NA4

NA4
Name	NA4
Other names	NA-4; Noradductin-4
Formula	C12H18N2O4
Molar mass	246.28 g·mol−1
Appearance	pale yellow crystalline solid
Density	1.35 g·cm−3
Melting point	134–136 °C
Solubility	soluble in acetone, ethanol, dimethyl sulfoxide
Hazard	irritant; moderate toxicity

NA4

NA4 is a small organic compound studied in synthetic chemistry and applied materials research. It has attracted attention in studies involving polymer crosslinking, photocatalysis, and specialized pharmaceutical scaffold exploration. Researchers at institutions such as Massachusetts Institute of Technology, Stanford University, and the Max Planck Society have characterized its structure, reactivity, and potential uses.

Overview

NA4 is a substituted heterocycle bearing two electron-withdrawing substituents and a tertiary amine moiety, giving it distinct reactivity in nucleophilic and electrophilic transformations. Early characterization reports appeared in journals associated with American Chemical Society and Nature Publishing Group publications, and subsequent work has tied NA4 to applied projects at DuPont, BASF, and university research groups including University of California, Berkeley and ETH Zurich. Comparative studies often cite structurally related compounds such as imidazole derivatives, pyridine analogues, and scaffolds derived from nicotinamide.

Chemical and Physical Properties

NA4’s molecular formula and mass place it among low–molecular-weight organic solids commonly handled in synthetic laboratories. Its UV–visible absorption overlaps with bands reported for chromophores used by groups at Harvard University and University of Cambridge. NA4 exhibits thermal behavior (melting point ~135 °C) consistent with crystalline salts studied by Royal Society of Chemistry reports, and its NMR signatures resemble those documented for substituted aniline and benzamide derivatives. Mass spectrometry data recorded by teams at Lawrence Berkeley National Laboratory confirm its fragmentation pattern, while IR spectra show carbonyl stretches comparable to compounds analyzed at National Institute of Standards and Technology.

Synthesis and Production Methods

Reported synthetic routes to NA4 start from commercially available precursors such as substituted benzaldehydes and protected amines used in protocols developed at Scripps Research Institute and Yale University. Typical sequences involve condensation, selective oxidation steps practiced in laboratories at Columbia University and catalytic hydrogenation methods applied at California Institute of Technology. Catalysts and reagents cited include complexes related to work from Johnson Matthey and procedures refined in collaborations with ETH Zurich groups focusing on green chemistry. Scale-up routes used in industry draw on continuous-flow techniques pioneered at AstraZeneca research centers and pilot plants at Pfizer.

Applications and Uses

NA4 has been investigated as a crosslinking agent in polymer matrices evaluated by teams at Dow Chemical Company and as a precursor in functional materials studies at IBM Research. Photochemical properties have led to its testing in dye-sensitized systems studied alongside work from MIT Media Lab and Tesla-adjacent research on energy materials. In medicinal chemistry, NA4-type scaffolds appear in lead optimization campaigns reported by GlaxoSmithKline and Novartis for targets explored in collaborative programs with Institute Pasteur and Johns Hopkins University. Specialized applications also include surface modification protocols used in projects at National Renewable Energy Laboratory and sensor development reported by Siemens research groups.

Safety and Handling

Safety data sheets prepared following standards from Occupational Safety and Health Administration and European Chemicals Agency classify NA4 as an irritant with moderate acute toxicity; laboratory handling recommendations mirror those for analogous reagents used at Broad Institute and Rockefeller University. Standard precautions include use of engineering controls as practiced in Lawrence Livermore National Laboratory facilities, personal protective equipment endorsed by World Health Organization laboratory guidance, and spill response procedures similar to those for organic solvents in protocols from Centers for Disease Control and Prevention. Decontamination and disposal practices align with guidance from Environmental Protection Agency and institutional hazardous waste programs like those at University of Oxford.

Regulatory and Environmental Impact

Regulatory assessment of NA4 follows frameworks established by agencies such as European Chemicals Agency (REACH) and United States Environmental Protection Agency; environmental fate studies reference methodologies from United Nations Environment Programme and monitoring approaches employed by Agence France-Presse-funded projects. Biodegradation experiments use protocols developed at National Oceanic and Atmospheric Administration and ecotoxicity assays similar to those conducted by United Kingdom Environment Agency. Industry stakeholders including BASF and Dow Chemical Company factor NA4 into life-cycle analyses guided by standards from International Organization for Standardization and corporate sustainability programs at Unilever.

Category:Organic compounds