N-2-Hydroxy-3-[[2-(methoxyphenoxy)ethyl]amine Carvedilol-d5 is the isotope labelled analog of N-2-Hydroxy-3-[[2-(methoxyphenoxy)ethyl]amine Carvedilol (H946145); the impurity A of Carvedilol (C184625) which is a nonselective β-adrenergic blocker with α1-blocking activity. Carvedilol is also an antihypertensive used in the treatment of congestive heart failure. Molecular Formula: C36H38D5N3O7 Molecular Weight: 634.77