HEAT hydrochloride_product_DataBase

Bioactivity	HEAT (BE2254) hydrochloride is a selective alpha 1 adrenergic receptor antagonist. HEAT hydrochloride, a phenethylamine derivative, shows pKis of 9, 9.1, and 8.57 for alpha 1a, alpha 1b and alpha 1c, respectively[1][2].
Invitro	BE2254 inhibits (-)-noradrenaline-mediated increases in gluconeogenesis with K,sub>B of 0.74 nM[2].The alpha-1 selective antagonist [125I]BE2254 is used to specifically label a single class of binding sites with a dissociation constant of 131.0 pM and a maximal binding capacity of 17.6 fmol/mg of protein. Catecholamines compete for [125I]BE2254 binding stereospecifically and with the characteristic alpha adrenergic potency series of (-)-epinephrine greater than (-)-norepinephrine much greater than (-)-isoproterenol. The alpha-1 selective antagonist prazosin (Kd=2.4 nM) is much more potent in competing for [125I]BE2254 binding than is the alpha-2 selective antagonist yohimbine (Kd=2900 nM)[3].
Name	HEAT hydrochloride
CAS	30007-39-7
Formula	C19H22ClNO2
Molar Mass	331.84
Transport	Room temperature in continental US; may vary elsewhere.
Storage	Please store the product under the recommended conditions in the Certificate of Analysis.
Reference	[1]. Chiu G, et al. Design and synthesis of an alpha1a-adrenergic receptor subtype-selective antagonist from BE2254. Chem Biol Drug Des. 2006;67(6):437-439. [2]. McPherson GA, et al. A study of alpha 1-adrenoceptors in rat renal cortex: comparison of [3H]-prazosin binding with the alpha 1-adrenoceptor modulating gluconeogenesis under physiological conditions. Br J Pharmacol. 1982;77(1):177-184. [3]. Tsujimoto G, et al. Alpha adrenergic receptors in the rabbit bladder base smooth muscle: alpha-1 adrenergic receptors mediate contractile responses. J Pharmacol Exp Ther. 1986;236(2):384-389.

PeptideDB

HEAT hydrochloride

CAS: 30007-39-7 F: C19H22ClNO2 W: 331.84