Alpha blockers

Phentolamine mesylate is an alpha-1 and alpha-2 selective adrenergic receptor antagonist

Applications A metabolite of Carvedilol (C184625). References McGurk, K., et al.: Biochem. Pharmacol., 55, 1005 (1998), Tukey, R., et al.: Annu. Rev. Pharmacol. Toxicol., 40, 581 (2000), Bowalgaha, K., et al.: Br. J. Clin. Pharmacol., 52, 605 (2001), Richardson, T., et al.: Drug Metab. Dispos., 34, 351 (2006),

1,4-Di-2-furoylpiperazine is a synthetic compound that has been shown to have anti-inflammatory and analgesic properties. It was originally developed as a pharmaceutical drug candidate for the treatment of arthritis and other inflammatory disorders. 1,4-Di-2-furoylpiperazine is an impurity in the synthesis of the drug product diclofenac. The compound is also found as a metabolite in humans after oral administration of diclofenac. 1,4-Di-2-furoylpiperazine binds to protein and inhibits protein synthesis by preventing amino acid incorporation into proteins. It also has nicotinic effects on acetylcholine binding sites and can be used as an analytical standard for HPLC analysis of drugs containing this molecule.

Trazodone hydrochloride impurity H is an impurity of the drug product Trazodone hydrochloride. It is a natural metabolite of Trazodone hydrochloride, which is synthesized in vivo by oxidation of the parent compound. Impurity H has been identified as a potential impurity standard for HPLC-UV analysis of Trazodone hydrochloride. The purity of this compound is 98.3% and it is available on a custom synthesis basis.

Alfuzosin EP Impurity F hydrochloride is a drug product that is used as an analytical standard for Alfuzosin hydrochloride. It is a natural, synthetic, and impurity standard that exhibits similar chromatographic properties to the API. The CAS number of this impurity is 19216-68-3. This product has a niche market because it is used in metabolism studies. It also exhibits high purity and pharmacopoeia grade quality.

Prazosin HCl, a synthetic antiadrenergic, treats hypertension, heart failure, and more by relaxing blood vessels with an unclear mechanism.

4-Amino-2-chloro-6,7-dimethoxyquinazoline (4ACDMQ) is a synthetic compound that has been used as a chemical intermediate. The chemical structure of 4ACDMQ is similar to that of the natural amino acid tryptophan. It is synthesized by reacting phosphorus pentachloride with 2,6,7-trimethoxyquinazoline in the presence of hydroxide solution and hexamethylphosphoramide. 4ACDMQ has been shown to be an inhibitor of ubiquitin proteasome system and has been used in functional studies on this system. The reaction yield for 4ACDMQ can be increased by using sodium hydroxide solution or n-dimethyl formamide as a solvent. Functional assays have shown binding properties for 4ACDMQ to proteins such as ubiquitin and proteasome subunits.

10-Oxo mirtazapine is a metabolite of the antidepressant drug mirtazapine. It is an impurity in the HPLC standard for mirtazapine and has been shown to be pharmacologically active in animal models. 10-Oxo mirtazapine has also been found to be an impurity in other drugs, such as fluoxetine hydrochloride, but it is not known if it has any activity.

Furegrelate is an analytical reference standard for the hydroxylation of 4-(4-amino-6,7-dimethoxy-2-quinazolinyl)-1-piperazinyl[(5S)-tetrahydro-5-methyl-2-furanyl]-methanone. Furegrelate is a synthetic drug product that has been used in pharmacological and toxicological research. It is a metabolite of the drug Furosemide, which is used to treat heart failure and high blood pressure. Furegrelate has also been found as an impurity in the API (active pharmaceutical ingredient) of other drugs such as Carvedilol and Metoprolol.

3-amino-2,6-dimethoxy-4-(4-amino-7-hydroxy-6-methoxyquinazolin-2(1H)-yl)piperazine (DMQA) is a synthetic compound. It is a racemate with two stereoisomers, which are mirror images of each other. The two stereoisomers have been characterized and the data for the two stereoisomers are provided in the table below. The data show that DMQA has high purity (>98%) and good stability at room temperature. DMQA is relatively stable under acidic conditions and can be used as an impurity standard in drug product manufacturing process monitoring.

N-(4-Amino-6,7-dimethoxyquinazol-2-yl)-N-methylpropylenediamine formamide hydrochloride is an impurity in the synthesis of N-(4-amino-6,7-dimethoxyquinazol-2-yl)-N'-methylpropylenediamine formamide hydrochloride. It is a white solid that can be used as an analytical reference standard for HPLC. It has been detected in the urine of people taking this drug and can be used to identify the presence of this drug in urine samples.

Aromatic or modified aromatic drugs with nitrogen heter