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Anagrelide HCl | PDE3 inhibitor

Anagrelide HCl (58579-51-4) is a potent and selective phosphodiesterase (PDE3) inhibitor, IC50=36 nM).1 Inhibits platelet production by disrupting megakaryocyte maturation2 via a mechanism which is independent of PDE3 inhibition3. Clinically useful agent for conditions requiring platelet lowering therapy.4,5


1) Gilespie et al. (1988), Anagrelide: a potent and selective inhibitor of platelet cyclic AMP phosphodiesterase enzyme activity; Biochem. Pharmacol. 37 2866
2) Mazur et al. (1992), Analysis of the mechanism of anagrelide-induced thrombocytopenia in humans; Blood, 79 1931
3) Wang et al. (2005), Comparison of the biological activities of anagrelide and its major metabolites in haematopoietic cell cultures; Br. J. Pharmacol., 146 324
4) Barbui et al. (2012), Front-line therapy in polycythemia vera and essential thrombocythemia; Blood Rev., 26 205
5) Chen et al. (2012), Platelet-lowering therapy with anagrelide as an adjuvant therapy for treatment of primary pulmonary neoplasm-associated extreme thrombocytosis; Jpn. J. Clin. Oncol., 42 761

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Catalog#  10-1220-0010

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Catalog Number:
PDE3 inhibitor
Chemical Name:
6,7-dichloro-1,5-dihydroimidazo[2,1 –b]quinazolin-2(3H)-one hydrochloride
Alternate Names:
Molecular Weight:
Molecular Formula:
C10H7Cl2N3O • HCl
Soluble in DMSO (up to 2.5 mg/ml)
Physical Properties:
White solid
98% by HPLC
NMR (Conforms)
Storage Temperature:
-20°C (des.)
Stable for 1 year as supplied. Solutions in DMSO may be stored at -20°C for up to 3 months.
Shipping Code:
Materials provided by Focus Biomolecules are for laboratory research use only and are not intended for human or veterinary applications.

Focus BiomoleculesPlymouth Meeting, PA USA1-855-FOCUS21

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