Ketcher is an open-source web-based chemical structure editor incorporating high performance, good portability, light weight, and ability to easily integrate into a custom web-application. Ketcher is designed for chemists, laboratory scientists and technicians who draw structures and reactions.

• ⚡️ Fast 2D structure representation that satisfies common chemical drawing standards
• 💠 3D structure visualization
• 📝 Template library (including custom and user's templates)
• 🔩 Add atom and bond basic properties and query features, add aliases and Generic groups
• 🌀 Stereochemistry support during editing, loading, and saving chemical structures
• ➿ Storing history of actions, with the ability to rollback to previous state
• 💾 Ability to load and save structures and reactions in MDL Molfile or RXN file format, InChI String, ChemAxon Extended SMILES, ChemAxon Extended CML file formats
• 🔬 Zoom in/out, hotkeys, cut/copy/paste
• 🔮 OCR - ability to recognize structures at pictures (image files) and reproduce them
• 📋 Copy and paste between different chemical editors
• 🛠️ Settings support (Rendering, Displaying, Debugging)
• 📷 Use of SVG to achieve best quality in-browser chemical structure rendering

• Atom Tool, Bond Tool, and Template Tool to draw and edit structures
• Aromatize/De-aromatize Tool
• Calculate CIP Descriptors Tool
• Structure Check Tool
• MW and Structure Parameters Calculate Tool
• Select, modify, and erase connected and unconnected atoms and bonds using Selection Tool, or using Shift key
• Advanced Structure Clean up Tool (+ stereochemistry checking and structure layout)
• Simple Structure Clean up Tool (checks bonds length, angles and spatial arrangement of atoms)
• Easy to use R-Group and S-Group tools (Generic, Multiple group, SRU polymer, peratom, Data S-Group)
• Reaction Tool (reaction generating, manual and automatic atom-to-atom mapping)
• Flip/Rotate Tool

At this moment Ketcher can be embedded into your application in two ways:

• as a react component library
• as ready-to-run application (to find desired version please look at Assets block of releases). The application can be injected as IFrame or a separate page.

Look at the following link for details.

You can find the instruction for service installation here.

Project	Status	Description
ketcher-core		Core functionality: domain, shared services, functions and interface declarations
ketcher-standalone		Contains only the functionality necessary to start Ketcher in standalone mode
ketcher-react		Package contains only the functionality necessary to define components.

Ketcher uses Miew-React for viewing and editing data in 3D.

You can find the latest version of Miew-React here. The last checked version - 1.0.0.

See Contributing Guide.

Apache 2.0

Please read LICENSE and NOTICE for details.

Copyright (c) 2021 EPAM Systems, Inc.