Nomenclature of Heterocyclic Compounds

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[@blessingchidera2069]

This is very understandable. Thank you, Sir.

[@user-yj3fb8fz6f]

شرح في قمة الروعة..شكر الله لك

[@kengchiaming6471]

Clear and direct. Thank you.

[@arhamali5080]

Thanks allot sir I understand very well 😊😊😊