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ChemSpider is a free chemical structure database providing fast access to over 26 million structures, properties and associated information.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

Antibodies and other tools for protein extraction, purification, modification and detection. Pierce Protein Research Products from Thermo Fisher Scientific.

CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

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Vertellus Specialties Inc. is a Leading global supplier of specialty chemicals and technology for: agriculture, nutrition, plastics, polymers, personal care, coatings, inks, imaging, pharmaceutical, medical, industrial specialties, sealants, adhesiv...

NIST site provides chemical and physical property data on over 40,000 compounds.

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...