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An anti-inflammatory used in ulcerative colitis and Crohn's disease. It acts locally in the colon to reduce inflammation.
Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Mesalazine and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Mesalazine 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 Mesalazine-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 Mesalazine Impurity S
CAT No: CL-MALN-NO-01 CAS No: NA Mol Wt: 317.26 Mol F: C14H11N3O6 Inv Status: Custom Synthesis
Chemical Name: 5-amino-2-((3-carboxy-4-hydroxyphenyl)(nitroso)amino)benzoic acid
N-Nitroso Mesalazine Impurity 1
CAT No: CL-MALN-NO-02 CAS No: NA Mol Wt: 344.28 Mol F: C13H16N2O9 Inv Status: Custom Synthesis
Chemical Name: 2-hydroxy-5-(nitroso((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)amino)benzoic acid
N-Nitroso Mesalazine Impurity 2
CAT No: CL-MALN-NO-03 CAS No: NA Mol Wt: 210.15 Mol F: C8H6N2O5 Inv Status: Custom Synthesis
Chemical Name: 2-hydroxy-5-(N-nitrosoformamido)benzoic acid
N-Nitroso Metamizole
CAT No: CL-MALN-NO-04 CAS No: NA Mol Wt: 326.33 Mol F: C12H14N4O5S Inv Status: Custom Synthesis
Chemical Name: ((1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)(nitroso)amino)methanesulfonic acid
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