TCI B6354, 1-(4-Bromophenyl)-2-chloroethan-1-one (CAS 4209-02-3), is a bifunctional non-heterocyclic building block widely used in synthetic organic chemistry laboratories. Its reactive α-chloroketone moiety serves as a key electrophile in the construction of five-membered heterocycles such as thiazoles, imidazoles, and oxazoles, while the para-bromo substituent remains available for subsequent transition-metal-catalysed cross-coupling. This dual reactivity allows researchers to build molecular complexity in a controlled, stepwise manner, making it a practical starting material for medicinal chemistry and materials research. AMI Scientific supplies this TCI product in 5 g and 25 g pack sizes to suit both exploratory screening and routine synthetic work.
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