MDL? ISIS/Draw is a chemically intelligent drawing package that enables you to draw chemical structures using the same intuitive signs and symbols used for paper sketches. You can insert your ISIS/Draw sketches into documents, Web pages, spreadsheets, and presentations. You can also use ISIS/Draw to create structures to register into 2D and 3D molecule, polymer, and reaction databases, and to create queries for searching these databases.
很有名的绘制化学结构式的免费软件，内建RASMOL插件，不须再下载RASMOL。界面与操作类似CHEM WIN，从其体积便知功能非常强大。 ISIS DRAW 2.5 HELP文件 3.3兆。ISIS DRAW 2汉化版，4.5M。
