Alkyl d aẓaṛ amyiwen n tugdut yesɛan abelkim n ukaṛbun d uhidṛujin yettwasnin deg telɣa n tezrart, Talkylin tgint-d (xeddment-d) tazrart tasnulut, Yerna tesɛa tagda CnH2n+1 Timeskiwt n wAlkylen == Ismawen n wAlkylen ==