Sure! Let's break down the IUPAC naming of the given compound step by step: --- ## **Step 1: Identify the Longest Carbon Chain** - The longest continuous chain contains **6 carbons** → **hexane**. --- ## **Step 2: Identify the Main Functional Groups and Substituents** - There's an **OH group** (alcohol) at carbon 3 → **hexan-3-ol**. - There's a **Cl (chloro) group** at carbon 5. - There's a **methyl group** at carbon 4. --- ## **Step 3: Number the Chain** - Number the chain so that the main functional group (OH) gets the lowest possible number. - Numbering from left to right (as shown in the image): 1. C1: (leftmost) 2. C2 3. C3: **OH** 4. C4: **methyl** 5. C5: **Cl** 6. C6 --- ## **Step 4: Assign Stereochemistry** - The compound has three chiral centers at C3, C4, and C5. - The configuration given is **(3R,4R,5R)**. --- ## **Step 5: Write the IUPAC Name** Combine all the information: - Substituents (in alphabetical order): **5-chloro, 4-methyl** - Parent name: **hexan-3-ol** - Stereochemistry: **(3R,4R,5R)** ### **Full IUPAC Name** **(3R,4R,5R)-5-chloro-4-methylhexan-3-ol** --- ## **Summary Table** | Feature | Location | Name/Group | |------------------|----------|--------------| | Longest chain | 6C | hexane | | Alcohol group | C3 | -3-ol | | Chloro group | C5 | 5-chloro | | Methyl group | C4 | 4-methyl | | Stereochemistry | C3,C4,C5 | (3R,4R,5R) | --- ## **Why This Name is Correct** - All substituents are listed with correct locants. - Functional group (alcohol) takes priority in numbering. - Stereochemistry is specified for each chiral center. - The name follows IUPAC rules for substituents and functional groups. --- Let me know if you want to go through how to assign the **R/S** configuration!