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Drug impurities are process-related compounds and degradation products linked to specific drug substances. Most entries carry the name of their parent drug and arise from starting materials, side reactions or breakdown during storage. ABZ-amine is related to the anthelmintic albendazole, and olanzapine ketolactam is a degradation product of olanzapine. The range extends from cetirizine methyl ester, an ester of the antihistamine cetirizine, to Calcitriol Impurities D and Gefitinib impurity 2. Researchers use such compounds in impurity profiling, in identifying unknown chromatographic peaks and in studies of degradation pathways. Environmental contaminants and stereoisomers of research compounds are grouped under Impurities & Reference Standards instead.
(D-Asn28)-Exenatide is an impurity of Exenatide, which functions as a long-acting agonist of the glucagon-like peptide-1 receptor. This compound may be used in research applications focusing on peptide synthesis, quality control, and pharmacological studies involving GLP-1 receptor pathways. Its significance lies in understanding the properties and effects of Exenatide-related compounds.
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(D-Asp28)-Exenatide is an impurity of Exenatide, which functions as a long-acting glucagon-like peptide-1 (GLP-1) receptor agonist. This compound plays a significant role in the regulation of glucose homeostasis and appetite control, making it relevant for research in diabetes and obesity. The characterization of this impurity is essential for understanding the pharmacological properties and ensuring the quality of Exenatide in therapeutic applications.
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3-Aminosalicylic acid is a key impurity associated with the synthesis of 5-Aminosalicylic acid, a known agonist of PPARγ and an inhibitor of p21-activated kinase 1 (PAK1) and NF-κB. This compound is primarily used in research related to inflammatory bowel diseases such as Crohn's disease and ulcerative proctitis. Its role in modulating these pathways makes it significant for studies focused on therapeutic interventions and drug development in gastrointestinal conditions.
(S)-Ponesimod is a chiral impurity associated with the selective S1P receptor modulator, Ponesimod. Its presence is relevant in the development and quality control of therapeutic formulations targeting autoimmune diseases. Research applications include assessing drug purity and understanding the pharmacokinetics of S1P receptor modulators.
