APIs pour la recherche et les impuretés

Desgadolinium gadoteridol is a contrast agent that is used in magnetic resonance imaging (MRI). It is a gadolinium-based contrast agent that contains an ester linkage. The chelate complex of gadolinium with desgadolinium has been shown to have high water permeability and target tissue affinity, as well as low toxicity. Desgadolinium gadoteridol is used to diagnose inflammatory bowel diseases by determining the thickness of the bowel wall. This agent may also be used to evaluate blood pressure and diagnose hemorrhoids or colorectal polyps.

1,3-bis(1,1-Dimethylpropyl) benzene is a synthetic compound that is used in drug product formulation. It is also used as an analytical standard for the determination of 1,3-bis(1,1-dimethylethyl)benzene in drug products and as a natural impurity in API preparations. This compound is metabolized to 1,3-dibromobenzene and 1,2-dibromoethane during its metabolic process. The chemical properties of this compound are similar to those of other alkylbenzenes and it has been shown to have pharmacological effects such as analgesic and antiinflammatory activities.

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Deterenol acetate is a drug product that is used as an analytical standard. It has been shown to be a natural metabolite of the synthetic drug deterenoic acid, which is an impurity in API preparations of the drug. Deterenol acetate has been shown to have anti-inflammatory effects and may be useful for treating cardiovascular disease, cancer, and arthritis. Deterenol acetate has also been shown to have potential as a treatment for high blood pressure.

Acetylsalicylic acid sodium salt is a potent inhibitor of kinases in both human and Chinese cells. It is an analog of salicylic acid and has been shown to inhibit the growth of cancer cells in vitro. Acetylsalicylic acid sodium salt also induces apoptosis, or programmed cell death, in cancer cells. Additionally, it has been shown to inhibit heparin-induced platelet aggregation and reduce the risk of blood clots. This drug has potential anticancer properties due to its ability to inhibit chitin synthesis, which is necessary for tumor growth and survival. Acetylsalicylic acid sodium salt may be useful as a therapeutic agent for the treatment of cancer and other diseases associated with abnormal kinase activity.

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.

Valdecoxib dimer is a drug product that has been custom synthesized to meet the customer's requirements. It is an analytical standard and is available in high purity. Valdecoxib dimer has been shown to be metabolized through a number of metabolic transformations, including hydrolysis by esterases or glucuronidases, oxidation by cytochrome P450 enzymes, reduction by glutathione reductase, or conjugation with glucuronic acid. Valdecoxib dimer also specifically binds to markers expressed at high levels in Mycobacterium tuberculosis strains (e.g., ESX-1 secretion system protein) and inhibits cell growth in culture. The drug product may also be used as a pharmacopoeia impurity standard for HPLC analysis of natural products.

Ethosuximide impurity A is a fluorinated compound that inhibits the enzyme acetylcholinesterase. It has been shown to inhibit the catalytic mechanism of acetylcholinesterase, which leads to its inhibitory effect on the enzyme. The compound does not have any structural similarity to the other known inhibitors of this enzyme. Ethosuximide impurity A has been shown to be an antimutagen and anticarcinogen in vitro, with a postulated mechanism of action that involves inhibition of a water molecule from binding to the active site.

Amoxicillin EP Impurity H is a potassium clavulanate that is found in Amoxicillin EP. It has bactericidal activity against gram-negative bacteria and can be used to treat infections caused by these bacteria. Amoxicillin EP Impurity H is resistant to many antibiotics, including penicillins, cephalosporins, erythromycin, and tetracyclines. This impurity can be detected using an elemental analysis of the sample or by liquid chromatography with a detection limit of 100 ppm.

(2RS)-2-(Cyclohex-1-enyl)-2-(4-methoxyphenyl)-N,N-dimethylethanamine Hydrochloride is a white crystalline powder with a melting point of 136.5°C and a molecular formula of C13H20N2O. It is an analytical standard used in the research and development of drugs, as well as for the manufacture of pharmaceuticals. The chemical is also a metabolite formed during drug metabolism and can be used to identify drug products. (2RS)-2-(Cyclohex-1-enyl)-2-(4-methoxyphenyl)-N,N-dimethylethanamine Hydrochloride has been approved by the United States Pharmacopeia (USP).

Please enquire for more information about 4-Acetyl-3,4-dihydro-2H-pyrido[3,2-b]oxazine including the price, delivery time and more detailed product information at the technical inquiry form on this page

Δ2-Cefuroxime is a prodrug that is hydrolyzed in vivo to cefuroxime, its active form. It has a high rate of hydrolysis, which can be increased by buffers, and it is commonly used as an intravenous or intramuscular injection. Δ2-Cefuroxime has two isomeric forms: the cis-isomer and trans-isomer. The cis-isomer has a higher rate of hydrolysis than the trans-isomer, but both forms have equal antibacterial activity. In addition, Δ2-cefuroxime can be converted into erythromycin.

(betaR,deltaR)-2,3-Bis(4-fluorophenyl)-beta,delta-dihydroxy-5-(1-methylethyl)-4-[(phenylamino)carbonyl]-1H-pyrrole-1-heptanoic acid hemicalcium salt is an impurity that is used in the production of a drug product. This product is metabolized to (betaR,deltaR)-2,3-bis(4-fluorophenyl)-beta,delta-dihydroxy-5-(1-methylethyl)-4-[(phenylamino)carbonyl]-1H-pyrrole 1 heptanoic acid which is used as an analytical standard for HPLC.

Surfactin is a cyclic lipopeptide that has been found in urine and has shown potential as an anticancer agent. It has been shown to inhibit kinases, including indirubin and Chinese hamster ovary cell tumor kinase, which are involved in cancer cell proliferation. Surfactin analogs have also been developed as inhibitors of cancer cell growth and inducers of apoptosis. In addition to its anticancer properties, surfactin has been found to have antimicrobial activity against a variety of bacteria, including Clostridium perfringens. Overall, surfactin shows promise as a multifunctional therapeutic agent with potential applications in both cancer treatment and microbial control.

Lincomycin impurity B is a chemical substance which is the result of the metabolism of lincomycin. It is found in the urine and feces of patients who have taken lincomycin orally. Lincomycin impurity B has been detected in various commercial formulations of lincomycin, but its concentration varies with different batches. The HPLC standard purity for lincomycin impurity B is up to 99%. Lincomycin impurity B can be used as an analytical standard for HPLC analysis and as an API impurity in drug development. It also may be used as a research metabolite or pharmacopoeia reference material.

3-(Cyanomethyl)-N-methyl-1H-indole-5-methanesulfonamide is an analytical standard, used for HPLC analysis of impurities. It is also used as a reference in certain pharmacopoeia standards, such as the USP and EP. 3-(Cyanomethyl)-N-methyl-1H-indole-5-methanesulfonamide has a purity of 99% and can be found in the drug product Impurity Standard.

1,8,15,22-Tetraazacyclononacosane-2,9,16,23-tetrone is a potent inhibitor of kinases that have been shown to be involved in the growth and survival of cancer cells. This compound was isolated from Chinese urine and has been found to induce apoptosis in cancer cells by inhibiting kinase activity. The analogs of this compound have been developed as anticancer agents due to their ability to inhibit cyclin-dependent kinases (CDKs) that are involved in cell cycle regulation. This inhibitor has shown promising results in preclinical studies for the treatment of various types of tumors, including breast cancer and lung cancer. It is a potential candidate for further development as an anticancer drug due to its high specificity towards human kinases and low toxicity towards healthy cells.