| Cas No.: | 1147-56-4 | 
| Chemical Name: | 1-[2-Thiazolylazo]-2-naphthol | 
| Synonyms: | NSC139021 | 
| SMILES: | S1C=CN=C1/N=N/C1C2C(=CC=CC=2)C=CC=1O | 
| Formula: | C13H9N3Os | 
| M.Wt: | 255.295 | 
| Purity: | >98% | 
| Sotrage: | 2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO | 
| Description: | ERGi-USU (NSC139021) is a small molecule that selectively inhibits ERG-positive cancer cell growth (VCaP cell IC50=0.169 uM), directly binds the ribosomal biogenesis regulator atypical kinase RIOK2 and induces ribosomal stress signature; shows additive effects in inhibiting growth of VCaP cells combined with enzalutamide, inhibits growth of ERG-positive VCaP tumor xenografts with no apparent toxicity. | 

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