(S)-1-(6-Chloropyridin-3-yl)ethanamine is a chiral amine derivative featuring a 6-chloropyridin-3-yl substituent. It is a key chiral intermediate in the synthesis of modern neonicotinoid insecticides. This compound serves as a crucial building block for the preparation of the active enantiomer of certain advanced neonicotinoids, which exhibit enhanced insecticidal activity and potentially improved selectivity. Its primary and well-defined industrial application is in the agrochemical sector. It is specifically utilized in the production of chiral neonicotinoid insecticides, such as those targeting the nicotinic acetylcholine receptors (nAChRs) in insects. The (S)-enantiomer is often the biologically active form, making this intermediate essential for manufacturing enantiomerically pure or enriched products with optimal efficacy. As a functionalized pyridylalkylamine, it also finds use as a specialized synthetic building block in organic chemistry research, particularly for constructing molecules containing chiral amine motifs adjacent to heteroaromatic systems.