Surf these sites: BSIA -Breath Testing- -- BSIA bsia stable isotopes helicobacter pylori urea breathtest. C/D/N ISOTOPES -- Quite a large listing of deuterated compounds and Carbon-13 and Nitrogen-15 labelled compounds. In English or German or French. CHEMGAS ; STABLE ISOTOPES ; ISOTOPIC GASES -- Chemgas supplies high purity rare gases and isotopically enriched gases. Cambridge Isotope Laboratories -- Manufacturer of stable isotope labeled compounds and some fine deuterated solvents too. Cortec -- Supplier of stable isotopes (labeled compounds, gases, metals, deuterated solvents).The site says it has the world''s largest online database for stable isotopes. Custom Radiochemistry -- complete sysnthesis of custom radiochemicals. Isotec & Stable Isotopes -- Makes some of the most unique and novel labeled compounds Isotope Explorer - -- nuclear data a mouse-click away Isotope Production and Distribution -- - Catalog. Quite an extensive list. Martek Biosciences -- can supply isotopically enriched biochemicals Medical Isotopes, Inc. -- nearly a complete line of enriched biochemicals. Nice selection of fatty acids, enriched with C13. Radioisotopes in Medicine -- Stable and unstable isotopes are covered. Spectra Gases -- maker of rare, excimer laser, stable isotopic and environmental gases and gas mixtures Stable Isotope Lab Home -- The Stable Isotope Lab studies past and present climate change. Stable Isotope Laboratory -- Isotopes needed for Science and Industry. Stable Isotopes -- mainly for NMR use. U.S. DOE Isotope Programs -- The Department of Energy supplies isotopes for use in medicine, research and development, and industry. DOE is the only U.S. source of many important isotopes. Isotopes for research and development are made available at prices that support a reasonable return to the U.S. Government but do not discourage their use. international isotope society - index -- The IIS provides a forum for all chemists involved in radiochemical synthesis and analysis to obtain and share information outside of their immediate area of employment and expertise.
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