TCI B6657, 2-Bromo-5-methoxybenzaldehyde (CAS 7507-86-0), is a versatile trisubstituted benzaldehyde bearing an aldehyde group, an aromatic bromide, and a methoxy substituent on the same ring. The aldehyde supports condensation, reduction, oxidation, and reductive amination chemistry, while the C–Br bond serves as a reliable handle for transition metal catalyzed cross-coupling. These complementary handles make it a practical starting point for medicinal chemistry libraries and heterocycle construction. AMI Scientific offers this TCI building block in 5 g and 25 g pack sizes for both method optimization and routine synthesis.
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