EHNA, Hydrochloride-CAS 51350-19-7-Calbiochem

C₁₄H₂₃N₅O · xHCl

277.37 (free base basis)

NA.77

The racemic mixture of a cell-permeable adenine derivative that acts as a PDE II-selective phosphodiesterase inhibitor (IC50 = 0.8 and 2 µM against human and procine PDE II, respectively) and adenosine deaminase (K_i = 4 nM), while exhibiting little or much reduced potency toward PDE I/II/IV isozymes (IC50 >100 µM) of both human and porcine species. EHNA at 10 µM concentration is also reported to effectively and reversibly block the differentiation and maintain the pluripotency of hES (human embryonic stem) cell line SA121 in feeder-free cultures without exogenously added FGF for up to 30 passages in a manner independent of its known ADA and PDE inhibitory activities.

Cell permeable: yes
Primary Target
PDE 2
Target K_i: 4 nM against adenosine deaminase
Product does not compete with ATP.
Reversible: no
Target IC₅₀: 0.8 and 2 µM against human and procine PDE II, respectively

Toxicity: Standard Handling (A)

Burton, P., et al. 2010. Biochem. J.in press.
Lorbar, M., et al. 1999. J. Mol. Cell. Cardiol.31, 401.
Verde, I., et al. 1999. Br. J. Pharmacol.127, 65.
Reynolds, A.J., et al. 1996. Brain Res.798, 67.
Mery, P.F., et al. 1995. Mol. Pharmacol.48, 121.
Podzuweit, T., et al. 1995. Cell. Signal.7, 733.
Bessodes, M., et al. 1982. Biochem. Pharmacol.31, 879.
Bouchard, P., et al. 1981. Proc. Natl. Acad. Sci. USA78, 1033.

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

100

≥97% (HPLC)

solid

Calbiochem^®

OK to freeze
desiccated (hygroscopic)

white

water: 25 mg/mL

ambient

2-8℃

1S/C14H23N5O/c1-3-4-5-6-7-11(10(2)20)19-9-18-12-13(15)16-8-17-14(12)19/h8-11,20H,3-7H2,1-2H3,(H2,15,16,17)/t10-,11-/m0/s1

IOSAAWHGJUZBOG-QWRGUYRKSA-N

10 mg in Plastic ampoule

11 - Combustible Solids

WGK 1