M5820 Sigma-Aldrich


≥98% (HPLC), powder

Synonym: 4-(Dimethylamino)-N-[7-(hydroxyamino)-7-oxoheptyl]-benzamide, MS 344, D237, N-Hydroxy-7-(4-dimethylaminobenzoyl)-aminoheptanamide

  • CAS Number 251456-60-7

  • Empirical Formula (Hill Notation) C16H25N3O3

  • Molecular Weight 307.39

  •  MDL number MFCD03453554

  •  PubChem Substance ID 329818022

  •  NACRES NA.77



Related Categories Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Bioactive Small Molecules for Epigenetic Research, Cell Biology, Cell Signaling and Neuroscience,
Quality Level   100
assay   ≥98% (HPLC)
form   powder
storage condition   protect from light
color   white to beige
solubility   DMSO: 10 mg/mL, clear
storage temp.   2-8°C
SMILES string   CN(C)c1ccc(cc1)C(=O)NCCCCCCC(=O)NO
InChI   1S/C16H25N3O3/c1-19(2)14-10-8-13(9-11-14)16(21)17-12-6-4-3-5-7-15(20)18-22/h8-11,22H,3-7,12H2,1-2H3,(H,17,21)(H,18,20)



1, 5 mg in glass bottle

Biochem/physiol Actions

M344 is a HDAC inhibitor; subtype selective for HDAC6 over HDAC1. M344 inhibits HDAC (IC50 = 100 nM) and also inhibits hyperacetylation of histone H4, terminal cell differentiation, transcription (γ-globin), and tumor cell death.

Features and Benefits

This compound is a featured product for Gene Regulation research. Click here to discover more featured Gene Regulation products. Learn more about bioactive small molecules for other areas of research at

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Discover Bioactive Small Molecules for Gene Regulation

The loss of regulation of gene expression is a key component to many human disease states, including neurodegenerative disorders, autoimmune conditions and, most prominently, cancers. Regulation of g...
Keywords: Acetylations, Epigenetics, Gene expression, Genomics, Methylations, PAGE, Post translational modifications, Transcription

Histone Modification and Chromatin Remodeling

Gene expression is governed by complex mechanisms including transcription factor binding to DNA and coordinated changes in chromatin structure. The primary protein components of chromatin are the his...
Savita Bagga, PhD.
BioFiles v7 n3, 2012, 10–16
Keywords: Acetylations, Amplification, Cancer, Cell culture, Chromatin immunoprecipitation, Cloning, DNA purification, Diseases, Epigenetics, Gene expression, Immunoprecipitation, Indicators, Methylations, Microarray Analysis, Polymerase chain reaction, Polymerase chain reaction - quantitative, Polymorphisms, Purification, Sequencing, Transcription, Whole genome amplification

Peer-Reviewed Papers


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