Salbutamol impurity-N Diacetate salt

Salbutamol impurity-N Diacetate salt is a diacetylated derivative of the parent compound's primary amine, featuring two acetyl groups esterified to the nitrogen atom. This modification introduces steric hindrance and alters polarity compared to Salbutamol's free amine, while retaining the aromatic hydroxyl and isopropyl substituents. The diacetate moiety forms a zwitterionic salt, enhancing crystallinity and stability under storage. Structurally, it represents a synthetic byproduct arising from acetylation during API synthesis or degradation pathways involving esterification. This compound serves as an HPLC reference standard for quantifying N-acylated impurities in Salbutamol formulations.