Sclerosing agents | 2 |
| Sodium molybdate dihydrate | 10102-40-6 | Other essential nutrients | 2 |
| Sodium selenite | 10102-18-8 | Other essential nutrients | 2 |
| Sofalcone | 64506-49-6 | Other gastrointestinal agents | 2 |
| Solithromycin | 760981-83-7 | Macrolides | 2 |
| Sorafenib intermediate | 33818-15-4 | | 2 |
| Sorbic acid | 110-44-1 | Disinfectants | 2 |
| Sorbitan Monostearate | 1338-41-6 | Dermatics | 2 |
| Sorbitan Oleate | | Dermatics | 2 |
| Sorbitan trioleate | 26266-58-0 | Dermatics | 2 |
| Sotorasib | 1610526-40-8 | Protein kinase inhibitors | 2 |
| Soybean oil | | Other lipid-lowering agents | 2 |
| Spinosad | 168316-95-8 | Scabicides | 2 |
| Spirulina powder | | Herbal remedies | 2 |
| Stanozolol | 10418-03-8 | Androgens | 2 |
| Sulfachloropyrazine | | Sulfonamides and trimethoprim | 2 |
| Tafamidis | 594839-88-0 | Indifferent resources | 2 |
| Temocapril | 111902-57-9 | ACE inhibitors | 2 |
| Teniposide | 29767-20-2 | Antineoplastics | 2 |
| Tetrakis(triphenylphosphine)palladium | 202138-50-9 | | 2 |
| Thiamphenicol | 15318-45-3 | Other anti-infective agents | 2 |
| Thiopental | 76-75-5 | Intravenous anesthetics | 2 |
| Thiotriazolin Acid | 357172-63-5 | Hypothalamic hormones | 2 |
| Tiamuline | 55297-95-5 | Antibacterials | 2 |
| Titanium Oxide | 13463-67-7 | | 2 |
| Titanium dioxide | | Indifferent resources | 2 |
| Tolazamide | 1156-19-0 | Sulfonylureas | 2 |
| Toltrazuril | 69004-03-1 | | 2 |
| Trabectedin | 114899-77-3 | Oncolytics | 2 |
| Tragacanth | 9000-65-1 | Excipients | 2 |
| Tranilast | 53902-12-8 | Immunosuppressants | 2 |