TCI C1176 2-Cyano-6-methoxybenzothiazole (CAS 943-03-3) is a heterocyclic building block that combines a benzothiazole core with a reactive 2-cyano group and a 6-methoxy substituent. It is best known as a key precursor in luciferin chemistry and as a partner for metal-free bioconjugation with 1,2-aminothiol motifs such as N-terminal cysteine. These properties make it valuable for molecular imaging probes, reporter design, and general heterocyclic synthesis. Supplied in a 1 g pack, it should be handled in a fume hood and stored in a cool, dry, light-protected place.
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