New tools are introduced for complex drawing, so you are able to create more complex structures without continuously toggling between tools (e.g.: drawing tool, smart R-group tool, reaction tool). Marvin JS provides a great solution for drawing and modifying standard organic chemical and organometallic structures, reactions, electron transfer mechanisms, Markush-structures, and query molecules targeting different use cases. Marvin JS was created not only to meet requests of chemistry professionals, but to deliver solutions at the highest standard. 2D/3D clean, automap, stereo calculation). The Graphical User Interface and calculations are flexible: you can customize the application for your requirements, and extend its functionalities by installing the appropriate web services (e.g. It's seamlessly integrated into third-party web-based applications, and runs smoothly on all major browsers. Marvin JS provides quick and convenient ways to draw and modify standard and advanced chemical structures. Designing molecules on the web - fast, smart and intuitive