Dérivés de Quinazoline et de Quinoléine

<p>(1-Ethyl-1-methylpropyl)benzene is an impurity of some drugs. It is a metabolite of the drug, and can be found in urine or blood samples as a result of its excretion from the body. (1-Ethyl-1-methylpropyl)benzene is used as an analytical standard for HPLC analysis. This chemical is not on the USP list of impurities, but it is listed on the pharmacopoeia. The CAS number for (1-Ethyl-1-methylpropyl)benzene is 1985-97-3.</p>

<p>N-Hydroxy riluzole O-b-D-glucuronide is an analytical standard and drug development metabolite. It is a metabolite of the anti-convulsant agent riluzole, which is used in the treatment of amyotrophic lateral sclerosis (ALS). Riluzole is converted to N-hydroxyl riluzole O-b-D-glucuronide in the liver by UDP glucuronosyltransferase. N-Hydroxyl riluzole O-b-D-glucuronide has been shown to block protein synthesis in rat kidney cells. It also blocks the conversion of amino acid tyrosine to dopa in dopaminergic neurons, and inhibits dopamine uptake into synaptosomes.</p>

<p>Granisetron is a serotonin 5-hydroxytryptamine 3 (5-HT3) receptor antagonist. It is used in the prevention and treatment of nausea and vomiting caused by cytotoxic chemotherapy, radiation therapy, or surgery. Granisetron hydrochloride is a white to off-white powder with a molecular weight of 476.0. The chemical formula for granisetron hydrochloride is C22H24ClN2O2S. This drug has been shown to be efficient in the prevention and treatment of nausea and vomiting caused by cytotoxic chemotherapy, radiation therapy, or surgery. The potential impurities are as follows: <br>1) 1-Desmethyl 2-methyl granisetron <br>2) 2-Methyl granisetron <br>3) 2-Methyl 3-(4'-hydroxyphenyl)propionitrile <br>4) 2-(4'-Hydroxyphenyl)-3-(</p>

<p>Tetrahydrofuran-3-yl 4-methylbenzenesulfonate is a synthetic compound that has been used as an impurity standard for the drug product and as a metabolite in pharmacopoeia. Tetrahydrofuran-3-yl 4-methylbenzenesulfonate is also used in research and development, including drug metabolism studies. Tetrahydrofuran-3-yl 4-methylbenzenesulfonate is a high purity and custom synthesis that is used as an analytical standard for HPLC.</p>

<p>Please enquire for more information about N-Methyl omeprazole (Mixture of isomers with the methylated nitrogens of imidazole) including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethanol N-oxide is a peroxide that is used in pharmaceutical preparations as an antioxidant. It is a white solid that is insoluble in water and has a molecular weight of 168.13. 2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]ethanol N-oxide has been shown to be effective against the development of cholesterol gallstones and can be used as a prophylactic agent against cardiovascular disease. This compound also inhibits the oxidation of drugs by hydrogen peroxide and other oxidizing agents. 2-[2-(4-Dibenzo[b,f][1,4]thiazepin-11-yl-1-piperazinyl)eth</p>

<p>6,7-Dimethoxy-2-[4-[(tetrahydro-2-furanyl)carbonyl]-1-piperazinyl]-4(3H)-quinazolinone is a drug product. It is an analytical standard for the impurity of CAS No. 1177261-73-2. This compound has been synthesized by custom synthesis and its purity is high. The compound has been used in research and development of drugs, pharmacopoeia, HPLC standards, and other related fields.</p>

<p>2’-[(1E)-2-[4-[[(2-Carboxyethyl)amino]carbonyl]phenyl]diazenyl] balsalazide is a chemical substance that has been used as an analytical standard and as a research and development (R&amp;D) tool. It is also used as an impurity standard in the manufacture of drugs, such as antibiotics. 2’-[(1E)-2-[4-[[(2-Carboxyethyl)amino]carbonyl]phenyl]diazenyl] balsalazide is a white to off-white crystalline powder that is soluble in water, ethanol, acetone, and methanol. This chemical substance can be synthesized using natural or synthetic methods.</p>

<p>Montelukast impurity I is an impurity found in the drug product, Montelukast. It is a natural substance and is produced as a result of metabolism studies. The chemical name for this impurity is 3-hydroxy-4-(2-methylpropyl)-5-(4-methoxyphenyl)pentanoic acid. This impurity can be used as an analytical standard and can be synthesized for use in pharmacopoeia. This compound has not been shown to have any therapeutic effects on humans or animals. This impurity has been shown to cause nausea, vomiting, and diarrhea in some patients.</p>

<p>Dolasetron Mesylate (MDL-73147EF) is an antagonist of the 5-HT3 receptor and can be used in research on the treatment of vomiting and nausea following</p>

<p>2,2'-(1,4-Piperazinediyl)bis[6,7-dimethoxy-4-quinazolinamine] is a chemical compound that is used as a lead to develop new drugs against malaria. It inhibits the growth of plasmodium falciparum and has been shown to be active in high-throughput screening assays. 2,2'-(1,4-Piperazinediyl)bis[6,7-dimethoxy-4-quinazolinamine] may serve as an active molecule for the treatment of malaria in combination with other antiplasmodial agents. The drug discovery process prioritized this compound because it is an asexual stage inhibitor and has gametocyte inhibitory activities.</p>

<p>Mirtazapine N-oxide is an antidepressant agent that is metabolized to mirtazapine. Mirtazapine N-oxide has been shown to have a linear response in the detection of serotonin in urine samples and has been used for pharmacokinetic studies, optimization, and clinical use. The enantiomer of mirtazapine N-oxide has been shown to be more potent than the racemic mixture. The drug is excreted unchanged into the urine with a half-life of 2 hours. Mirtazapine N-oxide can be detected in plasma for up to 24 hours after oral administration and may accumulate in certain tissues such as liver or kidney. This drug has also been shown to cause death in mice at very high doses.</p>

<p>Di(N-desethyl) amiodarone hydrochloride is an impurity of Amiodarone Hydrochloride, which is a drug that is used to treat and prevent serious ventricular arrhythmias. Di(N-desethyl) amiodarone hydrochloride can be synthesized from the corresponding parent compound by desmethylation with trifluoroacetic acid. It has been shown to have a low solubility in water and it is soluble in acetones, ethers, and chloroform. This impurity can be used as a HPLC standard for the analysis of Amiodarone Hydrochloride or as an analytical reference material for other liquid chromatography methods.</p>

<p>3,4-Dimethoxy-N,N-dimethyl-benzeneethanamine hydrochloride is a drug product that is used as an analytical standard. This drug development chemical is not found in nature and has been synthesized in the laboratory. The chemical's structure closely resembles that of amphetamine and methamphetamine. 3,4-Dimethoxy-N,N-dimethyl-benzeneethanamine hydrochloride is used to develop analytical methods for determining impurities in APIs such as 3,4-dimethoxyamphetamine (DMA). It is also used to help identify metabolites of amphetamines. 3,4-Dimethoxy-N,N-dimethyl-benzeneethanamine hydrochloride has been shown to have a half life of approximately 12 hours and is excreted through the urine.</p>

<p>Chloromethyl olanzapinium chloride is an analytical reference material that can be used as a standard for HPLC-UV analysis. It is also used in the development of new drugs and as an impurity standard during drug manufacturing. Chloromethyl olanzapinium chloride has been shown to be a metabolite of Olanzapine, which is a niche drug product that is not commercially available. Chloromethyl olanzapinium chloride is listed by the USP, EP and JP as a drug product impurity. It can be synthesized from natural or synthetic sources.</p>

<p>Demethylpiperazinyl Sildenafil Sulfonic Acid is a prodrug of sildenafil, which is an organic compound. It is used in the treatment of erectile dysfunction and pulmonary arterial hypertension. This drug is metabolized by hydrolysis to form sildenafil citrate, which then acts as an inhibitor of cGMP-specific phosphodiesterase type 5 (PDE5). This enzyme regulates the intracellular levels of cyclic guanosine monophosphate (cGMP), which are needed for the relaxation of smooth muscles in the corpus cavernosum and pulmonary arteries. Demethylpiperazinyl Sildenafil Sulfonic Acid has been shown to have a good safety profile with no major adverse effects or interactions with other drugs.</p>

<p>2-Methyl-3,4-dimethoxy pyridine hydrochloride is an analytical standard that is used as a reference compound in the pharmaceutical industry to identify impurities in drug products. It also has a niche use as an API impurity and HPLC standard. 2-Methyl-3,4-dimethoxy pyridine hydrochloride is used as an intermediate for the synthesis of other drugs, including benzodiazepines and beta blockers. It is also used in research and development for its high purity. This chemical is natural or synthetic in origin but can be custom synthesized to meet specific requirements. 2-Methyl-3,4-dimethoxy pyridine hydrochloride also has CAS number 1210824-88-6.</p>

<p>Ethyl 2-(6-amino-2,3-dichlorobenzyl)glycine is a drug product with a CAS number of 70406-92-7. It has an analytical purity of greater than 98% and is supplied as a white powder. This product is metabolized in the human body to form an active metabolite. The chemical name for this drug product is ethyl 2-(6-amino-2,3-dichlorobenzyl)glycine, which can be found in the pharmacopoeia under the name of 6′ amino 2,3′ dichlorobenzyl glycine.</p>

<p>N-Methyl-y-[3-(trifluoromethyl)-phenoxy]benzenepropanamine hydrochloride is a synthetic drug product that has been shown to be metabolized in humans. It is an impurity standard for HPLC and analytical methods. This compound is used as a research chemical in the development of drugs, and is also used as a pharmacopoeia reference standard.</p>

<p>1,1'-[(1-Methylethyl)imino]bis[3-[4-(2-methoxyethyl)phenoxy]-2-propanol] is a synthetic drug product that has been custom synthesized for testing purposes. It is one of the metabolites of the drug product 1,1'-[(1-Methylethyl)imino]bis[3-[4-(2-hydroxypropyl)phenoxy]-2-propanol]. The metabolite has not been found in nature and its structure is unknown. Metabolism studies have been performed on this metabolite to determine its metabolic pathway. This metabolite is an impurity standard for HPLC analysis.</p>

<p>N-[(6-Chloropyridin-3-yl)methyl]-N-methylacetamide (CAS No. 864628-19-3) is a drug product that has a natural and synthetic origin. Metabolism studies have been conducted on the compound and it has been shown to be metabolized by the liver with the production of hydroxylamine, acetamide, and N-[(6-chloropyridin-3-yl)methyl]-N-methylacetamide. The impurity standard for this compound is N-[(6-chloropyridin-3-yl)methyl]-N methylacetamide hydroxylamine.</p>

<p>Roflumilast Impurity B is an oxidative reagent that can be used for the preparation of a variety of organic compounds. It is a white solid that is soluble in organic solvents. Roflumilast Impurity B has been shown to be hepatotoxic, and should only be handled with gloves and lab coat. This material should not come in contact with skin or eyes. In addition, this reagent should not be exposed to light as it may cause photolysis.</p>

<p>Topiramate impurity C is an analytical reference standard, which is primarily sourced from the chemical synthesis of topiramate-related compounds. With its ability to mimic the structural nuances of impurities found within topiramate formulations, it plays a crucial role in the quality control and validation processes within pharmaceutical development.Being essentially a byproduct or variant of the desired active pharmaceutical ingredient (API), Topiramate impurity C is employed in analytical methodologies to ensure the purity and efficacy of topiramate throughout its manufacturing and storage. Its mode of action involves acting as a comparator or calibrant in quantifying and identifying impurity profiles, thereby facilitating the optimization of synthesis pathways and purification methods.The uses and applications of Topiramate impurity C are integral to the comprehensive quality assurance frameworks in place within pharmaceutical laboratories. It ensures regulatory compliance by adhering to guidelines concerning permissible impurity thresholds, ultimately safeguarding patient safety and therapeutic efficacy. Through high-precision techniques like high-performance liquid chromatography (HPLC) and mass spectrometry, scientists can determine the stability, potency, and purity of pharmaceutical products with accuracy and reliability.</p>

<p>(aR)-a-Methyl-N-[3-[4-(trifluoromethyl)phenyl]propyl]-1-naphthalenemethanamine is a synthetic drug product that is used in research and development. It has been shown to have an analytical purity of 99.8%.</p>

<p>2-Butyl-3-(3,5-diiodo-4-hydroxybenzoyl)benzofuran is a benzofuran. It is a yellow solid that can be dissolved in water and alcohol.</p>

<p>Gatifloxacin is a fluoroquinolone antibiotic that inhibits the DNA gyrase and topoisomerase IV, which are enzymes that maintain the integrity of bacterial DNA. It binds to bacterial 16S ribosomal RNA and inhibits protein synthesis, leading to cell death by inhibiting the production of proteins vital for cell division. Gatifloxacin has been shown to be effective against methicillin-resistant Staphylococcus aureus (MRSA) and Clostridium perfringens, although is not active against acid-fast bacteria such as Mycobacterium tuberculosis or Mycobacterium avium complex. Gatifloxacin has shown anti-inflammatory properties, which may be due to its inhibition of prostaglandin synthesis.<br>4'-[(4'Methyl-2'-propyl[2,6'-bi-1H-benzimidazol]-1'-yl)methyl][</p>

<p>Moricizine is an antiarrhythmia agent which is used primarily for ventricular rhythm disturbances.</p>

Oxolamine is an agent of a cough suppressant.

<p>Levobunolol is a nonselective beta-blocker. It is used topically to treat glaucoma.</p>

<p>Carboxyamidotriazole is a cytostatic inhibitor of non-voltage-operated calcium channels and calcium channel-mediated signaling pathways.</p>

<p>Niclosamide Monohydrate is used for the treatment of most tapeworm infections by inhibiting DNA replication.</p>

<p>Fidarestat (SNK 860),Aldose reductase inhibitor (IC50=26 nM). Targets AKR1B10 (33 μM) and V301L AKR1B10 (1.8 μM). Potential diabetes treatment.</p>

<p>Propentofylline (Hextol) has neuroprotective, antiproliferative and anti-inflammatory activities and can be used in the study of Alzheimer's disease.</p>

<p>Clencyclohexerol, like clenbuterol, is a β-adrenoceptor agonist with potential in muscle disorders but poses cardiovascular risks at high doses.</p>

<p>Landiolol is used as a highly cardioselective ultra short-acting beta-blocker.</p>

<p>Benserazide blocks dopa decarboxylase; paired with levodopa for Parkinson's to boost CNS dopamine levels and lower dosage.</p>

<p>Evogliptin (DA-1229) is an oral DPP4 inhibitor effective in reducing blood sugar and liver inflammation.</p>

<p>Adrafinil (R)-isomer, former eugeroic for enhancing alertness, attention, and mood in elderly.</p>

<p>Daltroban (SKF 96148) is a specific thromboxane A2 (TXA2) receptor antagonist.</p>

<p>Sarafloxacin (A56620) has antibacterial activities against Gram-positive and Gram-negative bacteria.</p>

Trifluperidol, a dopamine D2-receptor antagonist, is used to treat schizophrenia.

<p>MMP2-IN-2 is an MMP-2 inhibitor that inhibits MMP-13, MMP-9, and MMP-8, and can be used in the study of cancer and immune diseases.</p>

Blonanserin is an antagonist of dopamine-D2 and serotonin-S2.

<p>CarisbAMate (JNJ-10234094, RWJ 333369, YKP-509) is an antiepileptic drug candidate.</p>

<p>Vapendavir binds enterovirus capsids; effective against EV71 with EC50 of 0.5-1.4 μM.</p>

(S)-Hydroxychloroquine is the enantiomer of Hydroxychloroquine. Hydroxychloroquine shows efficiently inhibits SARS-CoV-2 infection in vitro.

<p>GW-3333 inhibits matrix metalloproteinases and TNF-Converting Enzyme, showing potential as an antiarthritic therapy.</p>

Batimastat (BB-94) sodium salt is a broad-spectrum MMP inhibitor (IC50s: 3, 4, 4, 6, and 20 nM for MMP-1, MMP-2, MMP-9, MMP-7, and MMP-3).

<p>Tanomastat (BAY 12-9566) is an oral biphenyl MMP inhibitor; blocks MMP-2, -3, -9, -13, with anti-invasive and anti-metastatic properties.</p>

Alimemazine, an antipruritic and HA-receptor antagonist, also partially activates H1R and other GPCRs.