Determine the IUPAC Name
Practice your organic chemistry nomenclature skills. Filter by functional groups to do specific practice. Increase molecular weight for harder molecules. R, S, E, or Z configurations aren't included in these particular problems.
What is the IUPAC name?
Common Questions
What is IUPAC nomenclature?
IUPAC nomenclature is the systematic method for naming organic compounds established by the International Union of Pure and Applied Chemistry. It uses a root name based on the longest carbon chain, prefixes for substituents, and suffixes for functional groups.
How do you find the parent chain?
The parent chain is the longest continuous carbon chain that contains the highest-priority functional group. If two chains have equal length, choose the one with more substituents.
How do you name substituents on the parent chain?
Substituents are named as prefixes with their position numbers. Alkyl groups are named by replacing -ane with -yl (methyl, ethyl, propyl). Multiple identical substituents get di-, tri-, tetra- prefixes. List substituents alphabetically, ignoring multiplying prefixes.
What are common IUPAC suffixes for functional groups?
Common suffixes include: -ol (alcohol), -al (aldehyde), -one (ketone), -oic acid (carboxylic acid), -amine (amine), -ene (alkene), -yne (alkyne). The suffix determines the compound class.