Can't find what you need on this site, these are excellent places to look. Plus A database of 350,000 chemical records, including over 85,000 with structures. Locator links allow immediate searching of other databases for information about a given chemical. The online counterpart to the printed edition of The Merck Index. You can search for data on specific compounds based on name, chemical formula, CAS registry number, molecular weight, chemical structure, or selected ion energetics and spectral properties.
Specialty chemicals are searchable by trade name, generic name, application area, and industry.
A searchable database of chemical manufacturers in Japan by product name, CAS No., and by product category. The number of products registered is abut 2000. Provides information on the hazardous effects of chemicals and processes encountered by workers in industry and laboratories. The database also covers microbiological and radiation hazards encountered in the workplace and information on health and safety issues in offices. Each record contains an informative abstract.