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Naloxone benzoylhydrazone

CAS# 119630-94-3

Naloxone benzoylhydrazone

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Chemical structure

Naloxone benzoylhydrazone

3D structure

Chemical Properties of Naloxone benzoylhydrazone

Cas No. 119630-94-3 SDF Download SDF
PubChem ID 9576771 Appearance Powder
Formula C26H27N3O4 M.Wt 445.52
Type of Compound N/A Storage Desiccate at -20°C
Synonyms NalBzOH
Solubility Soluble to 50 mM in DMSO
Chemical Name N-[(E)-[(4R,7aS)-4a,9-dihydroxy-3-prop-2-enyl-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-7-ylidene]amino]benzamide
SMILES C=CCN1CCC23C4C(=NNC(=O)C5=CC=CC=C5)CCC2(C1CC6=C3C(=C(C=C6)O)O4)O
Standard InChIKey AKXCFAYOTIEFOH-XNRFFRJZSA-N
Standard InChI InChI=1S/C26H27N3O4/c1-2-13-29-14-12-25-21-17-8-9-19(30)22(21)33-23(25)18(10-11-26(25,32)20(29)15-17)27-28-24(31)16-6-4-3-5-7-16/h2-9,20,23,30,32H,1,10-15H2,(H,28,31)/b27-18+/t20-,23-,25?,26?/m1/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Naloxone benzoylhydrazone

DescriptionMixed opioid receptor agonist/antagonist. Acts as a potent and full agonist at κ, a partial agonist at μ and δ opioid receptors (pEC50 values are 9.45, 8.74 and 8.61 in a cAMP assay, 9.70, 8.59 and 8.49 in a [35S]GTPγS binding assay respectively). Fails to exert agonist effects at NOP receptors and antagonizes agonist-induced NOP activation. Stimulates κ-, μ- and δ-mediated analgesia and blocks NOP-induced supraspinal nociception.

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Preparing Stock Solutions of Naloxone benzoylhydrazone

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.2446 mL 11.2228 mL 22.4457 mL 44.8914 mL 56.1142 mL
5 mM 0.4489 mL 2.2446 mL 4.4891 mL 8.9783 mL 11.2228 mL
10 mM 0.2245 mL 1.1223 mL 2.2446 mL 4.4891 mL 5.6114 mL
50 mM 0.0449 mL 0.2245 mL 0.4489 mL 0.8978 mL 1.1223 mL
100 mM 0.0224 mL 0.1122 mL 0.2245 mL 0.4489 mL 0.5611 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on Naloxone benzoylhydrazone

Effects of naloxone benzoylhydrazone on native and recombinant nociceptin/orphanin FQ receptors.[Pubmed:12056546]

Can J Physiol Pharmacol. 2002 May;80(5):407-12.

We have studied the effects of Naloxone benzoylhydrazone (NalBzoH) at recombinant human OP4 receptors expressed in Chinese hamster ovary (CHO) cells (CHOhOP4) and native OP4 sites in isolated tissues from various species. In CHOhOP4 membranes, nociceptin (NC) and NalBzoH displaced [125I]Tyr14-NC with pKi values of 10.1 and 7.3. In the presence of 100 microM GDP, NC stimulated GTPgamma35S binding (pEC50 = 8.5). NalBzoH was ineffective but antagonized the effects of NC (pA2 = 6.9). At 5 microM GDP, there was an increase in potency (pEC50 = 9.3) and efficacy (4.3-fold) of NC. NalBzOH was a partial agonist (pEC50 = 7.0, Emax = 13% relative to NC). In CHOhOP4 cells, NC and NalBzoH inhibited cAMP formation with pEC50 and Emax values of 9.8 and 100% and 6.0 and 44%, respectively. In the rat vas deferens, NalBzoH (10 microM) did not modify electrically induced twitches but competitively antagonized the inhibitory action of NC (pA2 = 6.2). In the mouse vas deferens (mVD) and guinea pig ileum (gpI), NalBzoH inhibited twitches with pEC50 and Emax values of 7.6 and 78% and 8.5 and 77%, respectively. The effect of 3 microM NalBzoH was fully inhibited by 3 microM naloxone in mVD and 30 microM in gpI. Under these conditions, NalBzoH antagonized the actions of NC in both preparations with pA2 values of 6.3 and 6.8, respectively. Collectively, these data demonstrate that NalBzoH is a nonselective OP4 ligand with system-dependent behaviour.

Autoradiography in opioid triple knockout mice reveals opioid and opioid receptor like binding of naloxone benzoylhydrazone.[Pubmed:15695161]

Neuropharmacology. 2005 Feb;48(2):228-35.

Naloxone benzoylhydrazone (NalBzoH) is a ligand used to study opioid receptors. It has been suggested to act at a novel kappa3 receptor but also appears to bind to classical opioid receptors, and possibly the ORL1 receptor. We have used opioid receptor triple knockout mice, deficient in genes coding for the mu, delta and kappa-receptor, to characterise the relative contributions of opioid and ORL1 activity to the binding of this ligand, by carrying out receptor autoradiography with [3H]NalBzoH. As competing ligands we have used diprenorphine and nociceptin at 1 microM, alone or in combination, to determine the contribution of opioid and ORL1 receptor binding. At 4 nM [3H]NalBzoH showed labelling in wild-type brains indicative of broad spectrum classical opioid receptor binding. In the triple knockout brains all labelling was completely absent, suggesting that at this concentration there is no binding to ORL1 sites. However at 50 nM [3H]NalBzoH showed labelling in triple knockout brains with a distribution pattern indicative of ORL1 labelling. Quantitative analysis showed that nociceptin displaced typically 30% of the residual labelling in knockout brains whilst diprenorphine had relatively little effect. The data show that at 50 nM NalBzoH no binding was detected other than to classical opioid receptors or to ORL1 in an approximate ratio of 2:1.

G protein activation and cyclic AMP modulation by naloxone benzoylhydrazone in distinct layers of rat olfactory bulb.[Pubmed:15451772]

Br J Pharmacol. 2004 Nov;143(5):638-48.

1 Naloxone benzoylhydrazone (NalBzoH) has initially been developed as an agonist of the pharmacologically defined kappa3-opioid receptor and has recently been employed as an antagonist at the opioid receptor-like (ORL1) receptor. In the present study, we investigated the ability of NalBzoH to elicit agonist-like effects on receptor signalling in distinct layers of rat olfactory bulb, a brain region where we have demonstrated the presence of opioid and ORL1 receptors coupled to both stimulation and inhibition of cyclic AMP formation. 2 In membranes of the olfactory nerve-glomerular layer (ON-GL), external plexiform layer (EPL) and granule cell layer (GRL), NalBzoH elicited a concentration-dependent stimulation of guanosine-5'-O-(3-[35S]-thio)triphosphate ([35S]GTPgammaS) binding with pEC50 values ranging from 7.36 to 7.86, whereas the kappa1-opioid receptor agonists (-)-U-50,488 and U-69,593 were inactive. 3 In membranes of GRL, but not ON-GL and EPL, NalBzoH stimulated basal adenylyl cyclase activity by 40% with a pEC50 of 8.14, and significantly potentiated the net enzyme stimulation elicited by corticotropin-releasing hormone and pituitary adenylate cyclase-activating peptide 38. Pertussis toxin prevented the NalBzoH stimulations of [35S]GTPgammaS binding and adenylyl cyclase activity. 4 In membranes of EPL and GRL, but not ON-GL, NalBzoH elicited a concentration-dependent inhibition of forskolin-stimulated adenylyl cyclase activity with pEC50 values of 8.07 and 8.08, respectively. 5 At concentrations that completely blocked the actions of nociceptin/orphanin FQ (N/OFQ), the ORL1 receptor antagonists CompB and [Nphe1]N/OFQ(1-13)NH2 failed to antagonize either the stimulatory or the inhibitory effect of NalBzoH on cyclic AMP formation. Similarly, the kappa1-opioid receptor antagonist nor-binaltorphimine counteracted the NalBzoH effects with relatively low potencies (pKi values=7.67-8.09). 6 Conversely, the selective delta-opioid receptor antagonist TIPP (pKi=9.10) and the selective mu-opioid receptor antagonist CTAP (pKi=8.27) reduced the inhibitory effect of NalBzoH by 70 and 30%, respectively. Moreover, TIPP and CTAP potently inhibited the NalBzoH stimulation of cyclic AMP, each antagonist maximally causing 50% blockade of the agonist response. 7These data demonstrate that in the olfactory bulb NalBzoH activates receptor signalling by acting through delta- and mu-opioid receptors and independently of ORL1 and kappa1-opioid receptors.

Agonist activity of naloxone benzoylhydrazone at recombinant and native opioid receptors.[Pubmed:16402046]

Br J Pharmacol. 2006 Feb;147(4):360-70.

1. In the present study, we examined the pharmacological activity of the putative kappa3-opioid receptor agonist Naloxone benzoylhydrazone (NalBzoH) at recombinant human opioid receptors individually expressed in Chinese hamster ovary (CHO) cells and native opioid receptors present in rat striatum. 2. At the mu-opioid receptor (MOR), NalBzoH stimulated guanosine-5'-O-(3-[35S]thio)triphosphate ([35S]GTPgammaS) binding (pEC50=8.59) and inhibited cyclic AMP accumulation (pEC50=8.74) with maximal effects (Emax) corresponding to 55 and 65% of those obtained with the MOR agonist DAMGO, respectively. The MOR antagonist CTAP blocked the stimulatory effects of NalBzoH and DAMGO with similar potencies. 3. At the kappa-opioid receptor (KOR), NalBzoH stimulated [35S]GTPgammaS binding (pEC50=9.70) and inhibited cyclic AMP formation (pEC50=9.45) as effectively as the selective KOR agonist (-)-U-50,488. The NalBzoH effect was blocked by the KOR antagonist nor-binaltorphimine (nor-BNI) (pKi=10.30). 4. In CHO cells expressing the delta-opioid receptor (DOR), NalBzoH increased [35S]GTPgammaS binding (pEC50=8.49) and inhibited cyclic AMP formation (pEC50=8.61) almost as effectively as the DOR agonist DPDPE. Naltrindole (NTI), a selective DOR antagonist, completely blocked the response to NalBzoH (pKi of 10.40). 5. In CHO cells expressing the nociceptin/orphanin FQ (N/OFQ) receptor (NOP), NalBzoH failed to exert agonist effects and antagonized the agonist-induced receptor activation. 6. When compared to other opioid receptor ligands, NalBzoH showed an efficacy that was lower than that of morphine at MOR, but higher at KOR and DOR. 7. In rat striatum, NalBzoH enhanced [35S]GTPgammaS binding and inhibited adenylyl cyclase activity. These effects were antagonized by either CTAP, nor-BNI or NTI, each antagonist blocking a fraction of the NalBzoH response. 8. These data demonstrate that NalBzoH displays agonist activity at MOR, DOR and KOR expressed either in a heterologous cell system or in a native environment.

Has the sun set on kappa3-opioid receptors?[Pubmed:16402044]

Br J Pharmacol. 2006 Feb;147(4):349-50.

Mu-opioid receptor agonists are a mainstay of clinical analgesia, despite the significant unwanted effects and dependence liability associated with drugs like morphine. The quest for opioids that produce analgesia with fewer undesirable effects has lead to the putative identification of multiple opioid receptor subtypes, despite the identification of only four opioid-related receptor genes. One such putative receptor subtype is the kappa3 receptor, activation of which supposedly produces analgesia in animals. In the present issue of this Journal, Olianas and co-workers have demonstrated that the prototypic kappa3 agonist Naloxone benzoylhydrazone is actually a partial agonist at the cloned mu, delta, and kappa opioid receptors and an antagonist at opioid-like NOP receptors. Together with a recent study that showed that high-affinity Naloxone benzoylhydrazone binding is abolished in triple mu/delta/kappa receptor knockout mice, the present study provides strong evidence that in vivo effects attributed to kappa3 receptor activation probably just reflect the combined actions of a particularly nonselective opioid drug. Indeed, molecular identification of any of the proposed subtypes of mu, delta, and kappa opioid receptors has proven elusive, suggesting that it is perhaps time to retire the notion of opioid receptor subtypes until definitive evidence for their existence is provided.

Pharmacological actions of a novel mixed opiate agonist/antagonist: naloxone benzoylhydrazone.[Pubmed:2553921]

J Pharmacol Exp Ther. 1989 Nov;251(2):469-76.

NalBzoH (6-desoxy-6-benzoylhydrazido-N-allyl-14-hydroxydihydronomorphin one) is a novel opiate with potent actions at both mu and kappa receptors. Analgesic studies in mice examining increasing doses of NalBzoH with a fixed dose of morphine revealed a biphasic curve. NalBzoH at doses as low as 1 microgram/kg partially antagonized morphine analgesia. Higher NalBzoH doses continued to inhibit morphine analgesia in a dose-dependent manner, with the 1-mg/kg dose antagonizing completely morphine analgesia. As the NalBzoH dose increased beyond 1 mg/kg analgesia returned. NalBzoH also prduced a similar analgesic response when administered alone in mice and also was active in rats. NalBzoH had excellent p.o. activity, with an analgesic potency in mice equivalent to s.c. administration. Naloxone reversed NalBzoH analgesia far less effectively than morphine analgesia. In contrast, Win44,441 antagonized both morphine and NalBzoH analgesia with a similar potency, consistent with a kappa mechanism for NalBzoH analgesia. Repeated administration of NalBzoH resulted in tolerance. There was no analgesic cross-tolerance between NalBzoH and either morphine or the kappa 1-selective agent U50,488H, implying a selective kappa 3 mechanism of analgesia. In addition to blocking morphine analgesia, low doses of NalBzoH also partially reversed the inhibition of gastrointestinal transit in mice produced by morphine, antagonized completely morphine lethality and precipitated withdrawal in morphine-dependent mice, confirming its antagonist activity in mu receptors. The duration of NalBzoH's kappa and mu actions differed dramatically. In mice, analgesia typically lasted less than 2 hr whereas the same NalBzoH dose antagonized completely morphine analgesia, a mu action, for 16 hr. Full sensitivity to morphine did not return for 32 hr.(ABSTRACT TRUNCATED AT 250 WORDS)

Description

Naloxone benzoylhydrazone (NalBzoH) is a mixed agonist/antagonist. Naloxone benzoylhydrazone is a prototypic κ3-opioid receptor agonist, and a partial agonist at the cloned μ and δ opioid receptors, and an antagonist at opioid-like NOP receptors. Naloxone benzoylhydrazone has potently analgesia effect.

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