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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Fexofenadine and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Fexofenadine impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Fexofenadine-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

N-Nitroso Fexofenadine Impurity E
CAT No: CL-FXD-NO-01 CAS No: 1038-06-8 Mol Wt: 296.37 Mol F: C18H20N2O2 Inv Status: In Stock
Chemical Name: (1-nitrosopiperidin-4-yl)diphenylmethanol
N-Nitroso Fexofenadine Impurity 1
CAT No: CL-FXD-NO-02 CAS No: NA Mol Wt: 296.37 Mol F: C18H20N2O2 Inv Status: Custom Synthesis
Chemical Name: (1-nitrosopiperidin-3-yl)diphenylmethanol
N-Nitroso Fexofenadine Impurity 2
CAT No: CL-FXD-NO-03 CAS No: NA Mol Wt: 158.16 Mol F: C6H10N2O3 Inv Status: In Stock
Chemical Name: (S)-1-chlorosylpiperidine-3-carboxylic acid
N-Nitroso Fexofenadine Impurity 3
CAT No: CL-FXD-NO-04 CAS No: NA Mol Wt: 186.21 Mol F: C8H14N2O3 Inv Status: Custom Synthesis
Chemical Name: Ethyl 1-nitrosopiperidine-4-carboxylate
N-Nitroso Fexofenadine
CAT No: CL-FXD-NO-05 CAS No: NA Mol Wt: 280.37 Mol F: C18H20N2O Inv Status: In Stock
Chemical Name: 4-(diphenylmethyl)-1-nitroso piperidine
N-Nitroso Fexofenadine Impurity 9
CAT No: CL-FXD-NO-06 CAS No: NA Mol Wt: 278.35 Mol F: C18H18N2O Inv Status: In Stock
Chemical Name: 4-(diphenylmethylene)-1-nitrosopiperidine
N-Nitroso Fexofenadine Impurity 4
CAT No: CL-FXD-NO-07 CAS No: NA Mol Wt: 158.16 Mol F: C6H10N2O3 Inv Status: Custom Synthesis
Chemical Name: 1-nitrosopiperidine-3-carboxylic acid
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