IUPAC and NomenclaturemediumMCQ SINGLE⭐ Must-Do

When an aldehyde group () acts as a subordinate substituent, under what specific condition is the prIUPAC and Nomenclature Chemistry Question

Question

When an aldehyde group ($-CHO$) acts as a subordinate substituent, under what specific condition is the prefix "formyl" used instead of "oxo"?

Answer: B

💡 Solution & Explanation

"Formyl" refers to the entire $-CHO$ group acting as a branch off the parent chain. "Oxo" is used when the carbon atom of the $-CHO$ group is already counted as part of the principal carbon chain skeleton.

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