By Dr. Stephen R. Heller, George W. A. Milne (auth.)
This handbook is intended to be one of many first steps within the renaissance of the Beilstein instruction manual of natural Chemistry and its computer-readable opposite numbers, the Beilstein Databases of real and structural info. the big paintings of the workers of the Beilstein Institute has produced, for over a hundred years, a really invaluable and designated medical source. we're happy that allows you to be excited about making this huge quantity of evaluated medical facts extra available to the global chemical neighborhood. we wish to thank the various employees contributors of the Beilstein Institute for his or her assist in offering us with the required info, proof, and corrections to this guide. particularly we want to thank Clemens Jochum, Reiner Luckenbach, Sandy Lawson, Laszlo Domokos, Martin Hicks, Steve Welford, and particularly Christiane Schaum and Gabriele IIchmann of the Beilstein Institute. we're additionally indebted to many lecturers of natural chemistry and associates within the box of desktops and chemical details, together with Fausto Ramirez, Ed Kosower, Chuck Hammer, Richard Feldmann, and Chezi Wolman.
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Extra info for Online Searching on DIALOG® : Beilstein Reference Manual
Chemical Names in the Reactions Data The reactions undergone by the title compound are carried in the reactions data. Both reaction partners and reagents are carried (the distinction between these is discussed in section 3B1 A) and can be searched for by name, as can the reaction products. g. diazotization, ozonolysis) is also searchable. Searching in the reactions data is described in detail in section 3B6E. 3B4. Searching for Title Compounds Every record in the Beilstein Database is concerned with a single specific compound, which is called the title compound.
Number of Components The Beilstein Database contains a number of references to salts and addition compounds. The number of species involved in such molecules is denoted by NC-a numeric searchable field. In the first release of the database, the value of NC is set to 1 for all entries. Thus a search for NC = 1 retrieves the whole file, while a search for NC = 2 results in zero hits.
S 140<=mp<=150 [or s mp=140:150j will find any compound whose melting point has been reported to lie between 140 and 150°C (exclusive). The statement ? s 140