N-halamine compound NM-1: a novel active ingredient for liquid disinfectants

Overview

NM-1 is a novel N-halamine molecule developed as a next-generation active ingredient for liquid disinfectants. It is designed to overcome the well-known limitations of quaternary ammonium compounds (quats), which dominate today's disinfectant market but are associated with rising microbial resistance and environmental persistence. NM-1 aims to combine the potency and broad-spectrum performance of chlorine chemistries with the favorable handling properties of quats, including being odorless and non-bleaching.

The core value proposition for industry partners is a single active ingredient that can deliver strong, fast antimicrobial kill, pass EPA toxicity requirements, remain stable on the shelf for over a year, and be manufactured at commercial scale at a cost comparable to or lower than existing quats. This makes NM-1 attractive for formulators of hard-surface disinfectants, healthcare cleaning products, food-service sanitizers, and consumer hygiene brands seeking differentiated, safer, and more sustainable active ingredients.

Technical specifications

Key features and performance:

• Achieves greater than 5-log10 bacterial reduction in 5 minutes at concentrations below 0.2%; internal testing has shown greater than 6-log10 reduction of both gram-positive and gram-negative bacteria within 30 minutes at concentrations below 0.1%
• Broad-spectrum antimicrobial activity, combining the potency of chlorine with the odorless, non-bleaching characteristics of quats
• Designed to meet EPA Pre-Manufacture Notification (PMN) and FIFRA toxicity registration requirements with a lower toxicity profile than quats
• In vitro mutagenicity screening and in vivo acute toxicity testing indicate NM-1 is non-mutagenic with acceptable acute toxicity
• Stable in neutral-pH aqueous solutions at room temperature for over 6 months in ongoing testing, with an anticipated shelf life of more than 1 year
• Manufactured at kilogram scale using inexpensive, readily available raw materials
• Decomposes into a non-active form after use, reducing long-term environmental accumulation compared to quats

Validation approach:

• AOAC Use-Dilution Test against S. aureus, P. aeruginosa, and fungi to confirm EPA hard-surface disinfection criteria
• ASTM E1053 virucidal testing targeting at least 3-log10 reduction of a Norovirus surrogate in under 5 minutes
• Accelerated shelf-life testing to verify the targeted greater than 1-year product stability

Technology readiness level

NM-1 is at an early-to-mid stage of development. The molecule has been synthesized and characterized, with internal efficacy, toxicity, and stability data already generated. Manufacturing feasibility has been demonstrated at kilogram scale. A 6-month proof-of-concept study is planned to formally validate efficacy against EPA-required organisms, confirm virucidal performance, and verify long-term shelf stability. Successful completion of this program would position NM-1 for EPA registration and downstream formulation partnerships with disinfectant manufacturers.