APIs - Develop - NCBI

PUG is a suite of APIs for the NCBI PubChem resource, and provides programmatic access to many PubChem functions including downloads of chemical and assay data, chemical structure searches and chemical standardization. PUG offers HTTP, REST and SOAP interfaces, and also integrates with the E-utilities to provide convenient access to other NCBI databases.

Sam Hart
Source: APIs - Develop - NCBI