Radical name |
Formula |
Based on rule no. |

Quinazolinyl | B-2.11, B-5.11 | |

Quinolinediyl | B-2.11, B-5.11 | |

Quinolizinyl | B-2.11, B-5.11 | |

Quinolyl | B-2.11, B-5.11 | |

Quinoxalinyl | B-2.11, B-5.11 | |

Quinuclidinyl | B-2.11, B-5.11 | |

Rubicenyl | A-21.1, A-24.2 | |

Salicyl ( preferred to 2-hydroxybenzyl) |
A-13.3, C-201.4 | |

Salicylidene ( preferred to 2-hydroxybenzylidene) |
A-13.4, C-201.4 | |

Salicyloyl ( preferred to o-hydroxybenzoyl) |
C-411.1 | |

Sarcosyl | C-421.1 | |

Sebacoyl ( unsubstituted only) |
C-404.1 | |

Seleneno | C-701.1 | |

Selenino | C-701.1 | |

Seleninyl | C-701.1 | |

Seleno | C-701.1 | |

Selenocyanato | C-833.1 | |

Selenoformyl | C-701.1 | |

Selenonio | (ion) | C-82.1, C-85, C-87.1 |

Selenono | C-701.1 | |

Selenonyl | C-701.1 | |

Selenoureido | C-971.2, C-974.1 | |

Selenoxo | C-701.1 | |

Semicarbazido | C-981.2 | |

Semicarbazono | C-982.1 | |

Seryl | C-421.1 | |

Stearoyl ( unsubstituted only) |
C-404.1 | |

Styryl | A-13.3 | |

Suberoyl ( unsubstituted only) |
C-404.1 | |

Succinamoyl | C-431.2 | |

Succinimido | C-827.2 | |

Succinimidoyl | C-451.2 | |

Succinyl ( preferred to butanedioyl) |
C-404.1 | |

Sulfamoyl | C-641.8 | |

Sulfanilamido | C-641.8 | |

Sulfanilyl | C-641.1, C-641.7 | |

Sulfenamoyl | C-641.8 | |

Sulfeno | C-641.2 | |

Sulfido | (ion) | C-86.2, C-511.4 |

Sulfinamoyl | C-641.8 | |

Sulfino | C-641.2 | |

Sulfinyl | C-631.2, C-661.3 | |

Sulfo | C-10.3, C-641.2 | |

Sulfoamino | C-661.2 | |

Sulfonato | C-86.1 | |

Sulfonio | (ion) | C-82.1, C-85, C-87.1 |

Sulfonyl | C-631.1, C-631.2, C-661.3 | |

Sulfonyldioxy | C-72.2, C-205.2 |

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