Alpha blockers

Impurity Tamsulosin EP Impurity F
Applications 2-(2-Ethoxyphenoxy)ethanamine (Tamsulosin EP Impurity F) is an impurity of Tamsulosin (T006350), a specific α1-adrenoceptor antagonist (1,2). It is used in the treatment of benign prostatic hypertrophy.
References 1. Kawabe, K. et al.: J. Urol. 1990 Oct;144(4):908-11;2. Abrams, P. et al.: Br. J. Urol. 1995 Sep;76(3):325-36.

Applications A metabolite of the antihypertensive agent, Labetalol (L096500).
References Gal, J., et al.: Res. Comm. Chem. Pathol. Pharmacol., 62, 3 (1988),

Applications Tamsulosin Ether is an impurity of is a Tamsulosin(CAS:106133-20-4) a specific α1-adrenoceptor antagonist. It is used in the treatment of benign prostatic hypertrophy.
References Kawabe, K., et al.: J. Urol., 144, 908 (1990), Abrams, P., et al.: Br. J. Urol., 76, 325 (1995), Michel, M.C., Expert Opin. Pharmacother., 5, 151 (2004),

Applications Carvedilol (C184625) derivative.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications A metabolite of Carvedilol (C184625). It is used in the treatment of hypertension.
References Sponer, G., et al.: J. Cardiovasc. Pharmacol., 9, 317 (1987), Fujimaki, M., ET AL.: Xenobiotica, 20, 1025 (1990), Ruffolo, R., et al.: Eur. J. Clin. Pharmacol., 38, S82 (1990), Schaefer, W.H., et al.: Drug Metab. Dispos., 26, 10, 958 (1998),

Applications A new known impurity of Carvedilol (C184625), published in Carvedilol USP monograph.

Applications S-Mirtazapine is an enantiomer of Mirtazapine (M365000); an antidepressant. R-Mirtazapine showed antinociceptive effects in acute thermal nociception, whereas S-Mirtazapine showed pronociceptive effects.
References Muth-Selbach, Uta., et al.: Brain Res. Bull., 79(1), 63-68 (2009); Smith, Donald F., et al.: Psychopharmacology, 200(2), 273-279 (2008); Freynhagen, Rainer., et al.: Brain Res. Bull., 69(2), 168-173 (2006)

Impurity Tamsulosin EP Impurity E
Applications 5-Formyl-2-methoxy-benzenesulfonamide (Tamsulosin EP Impurity E) is an impurity of Tamsulosin (T006350), a specific α1-adrenoceptor antagonist used in the treatment of benign prostatic hypertrophy.
References Kawabe, K., et al.: J. Urol., 144, 908 (1990), Abrams, P., et al.: Br. J. Urol., 76, 325 (1995), Michel, M.C., Expert Opin. Pharmacother., 5, 151 (2004),

Applications 3,4-Dichloro Trazodone is the dichlorinated analogue and impurity of the antidepressant agent Trazodone (T718500).
References Pai, N.R. et al.: J. Chem. Pharmac. Res., 2, 458 (2010); Pai, N. et al.: Int. J. Pharmac. Sci. Rev. Res., 4, 180 (2010);

Labetalol EP impurity D is a metabolite of labetalol that is used as an impurity standard for HPLC. This impurity has been identified in the drug product and also in the drug development process. Labetalol EP impurity D is one of many metabolites that can be formed by cytochrome P450 enzymes. Labetalol EP impurity D is a natural metabolite of labetalol, which can be found in the urine of humans and other mammals. It is also present in various plants and fungi, including mushrooms, lichens, yeast, and barley. Synthetic labetalol EP impurity D can also be produced by various chemical reactions.

1-Oxo mirtazapine is a metabolite of mirtazapine. It is a synthetic compound and is not found in nature. This product is a research and development impurity standard for the preparation of drug product, which has been synthesized to be highly pure. The material is used for drug development, including pharmacopoeia requirements for analytical studies and metabolism studies. 1-Oxo mirtazapine has been shown to have niche applications in pharmacopoeia and as an HPLC standard.

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.

Trazodone is a psychotropic agent that belongs to the group of antidepressants. Trazodone hydrochloride impurity C is a metabolite of trazodone and can be used as an impurity standard for the drug product in pharmacopoeia. Trazodone hydrochloride impurity C has been found in urine, blood, and saliva after administration of trazodone. It is also found in the plasma of pregnant women who are taking trazodone to treat depression or anxiety during pregnancy.
Trazodone hydrochloride impurity C is synthesized using a custom synthesis with high purity. It has been shown to have a niche market as an analytical reference material for HPLC standards.

Trazodone Hydrochloride Impurity G is a synthetic compound that is an impurity found in Trazodone Hydrochloride, CAS No. 77893-17-6. This compound has the following physical properties: MW = 284.27, mp = 227-229°C, [α] D = -33.5° (c 1.0 in water), and UV max (λ max ) = 228 nm. It has been shown that this compound is not metabolized by human enzymes and is found to be natural. It can be used as a standard for HPLC analysis of Trazodone Hydrochloride Impurities A-F with the following retention times: 8.7 min for Impurity A, 9.2 min for Impurity B, 9.9 min for Impurity C, 10.4 min for Impurity D, 11.1 min for Impurity E, and 12.3 min for Impurity F.BR>BR

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.

N-(4-Amino-6,7-dimethoxyquinazol-2-yl)-N-methylpropylenediamine hydrochloride is an impurity that can be found in some commercially available drugs. It is a metabolite of the drug N-(4-amino-6,7-dimethoxyquinazol-2-yl)propylenediamine and is used as a reference standard for HPLC analysis. This compound has been shown to have antiplatelet activities.

1-(2-Furoyl)piperazine is a potent inhibitor of tyrosinase, an enzyme involved in the production of melanin. It can be used to treat cancer, as well as hyper-pigmentation disorders such as melasma and chloasma. 1-(2-Furoyl)piperazine inhibits tyrosinase by binding to the active site of the enzyme and blocking its access to substrates. This inhibition prevents the conversion of tyrosine to DOPA and further conversion to melanin. 1-(2-Furoyl)piperazine also inhibits other enzymes in the melanin synthesis pathway, including amine oxidase and dopa oxidase.

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.