Nomenclature of Heterocyclic Compounds

[@blessingchidera2069]

This is very understandable.
Thank you, Sir.

[@OmAyman-s6d]

شرح في قمة الروعة..شكر الله لك

[@kengchiaming6471]

Clear and direct. Thank you.

[@arhamali5080]

Thanks allot sir I understand very well 😊😊😊