Benzylhydroxylamine hydrochloride

Updated: 2026-07-22

Overview

N-Benzylhydroxylamine Hydrochloride is an organic compound primarily used as a reagent in chemical synthesis. It features a benzyl group attached to a hydroxylamine moiety, with the hydrochloride salt enhancing its stability. This compound is valued for its nucleophilic properties, making it useful in the formation of various heterocyclic compounds and pharmaceutical intermediates. Its synthesis typically involves the reduction of nitrobenzyl compounds followed by hydrochlorination. The hydrochloride form is preferred in industrial applications due to its improved handling characteristics compared to the free base. The compound's reactivity and stability profile make it a versatile building block in medicinal chemistry and material science research.

Physical and Chemical Properties

N-Benzylhydroxylamine Hydrochloride presents as a white to off-white crystalline powder with moderate solubility in water and polar organic solvents like methanol or ethanol. The compound exhibits thermal instability at temperatures approaching its melting point (145-150°C), where decomposition typically occurs. Chemically, it functions as a potent nucleophile due to the hydroxylamine group, participating in reactions with carbonyl compounds to form oximes and with activated double bonds in Michael additions. The hydrochloride salt form increases its crystalline stability and shelf life compared to the free base, though it remains hygroscopic and requires careful moisture control during storage.

Main Applications

In pharmaceutical manufacturing, N-Benzylhydroxylamine Hydrochloride serves as a key intermediate for producing various active pharmaceutical ingredients (APIs), particularly those containing N-O bonds or benzyl-protected functional groups. It's frequently employed in the synthesis of hydroxamic acids, which find use in medicinal chemistry as enzyme inhibitors. The compound also sees application in materials science for creating specialized polymers and in agrochemical research for developing novel crop protection agents. Its ability to form stable complexes with certain metal ions makes it valuable in some analytical chemistry procedures and catalyst systems. Research laboratories utilize it for constructing complex molecular architectures in total synthesis projects.

Safety and Storage

As a hydrochloride salt of an organic base, N-Benzylhydroxylamine Hydrochloride requires careful handling to prevent exposure. It can cause irritation to skin, eyes, and respiratory system upon contact or inhalation. Appropriate personal protective equipment including gloves, goggles, and lab coats should be worn when handling this chemical. For long-term storage, the compound should be kept in tightly sealed containers under cool (preferably 2-8°C), dry conditions, protected from light. Containers should be clearly labeled with hazard information. In case of spills, absorb with inert material and dispose according to local regulations. The material shows good stability when stored properly, but should be checked for discoloration or clumping before use in critical applications.

B2B Procurement Guide

When sourcing N-Benzylhydroxylamine Hydrochloride for industrial or research purposes, buyers should prioritize suppliers who provide comprehensive analytical certificates (CoA) detailing purity (typically 97-99%), residual solvents, and heavy metal content. Pharmaceutical-grade material should have appropriate GMP documentation if intended for API synthesis. Lead times can vary from 2-6 weeks depending on supplier inventory, so planning purchases in advance is advisable. Consider ordering smaller test quantities for quality verification before large-volume procurement. Technical specifications should clearly state the CAS number (2687-43-6) to avoid confusion with similar compounds. Some suppliers offer custom packaging options for bulk quantities to optimize storage and handling.