TCI C1475 5-Chloro-2-methylbenzothiazole is a substituted benzothiazole building block carrying a methyl group at the 2-position and a chlorine on the benzene ring. The 2-methyl group is acidic enough to be deprotonated and condensed with aldehydes, a route commonly used to prepare cyanine dyes and fluorescent probes. The aromatic chlorine offers an additional handle for transition metal catalysed cross-coupling reactions. AMI Scientific supplies the compound in original TCI packaging in a 25 g pack, and it should be stored in a cool, dry, and light-protected place with the container tightly closed.
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