Chemistry and Biochemistry

More than 200,000 Inorganic crystal structures.

Contains thermochemical data, IR spectra, mass spectra and more - for thousands of compounds.

Log in; select "Searching for Substances". Many search options - CAS # ; name ; molecular formula

Essential engineering database - abstracts from thousands of journal articles and conference proceedings. For many years, known as Engineering Index.

Also includes abstracts from thousands of journal articles and conference proceedings in engineering - and, physics. Focus for many years was on computer-related content. [note: same search platform as Compendex]

Also covers thousands of journal articles. Previously, it specialized as a print source for "citation indexes", published by ISI.

One-stop shop for all things related to writing - poster presentations; data sharing ; word usage ; ways scientists communicate, etc.

Open access chapter.

Provides a persistent digital identifier (an ORCID iD) that you own and control, and that distinguishes you from every other researcher. Free.