Answer

✅ Systematic IUPAC Names of the Given Organic Molecules

🧪 Structure 1

• 4-carbon chain with an aldehyde group on carbon 1.
• Methyl group (–CH₃) on carbon 2.
• Hydroxy groups (–OH) on carbons 3 and 4.

Correct IUPAC Name: 3,4-dihydroxy-2-methylbutanal

🧪 Structure 2

• 5-carbon straight chain with an aldehyde at carbon 1.
• Hydroxy groups (–OH) on carbons 4 and 5.

Correct IUPAC Name: 4,5-dihydroxypentanal

🧪 Structure 3

• 5-carbon chain with an aldehyde group on carbon 1.
• Hydroxy group on carbon 3.
• Methyl group on carbon 4.

Correct IUPAC Name: 3-hydroxy-4-methylpentanal

📘 Summary Table