ChemByDesign

SciFinder是美国化学学会（ACS）旗下的化学文摘服务社CAS（Chemical Abstract Service）所出版的化学资料电子数据库。

Reaxys is a unique web-based chemistry database consisting of deeply excerpted compounds and related factual properties, reaction and synthesis information as well as bibliographic data, navigated and displayed via an actionable interface.

Chemistry journals, books, and references published by the American Chemical Society

英国皇家化学学会（Royal Society of Chemistry，简称RSC）是国际主要的化学专业学会之一

摩贝化学品-化工词典MOLBASE是一个免费化合物数据库，已收录了4000多万条化合物数据

Chemical Science Journals, Books and Databases

Search and explore chemical information in the world's largest free chemistry database

化学物质索引数据库 （Chemical Index Database）