Is sulfonamide acidic or basic?
The computed pKa values varied between 5.9 and 12.6 and correlate well with the available experimental pKa’s found in the literature. Cancerostatic aromatic sulfonamides 16-19 are generally weak acids with the acidity comparable or slightly lower than the lead sulfanilamide.
What is Sulfamerazine used for?
Sulfamerazine is an antibacterial agent used in the treatment of various bacterial infections, such as bronchitis, prostatitis, and urinary tract infections. A sulfanilamide that is used as an antibacterial agent.
Is sulfanilamide an acid?
Sulfanilamide is an organic sulfur compound structurally similar to p-aminobenzoic acid (PABA) with antibacterial property. Sulfanilamide competes with PABA for the bacterial enzyme dihydropteroate synthase, thereby preventing the incorporation of PABA into dihydrofolic acid, the immediate precursor of folic acid.
What is the nature of sulfonamide?
In chemistry, the sulfonamide functional group (also spelled sulphonamide) is -S(=O)2-NH2, a sulfonyl group connected to an amine group. Relatively speaking this group is unreactive. The amine center is no longer basic. The S-N bond is cleaved only with difficulty.
Are sulfonamides gram-positive or negative?
6.7. Sulfonamides are synthetic antibacterial compounds and are generally wide-spectrum drugs active against a range of bacterial species, both Gram-positive and Gram-negative.
Can humans take sulfamethazine?
Sulfamethazine is a sulfonamide used to treat a variety of bacterial diseases in humans and other species. It has been used since the late 1950s to treat respiratory disease and promote growth in food-producing animals (cattle, sheep, pigs and poultry).
Can dogs take sulfamethazine?
Treatment. Sulfadimethoxine is the only drug that has been approved for the treatment of coccidiosis in dogs and cats, but because sulfonamides are coccidiostatic, a low level of persistent infection is possible after treatment.
What is sulfonamide in chemistry?
sulfonamide, also spelled Sulphonamide, any member of a class of chemical compounds, the amides of sulfonic acids. The class includes several groups of drugs used in the treatment of bacterial infections, diabetes mellitus, edema, hypertension, and gout.
What is the pKa of NH3?
38
The pKa of ammonia itself is 38, which measures the equilibrium constant for dissociation of NH3 to give its conjugate base, NH2(-) and H+. That means that 38 is the pKaH of the amide ion NH2(–), which you may have encountered before as the strong base (NaNH2) used to deprotonate terminal alkynes (pKa =25).
Is sulfonamide an acid?
Are sulfonamides hydrophilic?
Sulfonamides are hydrophobic compounds so it is best to apply a stationary phase which will interact with the hydrophobicity property of a compound.
Is sulfonamide bactericidal or bacteriostatic?
Sulfonamides are synthetic, broad-spectrum bacteriostatic antibiotics. They were the first effective systemic antimicrobial agents. Their mode of action is based on the inhibition of DNA synthesis. Due to their toxicity and high adquired resistance their use is currently very low.
Are sulfonamides broad or narrow spectrum?
Sulfonamides are synthetic, broad-spectrum bacteriostatic antibiotics. Because of associated toxicity and high rates of resistance, their use is now very limited.
Is ciprofloxacin a sulfonamide?
Cipro and Bactrim are both antibiotic drugs, but they belong to different drug classes. Cipro is a fluoroquinolone antibiotic. Bactrim is a sulfonamide antibiotic. Bactrim contains two drugs in one pill, trimethoprim and sulfamethoxazole.
Is cotrimoxazole bacteriostatic or bactericidal?
Cotrimoxazole (Sulfamethoxazole-Trimethoprim, SXT), is an inhibitor of folinic acid synthesis and has bacteriostatic activity against susceptible bacteria.
What class of drug is sulfamethazine?
Sulfamethazine is a sulfonamide drug that inhibits bacterial synthesis of dihydrofolic acid by competing with para-aminobenzoic acid (PABA) for binding to dihydropteroate synthetase (dihydrofolate synthetase).