• USA Home
  • SML0846 - Anagrelide hydrochloride

SML0846 Sigma-Aldrich

Anagrelide hydrochloride

≥98% (HPLC)

Synonym: 6,7-Dichloro-1,5-dihydro-imidazo[2,1-b]quinazolin-2(3H)-one hydrochloride

  • CAS Number 58579-51-4

  • Empirical Formula (Hill Notation) C10H7Cl2N3O · HCl

  • Molecular Weight 292.55

  •  NACRES NA.77



Related Categories AN-AZ, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology, Cell Signaling and Neuroscience,
assay   ≥98% (HPLC)
form   powder
storage condition   desiccated
color   white to beige
solubility   DMSO: 1 mg/mL, clear (warmed)
storage temp.   2-8°C


General description

Download the CofA, SDS and IFU specific to your product lot and format
Fab fragments from polyclonal anti-fluorescein antibodies, conjugated to alkaline phosphatase.
After immunization with fluorescein, the sheep IgG was purified by ion exchange chromatography and the specific IgG was isolated by immunosorption. The Fab fragments obtained by papain digestion were purified by gel filtration, conjugated with alkaline phosphatase, and stabilized in 50 mM triethanolamine buffer, 3 M NaCl, 1 mM MgCl2, 0.1 mM ZnCl2, 1% bovine serum albumin (w/v), pH 7.6.
Clone: polyclonal
Ig class: sheep IgG, Fab fragments

Anagrelide belongs to the imidazo[2,1-b]quinazolin-2-one series of compounds.


10, 50 mg in glass bottle

Biochem/physiol Actions

Anagrelide is a phosphodiesterase inhibitor with antiplatelet activity (IC50 = 36 nM for inhibition of phosphodiesterase-III). Anagrelide inhibits the maturation of megakaryocytes into platelets, reducing both megakaryocyte hyperproliferation and differentiation. As a drug, anagrelide is antithrombocythemic used for the treatment of overproduction of blood platelets.

Anagrelide is a phosphodiesterase inhibitor with antiplatelet activity.

In human and animals, anagrelide has an inhibitory effect on platelet aggregation. Small doses of anagrelide can generate thrombocytopenia. Anagrelide is not advised during pregnancy. It is effectively used in the treatment of essential thrombocytosis.

Features and Benefits

This compound is a featured product for Cyclic Nucleotide research. Click here to discover more featured Cyclic Nucleotide products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.

This compound is featured on the Phosphodiesterases page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Target organs 
Respiratory system
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number
Protocols & Articles


Discover Bioactive Small Molecules for Cyclic Nucleotides

Transmission of an extracellular signal across the cell membrane is initiated by activation of many types of hormone and neurotransmitter receptors, such as G-protein coupled receptors (GPCRs), and c...
Keywords: Antivirals, Cancer, Cardiovascular, Cellular processes, Diabetes, Diseases, Hormones, Neurotransmitters


Cyclic nucleotide phosphodiesterases (PDEs) catalyze the hydrolysis of cAMP and/or cGMP. They function with adenylyl and guanylyl cyclases to regulate the amplitude and duration of responses triggere...
Keywords: Amplification, Atomic absorption spectroscopy, Catalysis, Diabetes, Gene expression, Genetic, Hormones, Inflammation, Neurotransmitters, Obesity, Parkinson Disease, Phosphorylations, Physiological Processes, Schizophrenia, Transduction

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?