KW-2478 (KW 2478; KW2478) is a nonansamycin inhibitor of HSP90 (Heat Shock Protein 90) with potential antitumor activity.

Tanespimycin (formerly NSC-330507; CP-127374; 17-AAG, BAY-579352, KOS-953, 17-AAG, CP-127374), a benzoquinone analog and a derivative of the antibiotic geldanamycin, is an orally bioavailable and small-molecule inhibitor of heat shock protein 90/HSP90 with potential antitumor activity.

NVP-BEP800 (VER-82576; NVP BEP-800; BEP-800) is a novel, potent, fully synthetic, orally bioavailable heat shock protein 90β (HSP90β) inhibitor with potential antitumor activity.

Elesclomol (STA4783; STA-4783; STA4783) is a bis(thio-hydrazide amide)-based heat shock protein 70/HSP70 inducer as well as an oxidative stress inducer with potential antitumor and pro-apoptotic activity.

Ganetespib (formerly STA-9090; STA 9090; STA9090), the active metabolite of STA-1474 (a prodrug of ganetespib), is a potent and triazolone-based small-molecule HSP90 (heat shock protein 90) inhibitor with potential anticancer activity.

NMS-E973 (NMSE973; NMSE 973) is a novel, potent and selective HSP90 (Heat Shock Protein 90) inhibitor with potential antitumor activity.

Onalespib (formerly AT13387; AT-13387; AT 13387) is a novel, orally bioavailable, long-acting and isoindole-based small-molecule HSP90 (heat shock protein 90) inhibitor with potential antitumor activity.

Luminespib (also known as NVP AUY922; NVP AUY-922; AUY922; AUY-922; VER52296; VER-52296), a 4,5-diarylisoxazole derivative, is a 3rd generation HSP90 (heat shock protein 90) inhibitor with potential anticancer activity.

Geldanamycin (U-29135; NSC-122750; NSC122750; U 29135) is a natural occurring, benzoquinone-based ,19-membered macrocyle ansamycin class of anticancer antibiotic.

VER-50589 (VER 50589; VER50589) is a highly potent and selective HSP90 (Heat Shock Protein 90) inhibitor with potential antineoplastic activity.