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Thiamet G

Catalog No.
O-GlcNAcase inhibitor, potent and selective
Grouped product items
SizePriceStock Qty
10mM (in 1mL DMSO)
In stock
In stock
In stock

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Thiamet G is a potent and selective inhibitor of O-GlcNAcase with Ki value of 21 nM [1].

O-GlcNAcase is an enzyme that removes GlcNAc from proteins. O-GlcNAcylation refers to the posttranslational modification of O-linkage of N-acetyl-glucosamine moieties to threonine and serine residues on proteins [2].

Thiamet G is a potent and selective O-GlcNAcase inhibitor. In kinetic assays, thiamet G competitively inhibited human O-GlcNAcase with Ki value of 21 nM. Thiamet G was extremely stable in aqueous solution. In nerve growth factor (NGF)-differentiated PC-12 cells, thiamet G significantly increased cellular O-GlcNAc levels with EC50 value of 30 nM in a dose dependent way. Thiamet G significantly reduced phosphorylation levels at Ser396 and Thr231 of Tau by 2.1-fold and 2.7-fold, respectively. Also, thiamet G decreased the phosphorylation levels at Ser422 and Ser262 [1]. Thiamet G significantly sensitized human leukemia cell lines to paclitaxel, a microtubule-stabilizing agent [2].

In rats, thiamet G could readily cross the blood brain barrier and dose-dependently increased brain O-GlcNAc levels. Thiamet G reduced tau phosphorylation at Ser396, Thr231 and Ser422 by 2.7, 3.1 and 1.8-fold, respectively [1].

[1].  Yuzwa SA, Macauley MS, Heinonen JE, et al. A potent mechanism-inspired O-GlcNAcase inhibitor that blocks phosphorylation of tau in vivo. Nat Chem Biol, 2008, 4(8): 483-490.
[2].  Ding N, Ping L, Shi Y, et al. Thiamet-G-mediated inhibition of O-GlcNAcase sensitizes human leukemia cells to microtubule-stabilizing agent paclitaxel. Biochem Biophys Res Commun, 2014, 453(3): 392-397.

Product Citation

Chemical Properties

Physical AppearanceA solid
StorageStore at -20°C
Cas No.1009816-48-1
Solubility≥100 mg/mL in H2O; ≥12.4 mg/mL in DMSO; ≥2.64 mg/mL in EtOH with gentle warming and ultrasonic
Chemical Name2-(ethylamino)-5-(hydroxymethyl)-5,6,7,7a-tetrahydro-3aH-pyrano[3,2-d][1,3]thiazole-6,7-diol
SDFDownload SDF
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.


Cell experiment [1,2]:

Cell lines

PC-12 cells, mesangial cells

Preparation method

The solubility of this compound in DMSO is > 12.4 mg/mL. General tips for obtaining a higher concentration: Please warm the tube at 37 ℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months.

Reacting condition

1 nM to 250 mM, 24 h


Thiamet-G decreased phosphorylation of tau in PC-12 cells at pathologically relevant sites including Thr231 and Ser396. In PC-12 cells, treatment with thiamet-G for 24 h with concentrations ranging from 1 nM to 250 mM dose-dependently increased cellular O-GlcNAc levels. Thiamet G (12.5 nM and 25 nM) significantly enhanced p38 phosphorylation by increasing O-GlcNAcylation in mesangial cells.

Animal experiment [1,3]:

Animal models

Male Sprague-Dawley rats, C57/bl mice

Dosage form

Intravenous injection, 50 mg/kg


In rats, thiamet G (50 mg/kg, i.v.) crossed the blood brain barrier and then resulted in increase in brain O-GlcNAc levels in a dose- and time-dependent manner, and reduction of tau phosphorylation in the CA1 region of the hippocampus. O-GlcNAc accumulation induced by thiamet G stimulated chondrogenic differentiation in C57/bl mice by increasing the gene expression of differentiation markers, as well as the activity of MMP-2 and -9.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1]. Yuzwa S A, Macauley M S, Heinonen J E, et al. A potent mechanism-inspired O-GlcNAcase inhibitor that blocks phosphorylation of tau in vivo[J]. Nature chemical biology, 2008, 4(8): 483-490.

[2]. Goldberg H, Whiteside C, Fantus I G. O-linked β-N-acetylglucosamine supports p38 MAPK activation by high glucose in glomerular mesangial cells[J]. American Journal of Physiology-Endocrinology and Metabolism, 2011, 301(4): E713-E726.

[3].Andrés-Bergós J, Tardio L, Larranaga-Vera A, et al. The increase in O-linked N-acetylglucosamine protein modification stimulates chondrogenic differentiation both in vitro and in vivo[J]. Journal of Biological Chemistry, 2012, 287(40): 33615-33628.

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