| spiro[furo[2,3-f][1,3]benzodioxole-7,3'-indol]-2'(1'H)-one | C₁₆H₁₁NO₄ | 281.267 g/mol |
| Spiro[furo[2,3-g]-1,4-benzodioxin-8(7H),3'-[3H]indol]-2'(1'H)-one, 2,3-dihydro | C₁₇H₁₃NO₄ | 295.294 g/mol |
| Spiro[naphtho[1,2-b][1,4]oxathiine-2,3'-piperidine]-5,6-dione | C₁₆H₁₅NO₃S | 301.367 g/mol |
| Spiro[naphtho[1,2-b][1,4]oxathiine-2,4'-piperidine]-5,6-dione | C₁₆H₁₅NO₃S | 301.367 g/mol |
| Spiro[piperidine-4,4'-pyrido[2,3-d][1,3]oxazin]-2'(1'H)-one | C₁₁H₁₃N₃O₂ | 219.244 g/mol |
| Spiro[pyrrolidine-3,3'-indoline]-2,2',5-trione | C₁₁H₈N₂O₃ | 216.196 g/mol |
| Squaraine | C₄H₄O₂ | 84.074 g/mol |
| Stannane, tributyl(1-ethoxyethenyl)- | C₁₆H₃₄OSn | 361.158 g/mol |
| Stannane, tributyl-1-cyclohexen-1-yl- | C₁₈H₃₆Sn | 371.197 g/mol |
| Stannane, tributyl-3-thienyl- | C₁₆H₃₀SSn | 373.194 g/mol |
| Stannane, tributyl[5-(1,3-dioxolan-2-yl)-2-furanyl]- | C₁₉H₃₄O₃Sn | 429.189 g/mol |
| Stannane, trimethyl(4-methylphenyl)- | C₁₀H₁₆Sn | 254.949 g/mol |
| Stannane, trimethylphenyl- | C₉H₁₄Sn | 240.922 g/mol |
| Stannanecarbonitrile, tributyl- | C₁₃H₂₇NSn | 316.077 g/mol |
| Stannous cation | Sn+2 | 118.711 g/mol |
| Stannous Chloride | Cl₂Sn | 189.617 g/mol |
| Staurosporine | C₂₈H₂₆N₄O₃ | 466.541 g/mol |
| Stearic Acid | C₁₈H₃₆O₂ | 284.484 g/mol |
| Stearoxypropyl dimethylamine | C₂₃H₄₉NO | 355.651 g/mol |
| Stearoyl chloride | C₁₈H₃₅ClO | 302.93 g/mol |
| Stearyl Alcohol | C₁₈H₃₈O | 270.501 g/mol |
| Stearyl methacrylate | C₂₂H₄₂O₂ | 338.576 g/mol |
| Stibine oxide, triphenyl- | C₁₈H₁₅OSb | 369.077 g/mol |
| Stk074598 | C₁₂H₁₂N₂O₂ | 216.24 g/mol |
| Stk076603 | C₆H₈F₃N₅O | 223.158 g/mol |
| Stk087815 | C₁₈H₁₇NO₄ | 311.337 g/mol |
| Stk362959 | C₁₄H₂₁NO₂ | 235.327 g/mol |
| Stk367969 | C₁₆H₂₀N₂O₄ | 304.346 g/mol |
| Streptokinase | C₁₁H₁₉NO₂ | 197.278 g/mol |
| Streptopyrrole | C₁₄H₁₂ClNO₄ | 293.706 g/mol |
| Strontium | Sr | 87.62 g/mol |
| Strontium cation | Sr+2 | 87.62 g/mol |
| Styrene | C₈H₈ | 104.152 g/mol |
| Styrene Oxide | C₈H₈O | 120.151 g/mol |
| Styrene-4-sulfonyl chloride | C₈H₇ClO₂S | 202.662 g/mol |
| Styrylamine | C₈H₉N | 119.167 g/mol |
| Styrylbenzothiazole | C₁₅H₁₁NS | 237.327 g/mol |
| Styrylboric acid | C₈H₉BO₃ | 163.969 g/mol |
| Suberanilic Acid | C₁₄H₁₉NO₃ | 249.31 g/mol |
| Suberic acid | C₈H₁₄O₄ | 174.196 g/mol |
| Succinamate | C₄H₆NO₃- | 116.096 g/mol |
| Succinamic acid | C₄H₇NO₃ | 117.104 g/mol |
| Succinate | C₄H₄O₄-2 | 116.072 g/mol |
| Succinic Acid | C₄H₆O₄ | 118.088 g/mol |
| Succinic acid Fluorenylmethyl Ester | C₁₈H₁₆O₄ | 296.322 g/mol |
| Succinic acid mono-[3-(2-chloro-phenyl)-6-(2,4-difluoro-phenoxy)-4-(2-hydroxy-propylamino)-pyrazolo[3,4-d]pyrimidin-1-ylmethyl]ester | C₂₅H₂₂ClF₂N₅O₆ | 561.929 g/mol |
| Succinic Acid Monohex-3-enyl Ester | C₁₀H₁₆O₄ | 200.234 g/mol |
| Succinic anhydride | C₄H₄O₃ | 100.073 g/mol |
| Succinimide | C₄H₅NO₂ | 99.089 g/mol |
| Succinimide, N-(p-phenetidinomethyl)- | C₁₃H₁₆N₂O₃ | 248.282 g/mol |
| Succinimido 1-[(2'-t-butoxycarbonylbiphenyl-4-yl)methyl]-2-butyl-4-hydroxymethylimidazole-5-carboxylate | C₃₁H₃₅N₃O₇ | 561.635 g/mol |
| Sucrose | C₁₂H₂₂O₁₁ | 342.297 g/mol |
| Sufugolix | C₃₆H₃₁F₂N₅O₄S | 667.738 g/mol |
| Sulfamic Acid | H₃NO₃S | 97.095 g/mol |
| Sulfamic acid 2,4,6-trichloro-phenyl ester | C₆H₄Cl₃NO₃S | 276.528 g/mol |
| Sulfamic acid 2-(8-quinolinyloxy)ethyl ester | C₁₁H₁₂N₂O₄S | 268.294 g/mol |
| Sulfamic acid 3-(1H-imidazol-1-yl)phenyl ester | C₉H₉N₃O₃S | 239.256 g/mol |
| Sulfamic acid 3-[2-cyano-1-(3,5-dimethoxy-phenyl)-vinyl]-phenyl ester | C₁₇H₁₆N₂O₅S | 360.391 g/mol |
| Sulfamide | H₄N₂O₂S | 96.111 g/mol |
| Sulfamide, [4-(1-methylethyl)phenyl]-(9CI) | C₉H₁₄N₂O₂S | 214.29 g/mol |
| Sulfanilamide | C₆H₈N₂O₂S | 172.209 g/mol |
| Sulfanilic acid | C₆H₇NO₃S | 173.193 g/mol |
| Sulfaniumylazanide | H₃NS | 49.098 g/mol |
| Sulfate Ion | O₄S-2 | 96.063 g/mol |
| Sulfate, hydrogen | HO₄S- | 97.071 g/mol |
| Sulfinato sulfite | O₅S₂-2 | 144.129 g/mol |
| Sulfinpyrazone | C₂₃H₂₀N₂O₃S | 404.491 g/mol |
| Sulfite | O₃S-2 | 80.064 g/mol |
| Sulfo(2,3-dihydro-5-benzofuranyl)acetyl chloride | C₁₀H₉ClO₅S | 276.697 g/mol |
| Sulfolane | C₄H₈O₂S | 120.173 g/mol |
| Sulfomaleic anhydride | C₄H₂O₆S | 178.121 g/mol |
| Sulfonium | H₃S+ | 35.091 g/mol |
| Sulfooxy sulfate | HO₈S₂- | 193.134 g/mol |
| Sulfotep | C₈H₂₀O₅P₂S₂ | 322.325 g/mol |
| Sulfur | S | 32.067 g/mol |
| Sulfur cyanide (S2(CN)2) | C₂N₂S₂ | 116.17 g/mol |
| Sulfur dichloride | Cl₂S | 102.973 g/mol |
| Sulfur dicyanide | C₂N₂S | 84.103 g/mol |
| Sulfur Dioxide | O₂S | 64.065 g/mol |
| Sulfur trioxide | O₃S | 80.064 g/mol |
| Sulfur, trifluoro(N-methylmethanaminato)- | C₂H₆F₃NS | 133.138 g/mol |
| Sulfuric Acid | H₂O₄S | 98.079 g/mol |
| Sulfuric acid, dibutyl ester | C₈H₁₈O₄S | 210.295 g/mol |
| Sulfuric acid, monobutyl ester | C₄H₁₀O₄S | 154.187 g/mol |
| Sulfurochloridate | ClO₃S- | 115.517 g/mol |
| Sulfurous Acid | H₂O₃S | 82.08 g/mol |
| Sulfuryl chloride | Cl₂O₂S | 134.971 g/mol |
| Sulfuryl diazide | N₆O₂S | 148.107 g/mol |
| Sulfuryl fluoride | F₂O₂S | 102.061 g/mol |
| Sulmazole | C₁₄H₁₃N₃O₂S | 287.344 g/mol |
| Sulotroban | C₁₆H₁₇NO₅S | 335.381 g/mol |
| Sulphenone | C₁₂H₉ClO₂S | 252.722 g/mol |
| Sulphobenzoic anhydride | C₁₄H₁₀O₉S₂ | 386.359 g/mol |
| Sulphonyl diacetonitrile | C₄H₄N₂O₂S | 144.155 g/mol |
| Sulpiride | C₁₅H₂₃N₃O₄S | 341.433 g/mol |
| Sunitinib Impurity 8 | C₁₂H₁₉N₃O₂ | 237.303 g/mol |
| Suprofen | C₁₄H₁₂O₃S | 260.314 g/mol |
| Suprofen methyl ester | C₁₅H₁₄O₃S | 274.341 g/mol |
| Synephrine | C₉H₁₃NO₂ | 167.208 g/mol |
| Syringaldehyde | C₉H₁₀O₄ | 182.175 g/mol |
