The following samples detail different aspects of using the PubChem PUG-REST Application Programming Interface (API).

• Part 1 - Basic syntax of PUG-REST request URL
• Part 2 - Accessing PubChem data using a chemical name
• Part 3 - Using a SMILES or InChI string as an input query

Extensive documentation about the API can be found here.

General information about the PubChem database can be found here.