Thiazole Orange

Dye content ~90 %

1-Methyl-4-[(3-methyl-2(3H)-benzothiazolylidene)methyl]quinolinium p-tosylate
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.



Quality Level


Dye content, ~90%


hematology: suitable
histology: suitable


270 °C (dec.) (lit.)


512 nm

Featured Industry

Diagnostic Assay Manufacturing

storage temp.

room temp

SMILES string




InChI key


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General description

Thiazole Orange can be tethered with peptide nucleic acid for the detection of target nucleic acid in homogeneous solution. It is a dye with, both predicted physical characteristics and the biological staining characteristics of a good reticulocyte dye, hence it is considered as a dye for reticulocyte analysis. It has massive fluorescence enhancement and high quantum yield upon binding to nucleic acids, particularly RNA. It is non precipitating and can permeates through live cell membranes.


Thiazole orange has been used for the staining and thereby quantification of reticulocytes.


1 g in glass bottle
250 mg in glass bottle


Exclamation mark

Signal Word


Hazard Statements

Precautionary Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Adam D Cawte et al.
Nature communications, 11(1), 1283-1283 (2020-03-11)
RNA molecules play vital roles in many cellular processes. Visualising their dynamics in live cells at single-molecule resolution is essential to elucidate their role in RNA metabolism. RNA aptamers, such as Spinach and Mango, have recently emerged as a powerful...
Danitza Nébor et al.
Scientific reports, 8(1), 12793-12793 (2018-08-26)
Anemic Nan mice carry a mutation (E339D) in the second zinc finger of erythroid transcription factor KLF1. Nan-KLF1 fails to bind a subset of normal KLF1 targets and ectopically binds a large set of genes not normally engaged by KLF1...
Light-up probes: thiazole orange-conjugated peptide nucleic acid for detection of target nucleic acid in homogeneous solution.
Svanvik N
Analytical Biochemistry, 281(1), 26-35 (2000)
Eeman Khorramian et al.
Shock (Augusta, Ga.), 48(4), 490-497 (2017-04-30)
Intensive care unit (ICU) anemia is an extreme version of anemia of inflammation that occurs commonly in critically ill patients and is associated with increased morbidity and mortality. Currently available therapies for ICU anemia have shown inconsistent efficacies in clinical...
Costimulation blockade, busulfan, and bone marrow promote titratable macrochimerism, induce transplantation tolerance, and correct genetic hemoglobinopathies with minimal myelosuppression.
Adams AB
Journal of Immunology, 167(2), 1103-1111 (2001)

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