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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Metolazone and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Metolazone 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 Metolazone-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 Metolazone Impurity 1
CAT No: CL-MTZN-NO-01 CAS No: NA Mol Wt: 394.8 Mol F:  C16H15ClN4O4S Inv Status: Custom Synthesis
Chemical Name:  7-Chloro-2-methyl-1-nitroso-4-oxo-3-(o-tolyl)-1,2,3,4-tetrahydroquinazoline-6-sulfonamide
N-Nitroso-Metolazone Impurity A
CAT No: CL-MTZN-NO-02 CAS No: NA Mol Wt: 394.83 Mol F: C16H15ClN4O4S Inv Status: Custom Synthesis
Chemical Name: 7-chloro-2-methyl-1-nitroso-4-oxo-3-(m-tolyl)-1,2,3,4-tetrahydroquinazoline-6-sulfonamide
N-Nitroso-Metolazone Impurity B
CAT No: CL-MTZN-NO-03 CAS No: NA Mol Wt: 394.83 Mol F: C16H15ClN4O4S Inv Status: Custom Synthesis
Chemical Name: 7-chloro-2-methyl-1-nitroso-4-oxo-3-(p-tolyl)-1,2,3,4-tetrahydroquinazoline-6-sulfonamide
N-Nitroso-Metolazone Impurity C
CAT No: CL-MTZN-NO-04 CAS No: NA Mol Wt: 380.8 Mol F: C15H13ClN4O4S Inv Status: Custom Synthesis
Chemical Name: 7-chloro-2-methyl-1-nitroso-4-oxo-3-phenyl-1,2,3,4-tetrahydroquinazoline-6-sulfonamide
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