N-Descarbo(1,4-benzodioxine), N-Acetyl Doxazosin-d8 Hydrochloride is the isotope analog of N-Descarbo(1,4-benzodioxine), N-Acetyl Doxazosin Hydrochloride. N-Descarbo(1,4-benzodioxine), N-Acetyl Doxazosin Hydrochloride is an impurity of doxazosin, which is used in biological studies to evaluate the structure activity or prazosin pharmacophore for Transport-P inhibition.