SMILES to IUPAC Name Converter Online Tool
Convert SMILES to IUPAC names for reports, assignments, naming checks, and chemical identifier workflows.
Tip: complex research codes such as calderasib or FMC-376 may resolve only if PubChem has a matching record.
File Format Explained
SMILES is a compact molecular line notation used for search, conversion, and cheminformatics workflows. It is optimized for machines rather than formal naming.
IUPAC names are systematic chemical names intended to describe compounds in formal language. They are useful in reports, assignments, publications, and naming checks.
One molecule may have multiple acceptable names or equivalent SMILES strings. Database-backed naming works best for recognized compounds with clear connectivity, charge, and stereochemistry.
How this SMILES to IUPAC converter works
The tool sends the SMILES string to PubChem's property lookup and displays the returned IUPAC name. You can also search PubChem first by compound name or CID, import the PubChem SMILES, and convert it automatically.
- Use SMILES for compact molecule identifiers.
- Use IUPAC names for formal reports, naming checks, and searchable chemical descriptions.
- If no result is found, verify stereochemistry, charges, salts, and unusual fragments in the SMILES input.
- For uncommon drug codes or research compounds, try both the code name and PubChem CID if available.