Thiazole Orange

• CAT Number: M008225
• CAS Number: 107091-89-4
• Molecular Formula: C26H24N2O3S2
• Molecular Weight: 476.61
• Purity: ≥95%
• Synonyms: 4-methylbenzenesulfonate;(2Z)-3-methyl-2-[(1-methylquinolin-1-ium-4-yl)methylidene]-1,3-benzothiazole
• InChI: InChI=1S/C19H17N2S.C7H8O3S/c1-20-12-11-14(15-7-3-4-8-16(15)20)13-19-21(2)17-9-5-6-10-18(17)22-19;1-6-2-4-7(5-3-6)11(8,9)10/h3-13H,1-2H3;2-5H,1H3,(H,8,9,10)/q+1;/p-1
• InChIKey: ACOJCCLIDPZYJC-UHFFFAOYSA-M
• SMILES: CC1=CC=C(C=C1)S(=O)(=O)[O-].CN1C2=CC=CC=C2SC1=CC3=CC=[N+](C4=CC=CC=C34)C

Thiazole Orange is an asymmetric anthocyanin dye that can be coupled with oligonucleotides (ONs) to prepare fluorescent hybridization probes. Thiazole Orange can be used for reticulocyte analysis. λEx/λEm (including DNA) of Thiazole Orange =510/527 nm[1][2][3].

Reference

[1]. Linda G. Le, et al. Thiazole Orange: A New Dye for Reticulocyte Analysis. cytometry 7:508-517 (1986)

[2]. Piotr Klimkowski, et al. Design of thiazole orange oligonucleotide probes for detection of DNA and RNA by fluorescence and duplex melting. Org Biomol Chem. 2019 Jun 28; 17(24): 5943–5950.
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[3]. O’Neil CS, et al. DNA Electrophoresis Using Thiazole Orange Instead of Ethidium Bromide or Alternative Dyes. J Vis Exp. 2019 Mar 31;(145)
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