Shelf life (days): 730.0
Formulation: A crystalline solid
Formal Name: 1-(3-ethyl-5-methoxy-2(3H)-benzothiazolylidene)-2-propanone
Purity: ≥95%
Formula Markup: C13H15NO2S
Formula Weight: 249.3
CAS Number: 300801-52-9
Notes: Cdc2-like kinase (Clk), among a number of other kinases, phosphorylates serine/arginine-rich proteins which play a role in alternative splicing of pre-mRNA. The Clk family consists of four members, which include Clk1/Sty and Clk2-4. TG003 is a novel benzothiazole compound that demonstrates potent inhibition of Clk1/Sty and Clk4 with IC50 values of 20 and 15 nM, respectively.{19742} TG003 exhibits considerably weaker inhibition of Clk2 and Clk3 (IC50 = 200 nM and >10 μM, respectively).{19742} Through suppression of Clk-mediated phosphorylation, TG003 inhibits SF2/ASF-dependent splicing of β-globin pre-mRNA at 1 μM in vitro.{19742} At 10 μM, TG003 rescues the embryonic defects induced by excessive Clk activity in Xenopus.{19742}
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