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Merck
CN

SML1696

Sigma-Aldrich

HPB

≥98% (HPLC)

Synonym(s):

N-Hydroxy-4-((N-(2-hydroxyethyl)-2-phenylacetamido)methyl)benzamide

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About This Item

Empirical Formula (Hill Notation):
C18H20N2O4
CAS Number:
Molecular Weight:
328.36
UNSPSC Code:
12352202
PubChem Substance ID:
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Assay

≥98% (HPLC)

form

powder

storage condition

protect from light

color

white to light brown

solubility

DMSO: 5 mg/mL, clear (warmed)

storage temp.

2-8°C

SMILES string

O=C(N(CCO)CC1=CC=C(C(NO)=O)C=C1)CC2=CC=CC=C2

Biochem/physiol Actions

HPB is a cell-permeable, non-cytotoxic N-hydroxybenzamide derivative that acts as a HDAC6-selective deacetylase inhibitor (IC50 = 31/376/677/842/1133 nM against HDAC6/8/10/1/7, >2 μM against HDAC2/3/4/11/9/5). HPB treatment results in reduced growth, but not viability (up to 64 μM and 72 hrs), of LNCaP prostate cancer cells and non-cancer human foreskin fibroblasts (IC50 = 8 and 16-32 μM, respectively), causing upregulated acetylation levels of alpha-tubulin and peroxiredoxin, but not histones, both in cultures and in mice in vivo. Intraperitoneal injection is efficacious in suppressing the expansion of prostate cancer CWR22 xenograft-derived tumors in mice (by 73% in 4 wks; Five daily 300 mg/kg i.p. dosings a week) without detectable weight loss.
HPB is a cell-permeable, non-cytotoxic N-hydroxybenzamide derivative that acts as a HDAC6-selective deacetylase inhibitor.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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