Stepwise -
1. CHO comes first in the seniority table.
2. Numbering
Clockwise - 2+4+5 = 11 Minimum (Correct)
AnitClockwise - 3+4+6 = 13
3. Write all substitute Prefix Name with Number
5-amino
4-hydroxymethyl
2-nitro
4. Main group SUffix Name
benzaldehyde
5. write the Prefix name with Number in alphabetical order.
The IUPAC name:
5-amino-4-hydroxymethyl-2-nitrobenzaldehyde
Therefore, the correct option is (3).
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