Category:
Active Pharmaceutical Ingredients
CAS NO:
53242-88-9
Standard:
USP,
Azelastine Impurity D (USP) is a specified degradation product of the antihistamine Azelastine. It serves as a critical reference standard for quality control in pharmaceutical manufacturing to ensure compliance with USP monographs. The compound is typically identified via molecular formula C21H25ClN4O2 and CAS No. 117608-93-2.