EC EC Number

1.1.1.27 in ec

2.7.1.37 in ec

The EC field lists the unique Enzyme Commission (EC) Number for each enzyme cited in the original document. All EC Numbers are assigned by the International Union of Pure and Applied Chemistry (IUPAC) and International Union of Biochemistry and Molecular Biology (IUBMB). The corresponding textual name for each enzyme is listed in the Enzyme Names (EN) field.

Browsing EC Numbers

As an alternative to searching with the field label, you can browse EC Numbers and search for them directly from the EC Number Field-Specific Index. This field-specific index contains only EC Numbers available in the database. Results of a search in this index display in the EC field.

Searching for EC and CAS Numbers Simultaneously

You can search for the numeric identification for enzymes and chemical substances simultaneously using a special pseudo field. The CAS Registry Number or EC Number (RN) field enables you to search in the EC and CAS Registry Numbers (CAS) fields simultaneously. Search results display in the respective fields.