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fenamic acid

n. (context chemistry English) The parent structure for several nonsteroidal anti-inflammatory drugs, including mefenamic acid, tolfenamic acid, flufenamic acid, and meclofenamic acid.

Wikipedia
Fenamic acid

Fenamic acid is a molecule which, especially in its ester form, fenamate, serves as a parent structure for several non-steroidal anti-inflammatory drugs, including mefenamic acid, tolfenamic acid, flufenamic acid, and meclofenamic acid. These drugs are commonly referred to as "anthranilic acid derivatives" or "fenamates" because fenamic acid is a derivative of anthranilic acid.