Identifier Cleaner

Convert between SMILES, InChI, InChIKey, and compound names. Supports PubChem name resolution as a fallback when the input is a common drug name.

Example: aspirin → CC(=O)Oc1ccccc1C(=O)O

Free Research Context Use this tool freely, then open the research home or demo workspace when you want project context.

Research home Demo workspace

Canonical SMILES O=[N+]([O-])c1cc(Cl)c(O)c2ncccc12

InChI InChI=1S/C9H5ClN2O3/c10-6-4-7(12(14)15)5-2-1-3-11-8(5)9(6)13/h1-4,13H

InChIKey VNHOFPGOOLRCLG-UHFFFAOYSA-N

Molecular Weight

224.6