1-Acetyl-4-(4-hydroxyphenyl)piperazine (CAT. No. CP-K2006, CAS No. 67914-60-7) is a phenolic piperazine derivative with molecular formula C12H16N2O2 and molecular weight 220.27 g/mol, structurally recognised as an acetaminophen analogue bearing an N-acetylpiperazinyl substitution at the para position. Manufactured at Chemicea under controlled synthesis conditions, this compound serves as a key process intermediate and impurity reference standard in the synthesis and quality evaluation of azole antifungal APIs, including Ketoconazole and its structural derivatives (also known as Ketoconazole Impurity 11). Each lot is rigorously characterized and supplied with a Certificate of Analysis (COA), supporting HPLC purity confirmation and structural verification for use in analytical method development, impurity profiling, and regulatory documentation. Chemicea offers this intermediate at mg to gram scale, backed by consistent batch-to-batch quality and global logistics support.