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Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Clorazepate and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Clorazepate 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 Clorazepate-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.

Clorazepate EP Impurity A
CAT No: CL-CZEP-01 CAS No: 719-59-5 Mol Wt: 231.7 Mol F: C13H10ClNO Inv Status: Custom Synthesis
Chemical Name: (2-Amino-5-chlorophenyl)(phenyl)methanone (aminochlorobenzophenone)
Clorazepate EP Impurity B
CAT No: CL-CZEP-02 CAS No: 1088-11-5 Mol Wt: 270.7 Mol F: C15H11ClN2O Inv Status: Custom Synthesis
Chemical Name: 7-Chloro-5-phenyl-1,3-dihydro-2H-benzo[e][1,4]diazepin-2-one (nordazepam)
Clorazepate EP Impurity C
CAT No: CL-CZEP-03 CAS No: 5606-55-3 Mol Wt: 342.8 Mol F: C18H15ClN2O3 Inv Status: Custom Synthesis
Chemical Name: Ethyl (3RS)-7-chloro-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepine-3-carboxylate (Ethyl Clorazepate)
Clorazepate D5
CAT No: CL-CZEP-04 CAS No: NA Mol Wt: 319.8 Mol F: C16H6D5ClN2O3 Inv Status: Custom Synthesis
Chemical Name: 7-chloro-2-oxo-5-(phenyl-d5)-2,3-dihydro-1H-benzo[e][1,4]diazepine-3-carboxylic acid
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