http://www.organicworldwide.net/
[url=http://www.organicworldwide.net/]http://www.organicworldwide.net/[/url]介绍：免费的哟，Although a wealth of information is available on the internet, typically it is presented in an unorganized manner which overshadows its usefulness. Traditional search engines do not adequately address the problem as they provide an overload of general information but no specific answer set. Most of researchers?time is inefficiently used in sieving through unrelated/irrelevant information from the engine? output. Consequently, the time constraints often compete the utility of internet searches.A better approach is consulting chemistry resource guides but few of them are designed for a specific audience and often an updating/maintenance problem is observed (due to volunteer work). Commercial sites address the latter problem but are characterized by a limited access (registration or fee), limited coverage (only sponsor items) and extensive banner advertisement.In this context, Organic Chemistry Resources Worldwide, a web site designed for the specific needs of organic chemists, was created (February, 1996). Its mission consist in collecting and independently annotating all useful organic chemistry sites and to present them in an intuitive way. Furthermore, this low-graphics, quick-loading guide has no access restriction as it available for a worldwide audience and no registration or user fee are required.
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