HPOB --- HDAC6 Inhibitor

Catalog No. size PriceQuantity
M60231-2S 2 mg solid $79
M60231-10S 10 mg solid $320


HPOB is a potent and selective HDAC6 inhibitor with IC50 of 56 nM. It has >30-fold selectivity over other HDACs. It causes growth inhibition of normal and transformed cells but does not induce cell death. It enhances the effectiveness of DNA-damaging anticancer drugs in transformed cells but not normal cells. HPOB does not block the ubiquitin-binding activity of HDAC6. In mice bearing CWR22 human prostate cancer xenografts, when in combination with SAHA, HPOB causes suppression of the growth of established tumors, while produces no significant suppression when used alone.

Product information

CAS Number: 1429651-50-2

Molecular Weight: 314.34

Formula: C17H18N2O4

Chemical Name: N-hydroxy-4-(2-((2-hydroxyethyl)(phenyl)amino)-2-oxoethyl)benzamide

Smiles: OCCN(C(=O)CC1C=CC(=CC=1)C(=O)NO)C1C=CC=CC=1


InChi: InChI=1S/C17H18N2O4/c20-11-10-19(15-4-2-1-3-5-15)16(21)12-13-6-8-14(9-7-13)17(22)18-23/h1-9,20,23H,10-12H2,(H,18,22)

Technical Data

Appearance: Solid Power.

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO up to 100 mM

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

HPOB was used at 10-30 µM final concentration in various in vitro assays.

In Vivo:

HPOB was dosed to mice bearing CWR22 human prostate cancer xenografts at 300 mg/kg once per day by IP injection.


  1. Lee JH, et al. Development of a histone deacetylase 6 inhibitor and its biological effects. (2013) Proc Natl Acad Sci USA. 110(39):15704-9.

Products are for research use only. Not for human use.


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