- 元素周期表中的分析化学(痕量分析)
Analytical Periodic Table is provided by Inorganic Ventures / IV Labs.
http://www.ivstandards.com/ 5000
- 大宗化学品在美国排放情况排名
Scorecard provides detailed information on more than 6,900 chemicals, including all the chemicals used in large amounts in the United States and all the chemicals regulated under major environmental laws.
http://www.scorecard.org/ 5000
- 《有机合成手册》
Organic Syntheses presents to the organic chemistry community detailed experimental methods in a standard format for the synthesis of organic compounds. In some 77 annual volumes and 9 collective volumes published by John Wiley & Sons,
http://www.orgsyn.org/ 5000
- 《科学此刻》
《科学此刻》(Science Now) -- 每个美国的工作日，《科学》杂志的新闻组都会为网上用户提供几篇3、4段长的有关科研或科学政策的最新消息。这些消息短小精炼，使读者花不多的时间就能及时了解世界各地各科研领域的最新进展。
http://sciencenow.sciencemag.org/ 5000
- CAS化学反应数据库(含营养保健品文献库)
CASREACT - answers your organic chemical reaction questions
http://www.cas.org 5000
- 化学工程师资源
It's a recognized site with an active message board for chemical engineers.
http://www.cheresources.com 5000
- 化学工业资源搜索引擎
ChemIndustry.com is the leading comprehensive category search engine for chemical and allied industry professionals. ChemIndustry.com provides chemical and allied industry professionals an efficient tool for locating the information, products and services they need via the World Wide Web. We serve p
http://www.chemindustry.com/ 5000
- 化学数据库
The subject matter falls into two main categories. Most of the databases are focused on synthetic organic chemistry, and are used by chemists involved in drug discovery work.
http://www.accelrys.com 5000
- 科技日报
科技日报
http://www.stdaily.com/ 5000
- 生物通
主要栏目：1. 新闻中心;2. 科研社区;3. 生物通商城;4. 人才市场;5. 技术与投资。
http://www.ebiotrade.com/ 5000
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