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Question:

The IUPAC name of the compound: 4-methoxy-2-nitro benzaldehyde, 2-formyl-3-nitro anisole, 4-methoxy-6-nitro benzaldehyde, 2-formly-5-methoxy nitrobenzene

4-methoxy-6-nitro benzaldehyde

2-formly-5-methoxy nitrobenzene

4-methoxy-2-nitro benzaldehyde

2-formyl-3-nitro anisole

Solution:

Priority of aldehyde comes before ether so giving number 1 to aldehyde and 4 to ether in the given ring benzene the name is 4-methoxy-2-nitrobenzaldehyde.