5'-Guanidinonaltrindole hydrochloride_product_DataBase

Bioactivity	5'-Guanidinonaltrindole (5'-GNTI) hydrochloride is a highly selective and potent κ-opioid receptor antagonist with a Ki of 0.18 nM for human κ-opioid receptor[1].
Invitro	5'-Guanidinonaltrindole (5'-GNTI) also binds to human μ- and δ-opioid receptors with Kis of 36.9±2.3 nM and 70.0±0.3 nM, respectively[1].5'-Guanidinonaltrindole is most effective at κ-opioid receptors (pA2=10.4±0.10), with substantially lower antagonist potency at μ-opioid (pA2=8.49±0.09) and δ-opioid receptors (pA2=7.81±0.06)[1].
In Vivo	5'-Guanidinonaltrindole (5'-GNTI) (0.03-3 mg/kg; s.c.; once) induces scratching in mice[2]. Animal Model:
Name	5'-Guanidinonaltrindole hydrochloride
CAS	351183-88-5
Formula	C27H31Cl2N5O3
Molar Mass	544.47
Appearance	Solid
Transport	Room temperature in continental US; may vary elsewhere.
Storage	-20°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Reference	[1]. Jones R M, et al. 5′-Guanidinonaltrindole, a highly selective and potent κ-opioid receptor antagonist. European journal of pharmacology, 2000, 396(1): 49-52. [2]. Cowan A, et al. Itching-like behavior: A common effect of the kappa opioid receptor antagonist 5′-guanidinonaltrindole and the biased kappa opioid receptor agonist 6′-guanidinonaltrindole in mice. Medicine in Drug Discovery, 2021, 11: 100097.

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