Schema and Validation

Schema versions and validation

Starting from version 6.1, MRV files begin with a reference to the schema to which the file is conformed:

<?xml version="1.0" encoding="UTF-8"?>
<cml xmlns="" xmlns:xsi="" xsi:schemaLocation="" version="ChemAxon file format v6.1, generated by v6.1.0">

In previous versions, MRV format didn't have a reference to a schema:

<cml version="ChemAxon file format v6.0, generated by v6.0.0">



For these files, the recommended schema to use for validation is that of version 6.0.0.