| Sodium diphosphate Salt and Compound With | 7722-88-5 | 4Na.O7P2 | 265.901 |
| Sodium disulfite Salt and Compound With | 7681-57-4 | 2Na.O5S2 | 190.109 |
| Sodium ferulate Salt and Compound With | 24276-84-4 | C10H9O4.Na | 216.168 |
| Sodium fluoride Salt and Compound With | 7681-49-4 | F.Na | 41.988 |
| Sodium fluorophosphate Salt and Compound With | 10163-15-2 | FO3P.2Na | 143.949 |
| Sodium hexafluorophosphate Salt and Compound With | 21324-39-0 | F6P.Na | 167.952 |
| Sodium hydrogencarbonate Salt and Compound With | 144-55-8 | CHO3.Na | 84.006 |
| Sodium hydrogensulfite Salt and Compound With | 7631-90-5 | HO3S.Na | 104.062 |
| Sodium hydroxide Salt and Compound With | 1310-73-2 | HO.Na | 39.997 |
| Sodium hypochlorite Salt and Compound With | 7681-52-9 | ClO.Na | 74.442 |
| Sodium iodide Salt and Compound With | 7681-82-5 | I.Na | 149.894 |
| Sodium lactate Salt and Compound With | 72-17-3 | C3H5O3.Na | 112.06 |
| Sodium metavanadate Salt and Compound With | 13718-26-8 | Na.O3V | 121.931 |
| Sodium molybdate dihydrate Salt and Compound With | 10102-40-6 | 2H2O.MoO4.2Na | 241.946 |
| Sodium nitrate Salt and Compound With | 7631-99-4 | NO3.Na | 84.994 |
| Sodium nitrite Salt and Compound With | 7632-00-0 | NO2.Na | 68.995 |
| Sodium perchlorate Salt and Compound With | 7601-89-0 | ClO4.Na | 122.439 |
| Sodium pyrophosphate decahydrate Salt and Compound With | 13472-36-1 | 10H2O.4Na.O7P2 | 446.051 |
| Sodium selenate Salt and Compound With | 13410-01-0 | 2Na.O4Se | 188.936 |
| Sodium selenide Salt and Compound With | 1313-85-5 | 2Na.Se | 124.94 |
| Sodium silicate Salt and Compound With | 1344-09-8 | 2Na.O3Si | 122.063 |
| Sodium sulfate Salt and Compound With | 7757-82-6 | 2Na.O4S | 142.043 |
| Sodium sulfide (anhydrous) Salt and Compound With | 1313-82-2 | 2Na.S | 78.047 |
| Sodium sulfite Salt and Compound With | 7757-83-7 | 2Na.O3S | 126.044 |
| Sodium thiosulfate Salt and Compound With | 7772-98-7 | 2Na.O3S2 | 158.111 |
| Sodium thiosulfate pentahydrate Salt and Compound With | 10102-17-7 | 5H2O.2Na.O3S2 | 248.186 |
| Sodium(1+) Organic/Inorganic Small Molecule | 17341-25-2 | Na | 22.99 |
| Sotalol Organic/Inorganic Small Molecule | 3930-20-9 | C12H20N2O3S | 272.37 |
| Spathulenol Organic/Inorganic Small Molecule | 6750-60-3 | C15H24O | 220.356 |
| Spermidine Organic/Inorganic Small Molecule | 124-20-9 | C7H19N3 | 145.25 |
| Spiroxamine Organic/Inorganic Small Molecule | 118134-30-8 | C18H35NO2 | 297.483 |
| Stavudine Organic/Inorganic Small Molecule | 3056-17-5 | C10H12N2O4 | 224.216 |
| Streptozocin Organic/Inorganic Small Molecule | 18883-66-4 | C8H15N3O7 | 265.222 |
| Strontium Element | 7440-24-6 | Sr | 87.62 |
| Strontium-88 Element | 14119-10-9 | [88Sr] | 87.906 |
| Styrene Organic/Inorganic Small Molecule | 100-42-5 | C8H8 | 104.152 |
| Succinic acid Organic/Inorganic Small Molecule | 110-15-6 | C4H6O4 | 118.088 |
| Sucrose Organic/Inorganic Small Molecule | 57-50-1 | C12H22O11 | 342.297 |
| Sulfadiazine Organic/Inorganic Small Molecule | 68-35-9 | C10H10N4O2S | 250.283 |
| Sulfamerazine Organic/Inorganic Small Molecule | 127-79-7 | C11H12N4O2S | 264.31 |