IUPAC Name of C₄H₉Br | 1-bromobutane
What is the IUPAC name of C₄H₉Br?
The IUPAC name of C₄H₉Br is 1-bromobutane. It is a halide with a 4-carbon parent chain (butane) with a bromo at position 1 substituent.
| Formula | C₄H₉Br |
| IUPAC Name | 1-bromobutane |
| Compound Class | Halide |
| Parent Chain | butane (4 carbons) |
| Substituents | bromo at C1 |
| Difficulty | Intermediate |
Step 1: Identify the Parent Chain
The longest continuous carbon chain in C₄H₉Br contains 4 carbon atoms, giving the parent name butane. The parent chain is numbered to give the halogen substituent the lowest possible locant.
Step 2: Number and Name Substituents
Number the parent chain so that substituents receive the lowest possible locants. 1-bromobutane has one substituent:
- bromo at carbon 1
Step 3: Assemble the IUPAC Name
Combine the substituent locants and names (in alphabetical order) as prefixes to the parent chain name. If two or more identical substituents are present, use the multiplying prefixes di-, tri-, tetra-, etc. The complete IUPAC name is 1-bromobutane.
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