Sulfameter a long-acting sulfonamide antibiotic used as a leprostatic agent and to treat urinary tract infections, which blocks the synthesis of dihydrofolic acid by inhibiting the enzyme dihydropteroate synthase as a competitive inhibitors of bacterial para-aminobenzoic acid.

Sulfisoxazole is an antagonist of endothelin receptor that can be used as a sulfonamide antibacterial agent.

Sulfamethazine is a sulfonamide antibacterial working by inhibiting bacterial synthesis of dihydrofolic acid through competing with PABA (para-aminobenzoic acid).

Sulfadimethoxine is a sulfonamide antibiotic used to treat many infections including treatment of respiratory, urinary tract, enteric, and soft tissue infections and most frequently used in veterinary medicine.

Sulfadoxine is a long-lasting sulfonamide that is usually used in combination with other drugs, for respiratory, urinary tract and malarial infections.

Sulfasalazine is a potent and specific NF-κB inhibitor and also inhibits system X_c and induces ferroptosis.

Sulfalene is a long-acting sulfonamide antibacterial used for the treatment of chronic bronchitis, urinary tract infections and malaria.

Phthalylsulfathiazole is a broad-spectrum sulfonamide antimicrobial agent.

Sulfamethazine sodium can inhibit the dihydrofolic acid synthetase and it is an antibiotic used to clinically treat bronchitis, prostatitis and urinary tract infections.

Sulfabenzamide is a widely used chemical intermediate with antibacterial activity.

Sulfathiazole is a short acting anti-infective agent which blocks the synthesis of dihydrofolic acid by inhibiting the enzyme dihydropteroate synthase, with toxicity.

Sulfadiazine is a synthetic pyrimidinyl short-acting sulfonamide antibiotic used to treat urinary tract infections, ear infections, meningitis, malaria, toxoplasmosis, and others.

Sulfaguanidine is a DHFR inhibitor showing antibacterial effects against Gram-negative and Gram-postitive bacteria.