ühend, mis saadakse või teoreetiliselt tuletatakse mingist teisest ühendist (põhiühendist) ühe aatomi või aatomirühma asendamisel teise aatomi või aatomirühmaga
a substance derived from another by some specific modification of its molecule, usually by substitution or addition reactions
The application of this Regulation to caseins falling within CN code 3501 10 and to caseinates and other casein derivatives falling within CN code 3501 90 90 shall be deferred until a further decision by the Council.