The Chemistry Development Kit (CDK) is a scientific, LGPL-ed library for bio- and cheminformatics and computational chemistry written in Java.

The main home page of the CDK is now at:


  • Read and write chemical data formats
  • Render chemical structures
  • Algorithms for chemical graph theory
  • QSAR descriptors
  • Parts optimized with the YourKit Java Profiler (

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Additional Project Details



Intended Audience

Science/Research, Education, Developers

User Interface

X Window System (X11), Win32 (MS Windows), Web-based

Programming Language