Freely Downloadable Databases 1 http://miro.ifsc.usp.br/pkdb/ Database for pharmacokinetic properties . 2 Chemsynthesis.com   This website contains substances with their synthesis references and physical properties such as melting point, boiling point and density. There are currently more than 40 000 compounds and more than 45 000 synthesis references in the database. 3 ChemIDPlus - the database of compounds and structures by US National Library of Medicine (requires loading of JAVA Runtime Environment) 4 DrugBank 5 Drugs.com 6 RxList - the Internet Drug Index 7 QueryChem 8 ChemDB 9 ChemDB/ChemicalSearch: Find Chemicals by Various Search Criteria 10 Development of QSAR models using C-QSAR program: a regression program that has dual databases of over 21,000 QSAR models 11 ADME Databases 12 The Carcinogenic Potency Database (CPDB) 13 The US Environmental Protection Agency Toxicity Datasets 14 ZINC - a free database of commercially-available compounds for virtual screening 15 PubChem - NIH's database on biological activities of small molecules 16 NCI's CACTUS databases 17 IUPAC's International Chemical Identifier (InChITM) 18 Bioinformatics and Drug Design (BIDD) Group Databases Get related paper 19 LOGKOW - a databank of evaluated octanol-water partition coefficients (Log P) 20 ChemMine - ChemMine is a compound mining database that facilitates drug and agrochemical discovery and chemical genomics screens. The associated publication is available in Plant Physiol: 138, 573-577 21 Super Drug database - 2396 compounds with 108198 conformers 22 Chemistry, Structures & 3D Molecules@3Dchem.com 23 Database of Approved Animal Drug Products of the FDA Center for Veterinary Medicine 24 Drugs, Supplements, and Herbal Information a joint service of the US National Library of Medicine (NLM) and National Institutes of Health (NIH) 25 WHO's Anatomical Therapeutic Chemical (ATC) and Defined Daily Dose (DDD) Index 2007 a service of the WHO Collaborating Centre for Drug Statistics Methodology Note: Please click on the "ATC 2007 Index" link in menu bar on left side to access the free service. 26 Drug Interactions - cytochrome p450 system 27 MEDPHYT® - a database for plants of medicinal interest 28 R&D Chemicals - Online Chemicals Database 29 NIH-NCRR's Pharmabase - a database of cellular physiology & pharmacology 30 Human Tumor Cell Line Screen - NIH-NCI's Developmental Therapeutics Program (DTP) database of compounds that have been screened for ability to inhibit the growth of human tumor cell lines. 31 PubDock - Docking PubChem For Discovery 32 Pub3D - 3D Structures database 33 ChemBioGrid - databases - supported by the Indiana University - that store and search 2D chemical structure information 34 ChemExper - catalogue of chemicals 35 ECOTOX Database 36 Technology for Growth - Useful resource for technological support, news and database on environment related QSAR 37 ChemXSeer - Searches papers, formulae, tables, Gaussian calculations, CHARMM calculations and CHEMDATA. Note: Most of these search engines are in alpha versions. User discretion is advised. 38 CCMSI - free databases made available by the Computational Center for Molecular Structure and Interactions (CCMSI) - a research centre funded by the National Science Foundation (CREST program) based in Jackson, MS, USA.