The American Chemical Society is a congressionally chartered independent membership organization which represents professionals at all degree levels and in all fields of chemistry and sciences that involve chemistry.
This free database includes: Chemical Structures (2D structures & 3D models), Physical Properties (MP, BP, CAS RN, & more) and Hyperlinks (Links to other websites with information about your compound). You'll have to sign in to use it.
A professional association of chemists (Canadian Society for Chemistry), chemical engineers (Canadian Society for Chemical Engineering) and chemical technologists (Canadian Society for Chemical Technology).
A one-stop, self-serve portal where you can access library services and search the print collections and repositories of seven science-based departments and agencies from a single place. Wherever possible, departmental publications, reports, data sets and other content are freely available for anyone to access or download.