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3-hydroxyphenacyl bromide; CAS No.: 2491-37-4; ChemShuttle provides 3-hydroxyphenacyl bromide as a photo-labile protecting group reagent. This compound undergoes efficient Norrish Type I cleavage upon UV irradiation ( =365 nm), making it valuable for controlled release applications. Our custom synthesis protocol ensures high purity (>99%) critical for photochemical quantum yield optimization. The phenolic hydroxyl group allows derivatization through esterification or etherification. We offer technical support on two-photon excitation conditions and provide custom formulation services for light-sensitive delivery systems. Batch analysis includes UV-Vis spectral data and dark stability testing under accelerated conditions.