Derivative - Yuudoutai (English spelling) derivative

Japanese: 誘導体 - ゆうどうたい（英語表記）derivative

A compound obtained by changing part of the structure of a compound is called a derivative of the original compound. For example, chlorobenzene C ₆ H ₅ Cl, nitrobenzene C ₆ H ₅ NO ₂ , toluene C ₆ H ₅ CH ₃ , and phenol C ₆ H ₅ OH are derivatives of benzene, in which one hydrogen atom of the benzene molecule C ₆ H ₆ is replaced with a specific substituent.

The term derivative has recently come to be used in a very broad sense, and even compounds obtained through fairly complex changes are called derivatives as long as the original skeleton remains. Compounds produced by addition reactions, molecular compounds, etc., are also called derivatives of the original compound.

[Nakahara Katsunori]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

一つの化合物の構造の一部を変化させて得られる化合物を元の化合物の誘導体という。たとえば、ベンゼン分子C₆H₆の一つの水素原子を特定の置換基で置換したクロロベンゼンC₆H₅Cl、ニトロベンゼンC₆H₅NO₂、トルエンC₆H₅CH₃、フェノールC₆H₅OHなどはベンゼンの誘導体である。