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7.3: Normal Modes in Polyatomic Molecules - Chemistry LibreTexts An explanation of vibrational normal modes in polyatomic molecules, with examples such as H₂O and benzene. Part of the Physical and Theoretical Chemistry library.	Beilstein-Institut The Beilstein-Institut is an independent non-profit foundation dedicated to the advancement of chemical sciences and related fields.
CACTVS - Chemical Structure Processing The CACTVS toolkit for chemists is a versatile chemo-informatics platform. It is developed and maintained by Xemistry.	Carbon-13 Chemical shifts @ Wisconsin-Madison US
CAS A division of the American Chemical Society specializing in scientific information solutions, including the former Chemical Abstracts service.
CAS - A division of the American Chemical Society CAS specializes in scientific information solutions, creating the world"s largest collections of che.
CCOHS Health and Safety Resources Provides a wide range of credible and practical health and safety resources, tools, and information from the Canadian Centre for Occupational Health and Safety.
Chemical Economics Handbook (CEH) The world"s leading source of chemical market analysis and forecasting, now offered by S&P Global Commodity Insights.
Chemical Process Economics Program (PEP) by S&P Global Provides in-depth, independent, and up-to-date techno-economic assessments of chemical processes from S&P Global Commodity Insights.
Chemical Process Economics Program (PEP) by S&P Global Provides in-depth, independent, and up-to-date techno-economic assessments of chemical processes from S&P Global Commodity Insights.	ChemIDplus - National Library of Medicine A dictionary of over 400,000 chemicals, with structures, names, and links to NLM databases. A key resource for former TOXNET users.
CODATA Internationally recommended values of the Fundamental Physical Constants @ NIST US	Colour Index @ Society of Dyers and Colourists UK
CRC Press, Inc. Includes a CRC Master Catalog	Crystallography Open Database (COD) An open-access collection of crystal structures of organic, inorganic, metal-organic compounds and minerals, including powder patterns.
Data base of aqueous solubility for organic non-electrolytes An aqueous solubility data base for organic non-electrolytes is being compiled from scientific articles. These articles are objectively evaluated. The data are entered and checked both electronically and manually for missing information and errors.	Database of Zeolite Structures Maintained by the Structure Commission of the International Zeolite Association (IZA-SC), providing structural information on zeolite materials.
Databases: Patent, Bibliographic, and AIDS @ US Patent Office US	DAYLIGHT Chemical Information Systems, Inc. A collection of software tools for construction and enhancement of chemical information systems. Have databases ready to go.
Dielectric Constants Guide @ ASI Instruments US	Directory of Chemical Producers (DCP) A comprehensive database of chemical producers and manufacturing plant locations, now part of S&P Global Commodity Insights.
ElectroChemical DataBase: Gibbs Energies of Transfer @ EPFL/UNIL CH	Elsevier Reaxys Reaxys is the modern successor to tools like CrossFire for accessing the Beilstein database, providing extensive chemical reaction and substance data.
Elsevier Reaxys Reaxys is the modern chemical database and synthesis planning tool that replaced older systems like CrossFire for accessing Beilstein data.	Elsevier Reaxys Reaxys retrieves chemical literature, compound properties and reaction data. It has subsumed the data from the Beilstein and Gmelin databases.
EPA CompTox Chemicals Dashboard The definitive, modern successor to the DSSTox program. Provides public access to data on chemistry, toxicity, and exposure for thousands of chemicals.	EPA Toxics Release Inventory (TRI) Program Tracks the management of certain toxic chemicals that may pose a threat to human health and the environment. U.S. facilities report annually on their releases.
EPI Suite™ - Estimation Program Interface A screening-level tool from the EPA that estimates chemical physical/chemical properties, environmental fate, and ecotoxicity. Includes PHYSPROP.	EPI Suite™ Estimation Program Interface A Windows-based suite of physical/chemical property and environmental fate estimation models developed by the U.S. Environmental Protection Agency (EPA).
Espacenet - Patent search Free access to over 140 million patent documents from around the world, provided by the European Patent Office.	Fundamental Physical Constants The official source for the values of the fundamental physical constants from the National Institute of Standards and Technology (NIST).
General Chemistry Online! A virtual textbook for General Chemistry. Tutorials, guides, and resources for students created by Dr. Fred Senese at Frostburg State University.	GlyTouCan - International Glycan Structure Repository The international glycan structure repository. A public database for carbohydrate structures, serving as a successor to CarbBank.
Ingenta Ingenta	Ionic Liquids Database @ IUPAC / QUB UK
JAICI - Japan Association for International Chemical Information The Japan Association for International Chemical Information (JAICI) is the official partner and distributor for CAS products and services in Japan.	KEGG LIGAND Database Composite database of chemical substances and reactions relevant to life, including compounds, glycans, reactions, and enzymes, part of the KEGG project.
Lipid Library Lipid Library	LiqCryst - Liquid Crystalline Compounds Database Part of SpringerMaterials, LiqCryst is a comprehensive database containing information on liquid cry
MDL Information Systems, Inc. A supplier of chemical information management software, chemical databases, and related services.	NDB Nucleic Acid Database NDB Nucleic Acid Database
NIST Chemistry WebBook NIST Chemistry WebBook	NIST Chemistry WebBook Provides chemical and physical property data for over 40,000 compounds, compiled and distributed by the National Institute of Standards and Technology (NIST).
NIST CODATA Fundamental Physical Constants The internationally recommended values of the fundamental physical constants, provided by the National Institute of Standards and Technology (NIST).	NIST Data Gateway Provides easy access to NIST scientific and technical data, including standard reference data, databases, and software.
OfficeMSDS OfficeMSDS	Pesticide Properties Database (PPDB) A comprehensive relational database of pesticide chemical and physical properties, as well as ecotoxicology and human health data.
Physicochemical Property & ADME-Tox Prediction Software | ACD/Percepta Predict key physicochemical properties such as pKa, logP, logD, aqueous solubility, and other ADME and toxicity endpoints from a chemical structure.	PubChem The world"s largest collection of freely accessible chemical information. A public repository for information on chemical substances and their biological activities.
RSC Publishing The publications portal of the Royal Society of Chemistry, providing access to journals, books, and databases covering the chemical sciences.	S&P Global Commodity Insights - Chemicals Provides pricing, data, and analysis for the global chemical markets, a modern equivalent to specialized industry newsletters.
Science of Synthesis From publisher Thieme Chemistry, Science of Synthesis is the modern evolution of the Houben-Weyl met	Solubility Database @ NIST US
Specialty Chemicals by S&P Global Market analysis, data, and consulting for the specialty chemical sector from S&P Global Commodity Insights.	Spectral Database for Organic Compounds (SDBS) An integrated spectral database system for organic compounds, which includes 6 different types of spectra under a directory of the compounds.
Spectroscopy Software and Spectral Libraries Thermo Fisher Scientific provides comprehensive software and spectral libraries for FTIR, Raman, and NIR analysis, the modern equivalent of FTIRsearch.com.	SRI International - A global leader in R&D with deep roots in Silicon Valley. For almost 80 years, we have collaborated across disciplines to develop groundbreaking products and technologies and bring innovations and ideas to the marketplace.
Standard Atomic Weights Recommended by IUPAC @ National Research Council CA	Stanford Environmental Health & Safety (EH&S) - Chemical Safety Provides guidance, resources, and programs for the safe use, storage, and disposal of chemicals at Stanford University.
STN International The premier single source for the world"s disclosed scientific and technical research. Operated jointly by CAS and FIZ Karlsruhe worldwide.	STN International @ FIZ Karlsruhe DE
STN IP Protection Suite An integrated suite of STN products that empowers searchers at all levels of expertise. Provided by CAS, a division of the American Chemical Society.	Symmetry@Otterbein An organized collection of information on the symmetry of molecules, including point group informati
The Cambridge Crystallographic Data Centre (CCDC) Responsible for the production and maintenance of the Cambridge Structural Database (CSD), a repository for small-molecule organic and metal-organic crystal structures.	The Cambridge Crystallographic Data Centre (CCDC) The CCDC is dedicated to the advancement of chemistry and crystallography for the public benefit through structural chemistry data, software, and knowledge.
ThermoDex @ U. Texas US	TSCA Chemical Substance Inventory The official source for the Toxic Substances Control Act (TSCA) Chemical Substance Inventory provided by the U.S. Environmental Protection Agency (EPA).
UC Berkeley College of Chemistry The official website for the College of Chemistry at the University of California, Berkeley, a world-renowned leader in chemistry and chemical engineering.	UC Davis Library - Chemistry Databases A curated list of databases and research guides for chemistry provided by the UC Davis University Library.
University of Hamburg - Liquid Crystal Group The research group of Prof. Dr. Vill is working on organic materials as well as scientific information systems. Prof. Vill is also head of the IT-Service of the department (Fachbereich) of Chemistry.	Web of Science - Clarivate The world’s most trusted publisher-independent global citation database. Formerly known as Web of Science.
Web of Science Master Journal List Search, browse, and explore journals indexed in the Web of Science. Find the right journal for your	Wiley KnowItAll Software Integrated software and database solution for spectral and chemical data management, analysis, and searching. Includes former InfoChem data assets.
Wiley Science Solutions Provides spectral and chemical data, software, and online libraries to support research and development in various scientific fields.	World Analysis—Petrochemicals | S&P Global Commodity Insights Provides a comprehensive look at the global petrochemicals market, covering supply, demand, trade and pricing for over 40 petrochemicals.