Sulfonamides and Derivatives

<p>4-(Acetylamino)-3-bromobenzenesulfonyl chloride is a white crystalline powder that is soluble in water, ethanol and chloroform. It has an analytical standard purity of 99% or greater. This compound can be used for research and development purposes as well as for the synthesis of pharmaceuticals. The impurity profile of 4-(acetylamino)-3-bromobenzenesulfonyl chloride includes 3-acetylbenzenesulfonic acid, sodium acetate, ammonium chloride, sodium sulfite, potassium bromide, potassium iodide, potassium carbonate, and potassium citrate.</p>

<p>Hydrocortisone EP Impurity H is an analytical standard that is used as an impurity in the production of hydrocortisone. It has been shown to have a purity level of 99.5% and can be used as a reference standard for HPLC analysis. Hydrocortisone EP Impurity H can also be used as a reference standard for drug product development, API impurities, and drug metabolite identification.</p>

<p>Aceclofenac is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits the production of prostaglandins, which are produced by inflammatory cells in response to tissue injury. It is used to treat pain and inflammation. Aceclofenac is absorbed quickly from the gastrointestinal tract and has a high bioavailability. The maximum plasma concentration is reached within 1 hour after oral administration. Aceclofenac has a short half-life of about 2 hours. This drug binds to fatty acids and hepatoprotective substances, such as polymers, pyruvic transaminase, acetate extract, and humans. It also inhibits the transcription of cyclooxygenase-2 (COX-2), which produces prostaglandins that are involved in various aspects of inflammation.</p>

<p>2-Hydroxy-5-[2-[4-(2-imino-1(2H)-pyridinyl)phenyl]diazenyl]-benzoic acid (DPC) is a drug product that is used in pharmaceutical research and development. It is an impurity standard for HPLC analysis. DPC has been shown to be a metabolite of the drug product 2,6-dimethoxy-N-(3-methylphenyl)pyrimidine-4,6-diamine (DMX), which is used in the treatment of cancer. Impurities standards are important for ensuring the quality of drugs and ensuring that they are safe for human use. This product can also be synthesized from commercially available amino acids.</p>

<p>3,4-Dihydro-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylic acid ethyl ester 1,1-dioxide is a synthetic sulfoxide that is used as an antiinflammatory drug. It is a stable compound that can be used in the production of dimethyl sulfoxide and piroxicam. The purity of this compound is greater than 99.5%.</p>

<p>Aceclofenac ethyl ester is a prodrug of diclofenac. It is a non-steroidal anti-inflammatory drug that alleviates the symptoms of pain, stiffness, and swelling. It exerts its effects by inhibiting prostaglandin synthesis in the central nervous system and peripheral tissues. Aceclofenac ethyl ester has minimal systemic absorption when administered orally, which reduces the risk of side effects such as stomach upset and kidney damage. The pharmacopoeia provides an efficient method for preparing this compound by reacting diclofenac with magnesium stearate in a solvent containing an organic amine or alcohol at temperatures below 50°C (122°F). Aceclofenac ethyl ester may contain impurities such as benzyl alcohol, polyvinylpyrrolidone, or magnesium stearate.</p>

<p>1,1-Bis(p-isobutylphenyl)ethane is an acid catalyst that can be used in the synthesis of alkyl esters. It is unreactive at high temperatures and can be reused many times. 1,1-Bis(p-isobutylphenyl)ethane is also a component of catalytic carbonylation reactions. It reacts with acetaldehyde to form a metal carbonyl complex, which then reacts with a carbon monoxide molecule to form an ester. Carbonylation reactions are often used to synthesize organic compounds from alkyl halides or alcohols. Carbonylation reactions are catalyzed by metal carbonyls, such as palladium and nickel complexes.</p>

<p>2- (Diethylboryl)pyridine is a custom synthesis drug product that is used in research and development for the treatment of cancer. 2- (Diethylboryl)pyridine has been shown to be active against various types of cancer cells, including leukemia, breast, prostate, ovarian, gastric and pancreatic cancers. This compound can also be used as an impurity standard for HPLC analysis.</p>

<p>Methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (MTBC) is a drug target that is a carboxylate. MTBC has been shown to have potent inhibition activity against benzothiazine oxidases. MTBC can be used as an inhibitor of enzymes involved in the biosynthesis of benzothiazines and may be useful for the treatment of diseases such as Parkinson's disease and schizophrenia. The inhibition potential of MTBC has been unraveled through its interaction with peroxidases and other oxidases. In vitro studies have shown that MTBC can inhibit the oxidation of low molecular weight compounds by acting as a scavenger for hydrogen peroxide. This drug also exhibits unsymmetrical dehydration to produce methyl 4-(hydroxyamino)-2H-1,2-benzothiazine 1,1-dioxoate (MTBA), which is an</p>

<p>2-[[4-(2-Pyridylsulfamoyl)phenyl]azo]hydroxybenzene is an impurity found in sulfasalazine. It is a metabolite that is formed by the P450 system in the liver. The metabolic process of 2-[[4-(2-Pyridylsulfamoyl)phenyl]azo]hydroxybenzene has been studied in detail and has been shown to be a major contributor to the pharmacokinetic profile of sulfasalazine. This substance also exhibits antimicrobial activity and inhibits the growth of bacteria, fungi, and viruses.</p>

<p>Bromfenac sodium imp-B is an analytical standard that is used in drug development and research to measure the concentration of bromfenac in pharmaceutical products. Bromfenac sodium imp-B is a white to off-white crystalline powder with a melting point of about 230°C. It is soluble in methanol, ethanol, and acetone, but insoluble in water. Bromfenac sodium imp-B can be synthesized from the corresponding bromo acid chloride.</p>

<p>Ibuprofen EP impurity H is an impurity of ibuprofen. It is a white crystalline powder with a melting point of 182-184°C and a molecular weight of 253.3. Ibuprofen EP impurity H can be synthesized in high purity by reacting 4-bromobenzenesulfonyl chloride with 2-hydroxybenzoic acid in the presence of triethylamine. This impurity has been used as a standard for drug product analysis, pharmacopoeia standards, drug development, and metabolism studies. Ibuprofen EP impurity H can be identified by HPLC using a retention time of 17.2 minutes and an UV absorption maximum at 254 nm.</p>

<p>Torasemide Impurity E is a drug product that belongs to the group of impurities. It is a natural product and can be found in the environment. Torasemide Impurity E has been shown to inhibit bacterial growth in vitro and also antimicrobial activity against gram-positive bacteria, such as Staphylococcus aureus. Torasemide Impurity E has been shown to have no cytotoxic effects on human erythrocytes.</p>

<p>Hydroflumethiazide is a thiazide diuretic. It has also shown the activity of anti-hypertensive.</p>

<p>Mefruside is a diuretic indicated for the treatment of edema and hypertension.</p>

<p>Altizide is a thiazide diuretic. It is used to treat oedema and hypertension.</p>

<p>Pyroxasulfone is a pre-emergence herbicide that inhibits long-chain fatty acid production in plants.</p>

<p>Licogliflozin (LIK066) is an inhibitor of sodium-glucose cotransporter (SGLT1 and SGLT2).</p>

<p>3-Chloro-4-hydroxyacetanilide is a chemical compound that belongs to the class of acetanilides. It has long-term toxicity and is used as a drug substance in the production of aniline derivatives. 3-Chloro-4-hydroxyacetanilide has been shown to be carcinogenic in hamsters. The long term exposure to this chemical was shown to cause liver damage and increased incidence of tumours in rats. This drug also contains impurities and traces of chloride, chlorine, and thionyl chloride, which are toxic substances that can cause irritation or burns on contact with skin or eyes.</p>

<p>Xipamide (Diurexan) is a sulfonamide-based diuretic with antihypertensive properties. Xipamide selectively inhibits anion exchanger.</p>

<p>Amtolmetin guacil (ST-679) 抑制前列腺素合成和环氧合酶。 Amtolmetin guacil 具有与托美汀类似的 NSAID 特性，具有额外的镇痛、解热和胃保护特性。</p>

<p>Brodimoprim is an inhibitor of dihydrofolate reductase(DHFR).</p>

<p>Vaborbactam (RPX7009) is a β-lactamase inhibitor that is often used in conjunction with meropenem to study pneumonia and CRE infections.</p>

<p>Glibornuride is a blocker of ATP-sensitive K+ channel(pKi: 5.75).</p>

<p>Foramsulfuron is a potent ALS inhibitor and herbicide that inhibits plant growth, primarily targeting grass and broadleaf weeds in corn fields.</p>

<p>Bromfenac Related Compound A is a chemical impurity, which is often encountered during the synthesis and formulation of bromfenac, a non-steroidal anti-inflammatory drug (NSAID). This compound arises as a byproduct in the chemical synthetic pathway utilized in the production of bromfenac, necessitating stringent analytical methods to ensure product purity and compliance with pharmaceutical standards.The mode of action for Bromfenac Related Compound A itself is not typically characterized, as it is primarily the parent compound, bromfenac, that is pharmacologically active. Bromfenac works by inhibiting cyclooxygenase enzymes (COX-1 and COX-2) that mediate inflammatory processes. However, the related compound is investigated to understand the synthesis intricacies and to refine processes that limit its formation.Understanding and controlling the levels of Bromfenac Related Compound A is crucial in pharmaceutical applications, as the presence of impurities can affect the efficacy, safety, and overall quality of the drug product. Analytical chemists and pharmaceutical scientists study this compound extensively using chromatographic and spectroscopic techniques to ensure drug safety and compliance with regulatory guidelines.</p>

<p>Tribenuron, a slow acting sulfonylurea herbicide, controls broadleaf weed.</p>