Category:Multiple chemicals in Infobox drug

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This category lists articles that have a second identifier in {{Infobox drug}}, introducing a second chemical substance. For example, |CAS_number2= may be used.

The chemicals can be specified (clarified) by adding an index prefix |index_label=, |index2_label=. See also Infobox drug documentation.

This category is populated by {{Infobox drug}}