Includes descriptive and numerical data on chemical, physical and biological properties of compounds; systematic and common names of compounds; literature references; structure diagrams and their associated connection tables. Contains all those compounds published in: Dictionary of organic compounds (200,000 records), Dictionary of natural products (120,000 records), Dictionary of inorganic and organometallic compounds (90,000 records), Dictionary of pharmacological agents (30,000 records), Dictionary of analytical reagents (14,000 records).

Provides wide coverage of data on properties of inorganic and organic compounds.

An authoritative and reliable source of information on chemicals, drugs and biologicals, the Merck Index* Online offers the same highly authoritative information as the print edition in a convenient and easily searchable full text database. It contains over 11,500 monographs – including historic records not available in the print edition. The Merck Index* Online will be updated regularly with accurate information curated by experts.

Pharmaceutical Substances is designed to be a complete reference guide to every pharmaceutical compound of significance. It provides a compendium of some 2,600 active pharmaceutical ingredients (API's) of interest to the chemical and pharmaceutical industries. Note: There is a known problem with the Structure Query. More info here.

Reaxys is a unique web-based chemistry database consisting of deeply excerpted compounds and related factual properties, reaction and synthesis information as well as bibliographic data, navigated and displayed via an actionable interface. Use it to access the combined wealth of trustworthy, experimental substance and reaction data and bibliographic data housed in the Beilstein, Gmelin and Patent Chemistry Databases.

Sax’s Dangerous Properties contains extensive data on approximately 28,000 substances, including 2,400 new entries. Each entry includes a DPIM code, hazard rating, entry name, CAS number, DOT number, molecular formula, molecular weight, line structural formula, description of material and physical properties, and synonyms. The book also contains Immediately Dangerous to Life or Health (IDLH) levels for approximately 1,000 chemicals. It also covers exposure-level classifications for a number of regulatory agencies, from OSHA to the U.S. Department of Transportation.

SpringerMaterials is the largest resource for properties, figures and graphs in materials science, with over 500,000 online documents covering 3,000 properties across 250,000 materials and chemical systems.

This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics.