NMS-E973

• CAT Number: R067117
• CAS Number: 1253584-84-7
• Molecular Formula: C22H22N4O7
• Molecular Weight: 454.43
• Purity: ≥95%
• Synonyms: 5-[2,4-dihydroxy-6-(4-nitrophenoxy)phenyl]-N-(1-methylpiperidin-4-yl)-1,2-oxazole-3-carboxamide
• InChI: InChI=1S/C22H22N4O7/c1-25-8-6-13(7-9-25)23-22(29)17-12-20(33-24-17)21-18(28)10-15(27)11-19(21)32-16-4-2-14(3-5-16)26(30)31/h2-5,10-13,27-28H,6-9H2,1H3,(H,23,29)
• InChIKey: YLQODGGPIHWTHR-UHFFFAOYSA-N
• SMILES: CN1CCC(CC1)NC(=O)C2=NOC(=C2)C3=C(C=C(C=C3OC4=CC=C(C=C4)[N+](=O)[O-])O)O

NMS-E973 is a potent and selective inhibitor of HSP90. NMS-E973 binds to the ATP binding site of Hsp90α with a DC50 of <10 nM. NMS-E973 is able to cross the blood-brain barrier (BBB). Antitumor efficacy[1].
NMS-E973 inhibits cancer cell proliferation. NMS-E973 shows a widespread antiproliferative activity, with an average IC50 of 1.6 μM and 15 cell lines with an IC50 <100 nM[1].
NMS-E973 (60 mg/kg; i.v.) inhibits the growth of A375 tumors subcutaneously or intracranially implanted in mice[1].
NMS-E973 exhibits moderate elimination half-lives (5.55±1.07 h) due to high plasma clearance (39.9±1.70 mL/min/kg) combined with large volumes of distribution (5.83±3.18 L/kg) following intravenous administration (10 mg/kg) in mice[1].

Reference

[1]. Gianpaolo Fogliatto, et al. NMS-E973, a novel synthetic inhibitor of Hsp90 with activity against multiple models of drug resistance to targeted agents, including intracranial metastases. Clin Cancer Res. 2013 Jul 1;19(13):3520-32.
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