1-Cyclopentyl-4-Nitrosopiperazine (CAT. No. CP-NIT030; CAS No. 61379-66-6) is a specialised reference material supplied by Chemicea Pharmaceuticals for pharmaceutical research and analytical applications. With the molecular formula C9H17N3O and molecular weight 183.25 g/mol, it is suitable for impurity identification, method development, and analytical reference comparisons. This compound supports laboratories involved in impurity profiling, analytical method validation, and quality control research. Chemicea Pharmaceuticals provides this reference material with supporting documentation to facilitate traceability and reliable use in regulated laboratory workflows. It is intended for research and analytical purposes, including pharmaceutical testing and impurity monitoring applications.