CAS 547730-06-3: Terazosin EP Impurity O

1,4-Bis[(tetrahydro-2-furanyl)carbonyl]-piperazine is a synthetic drug product. It is used as an analytical standard to help elucidate the metabolic pathway of drugs and their metabolites. This compound has been shown to be metabolized by various enzymes including CYP450, glutathione reductase, and esterases. It can also be synthesized from 1,4-dihydropyridine and 2-furancarboxaldehyde. The physical properties of 1,4-bis[(tetrahydro-2-furanyl)carbonyl]-piperazine are: white powder; mp 178°C; IR max 1710 cm−1 (CO); UV max 221 nm (EtOH). The impurities in this product are: 1-(2H)-Quinolinone (CAS No. 2467-94-1) which may have a maximum concentration

Impurity Terazosin EP Impurity O Applications 1,4-Bis[(tetrahydro-2-furanyl)carbonyl]-piperazine (Terazosin EP Impurity O) is a useful synthetic intermediate. It is a derivative of Terazosin (T105000(P)), which is an α-1-adrenergicblocker related to prazosin. References Patterson, S.E., et al.: J. Chromatog., 311, 206 (1984), Fort, F.L., et al.: Drug Chem. Toxicol., 7, 435 (1984), Lepor, H., et al.: J. Urol., 148, 1467 (1992),