PubChem
https://pubchem.ncbi.nlm.nih.govSearch and explore chemical information in the world's largest free chemistry database. Search chemicals by name, molecular formula, structure, and other identifiers. Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more.
Chemical database - Wikipedia
https://en.wikipedia.org/wiki/Chemical_databaseBioactivity databases correlate structures or other chemical information to bioactivity results taken from bioassays in literature, patents, and screening programs. Chemical structures are traditionally represented using lines indicating chemical bonds between atoms and drawn on paper (2D structural formulae). While these are ideal visual representations for the chemist, they are unsuitable for computational use and especially for search and storage. …
Chemical Data
https://www.chemicaldata.comChemical Data provides ongoing market research and analysis for the U.S. plastics, petrochemical and petroleum industries. Our services include two monthly multi-client studies that include prices and market analysis from crude oil and natural gas to plastics. We also provide other services including custom single-client studies.
NIST Chemistry WebBook
https://webbook.nist.gov/chemistryOrganometallic Thermochemical data compiled by José A. Martinho Simões Heat of Sublimation data compiled by James S. Chickos Heat of Fusion data compiled by James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri – St. Louis Boiling Point data