2-Acetyl-5-tetrahydroxybutyl imidazole (THI)

Catalog No.:  B-0031
MW: 230.2
Purity: 95%
CAS: 94944-70-4

Description:  THI is a trace component present in the industrially produced food colorant caramel color III. It acts as an immunosuppressant by inhibiting the enzyme sphingosine 1-phosphate lyase (S1PL) which fragments S1P to hexadecenal and phosphoethanolamine. Administration of THI in drinking water to mice (50 μg/mL) resulted in decreased S1PL activity, increased S1P levels in lymphoid tissues and reduced egress of CD4+ and CD8+ T cells (lymphopenia).

1) J. T. Bagdanoff, et al. "Inhibition of Sphingosine-1-phosphate Lyase for the Treatment of Autoimmune Disorders." J. Med. Chem. 2009, 52, 3941-3953.
2) G.F. Houben, et al. "Effects of Ammonia Caramel and Tetrahydroxybutylimidazole on the Immune System of Rats." Arch. Toxicol., 1989, 13, 183-187.
3) S.R. Schwab, et al. “Lymphocyte Sequestration Through S1P Lyase Inhibition and Disruption of S1P Gradients.” Science 2005, 309, 1735-1739.


  • -20°C

Options/Sizes Pricing
B-0031-1mg $ 104.00
B-0031-5mg $ 446.00
B-0031-10mg $ 809.00
Additional Information:
Tech Data Sheet - B-0031

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