IPA: //ˈaɪsoʊˌbjuːtɪl//
KK: /ˈaɪsoʊˌbjuːtɪl/
A type of hydrocarbon group that comes from isobutanol, often used in chemical processes.
Isobutyl is commonly used in the production of various chemicals and plastics.
Isobutyl is formed from "iso-" (meaning equal or same) and "butyl" (from Latin "butyricus", meaning butter, referring to butyric acid, which is found in butter). The term "isobutyl" refers to a specific structural arrangement of the butyl group that is a branched form of butane.
Think of 'iso-' meaning 'same' and 'butyl' relating to 'butter' — this helps you remember that isobutyl is a specific type of butyl group.
No commonly confused words.