Illustrated Glossary of Organic Chemistry

Sulfa drug: A drug containing the general aromatic sulfonamide molecular structure shown below. Many sulfa drugs are antibiotics which inhibit folic acid biosynthesis.

General sulfa drug molecular structure. R is usually an aromatic heterocycle. X = H or Na.

Example Sulfa Drugs

Sulfadiazine		Sulfamethazine		Sulfamethoxazole