Free interactive chemistry · SIM-ORG-003

IUPAC name builder

Name alkanes by the IUPAC rules: find the longest chain, number it, name the branches.

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How to use this simulation

Choose “Name it”.
Look at the structure: blue is the parent chain, orange are substituents.
Pick the correct name from the choices.
Press “Next alkane” for another.

What to notice

Number from the end nearer the first branch (lowest locants).
List substituents alphabetically; use di-, tri- for repeats.

Try this

Get five names right in a row.

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