Chemical Markup Language

Chemical information is traditionally stored in many different file types which inhibit reuse of the documents. CML uses XML's portability to help CML developers and chemists design interoperable documents. There are a number of tools that can generate, process and view CML documents. Publishers can distribute chemistry within XML documents by using CML, e.g. in RSS documents.

CML is capable of supporting a wide range of chemical concepts including:

• molecules
• reactions
• spectra and analytical data
• computational chemistry
• chemical crystallography and materials

Details of CML and points currently under discussion are now posted on the CML Blog.

Versioning

Versions of the schema are available at SourceForge. As of April 2012, the latest frozen schema is CML v2.4. Some constructs in CML v1 are now deprecated.