cdk / Cdk
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The Chemistry Development Kit (CDK)
Copyright © 1997-2020 The CDK Development Team
License: LGPL v2, see LICENSE.txt
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Introduction
The CDK is an open-source Java library for cheminformatics and bioinformatics.
Key Features:
- Molecule and reaction valence bond representation.
- Read and write file formats: SMILES, SDF, InChI, Mol2, CML, and others.
- Efficient molecule processing algorithms: Ring Finding, Kekulisation, Aromaticity.
- Coordinate generation and rendering.
- Canonical identifiers for fast exact searching.
- Substructure and SMARTS pattern searching.
- ECFP, Daylight, MACCS, and other fingerprint methods for similarity searching.
- QSAR descriptor calculations
Install
The CDK is a class library intended to be used by other programs, it will not run as a stand-alone program.
The library is built with Apache Maven and currently requires Java 1.7 or later. From the root of the project run to build the JAR files for each module. The bundle/target/ directory contains the main JAR with all dependencies included:
$ mvn install
You can also download a pre-built library JAR from releases.
Include the main JAR on the Java classpath when compiling and running your code:
$ javac -cp cdk-2.3.jar MyClass.java
$ java -cp cdk-2.3.jar:. MyClass
If you are using Maven, you can use the uber cdk-bundle, note it is much more efficient to use include
the modules you need:
<dependency>
<artifactId>cdk-bundle</artifactId>
<groupId>org.openscience.cdk</groupId>
<version>2.3</version>
</dependency>
If you are a Python user, the Cinfony project provides access via Jython. Noel O'Boyle's Cinfony provides a wrapper around the CDK and over toolkits exposing core functionality as a consistent API.
Further details on building the project in integrated development environments (IDEs) are available on the wiki:
Getting Help
The Toolkit-Rosetta Wiki Page provides some examples for common tasks. If you need help using the CDK and have questions please use the user mailing list, [email protected] (you must subscribe here first to post).
Acknowledgments
The CDK developers use YourKit to profile and optimise code.
YourKit supports open source projects with its full-featured Java Profiler. YourKit, LLC is the creator of YourKit Java Profiler and YourKit .NET Profiler, innovative and intelligent tools for profiling Java and .NET applications.