science.chem.formula
Retrieve molecular formulas and weights for chemical compounds using names, CAS numbers, or SMILES identifiers. This tool provides essential chemical data for research and analysis.
Instructions
Get molecular formula and molecular weight for any compound by name, CAS number, or SMILES. Returns formula (e.g. "C9H8O4" for aspirin) and weight in daltons (e.g. 180.157). Accepts any chemical identifier format (NCI CACTUS)
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| identifier | Yes | Chemical identifier — compound name (e.g. "ibuprofen"), CAS number (e.g. "15687-27-1"), or SMILES string. Returns molecular formula and weight |