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HexylHIBO

Cat No.:V50980 Purity: ≥98%
HexylHIBO is a type I mGluR antagonist (inhibitor) with Kb values of 140 and 110 μM at mGlu1a and mGlu5a receptors.
HexylHIBO
HexylHIBO Chemical Structure CAS No.: 334887-43-3
Product category: mGluR
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
10mg
Other Sizes
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Product Description
HexylHIBO is a type I mGluR antagonist (inhibitor) with Kb values of 140 and 110 μM at mGlu1a and mGlu5a receptors. HexylHIBO reduces sorbent sEPSC.
HexylHIBO is a selective antagonist of group I metabotropic glutamate receptors (mGluRs), specifically targeting the mGlu1a and mGlu5a subtypes. It is a 4-hexyl-substituted homoibotenic acid (HIBO) analogue used as a research tool to study the function of group I mGluRs in the central nervous system. HexylHIBO shows no significant binding to ionotropic glutamate receptors like AMPA, NMDA, or kainate receptors.
Biological Activity I Assay Protocols (From Reference)
Targets
HexylHIBO targets the group I metabotropic glutamate receptors, mGlu1a and mGlu5a. These are G protein-coupled receptors that play important roles in synaptic plasticity, learning, and memory. It acts as an antagonist, blocking the activation of these receptors by glutamate. It shows weak or no activity at other mGluR subtypes, including group II (mGluR2) and group III (mGluR4a) receptors.
ln Vitro
As a result, ambient glutamate levels influence cortical excitability by potently activating mGluRs [1].
In vitro, HexylHIBO is a group I mGluR antagonist with Kb values of 140 µM at mGlu1a and 110 µM at mGlu5a receptors. It is selective for group I mGluRs over group II and III receptors. It shows no significant binding affinity for AMPA, NMDA, and kainate receptors. This selectivity profile makes it a useful tool for studying group I mGluR function.
ln Vivo
In vivo, HexylHIBO has been shown to inhibit NMDA-induced seizures in mice when administered via intracerebroventricular (i.c.v.) injection at doses of 6.3 and 12.5 mg/kg. This suggests that group I mGluR antagonism can modulate glutamatergic transmission and seizure activity. Its effects in other in vivo models would be detailed in the primary literature.
Enzyme Assay
The binding affinity and functional activity of HexylHIBO are assessed using in vitro receptor binding and functional assays. Its affinity for mGlu1a and mGlu5a receptors is measured in radioligand binding assays, where its Kb (inhibition constant) values are determined. Its selectivity is confirmed by testing it against other mGluR subtypes and ionotropic glutamate receptors.
Cell Assay
The cellular activity of HexylHIBO is evaluated in cells expressing group I mGluRs. Its ability to antagonize receptor activation is assessed by measuring downstream signaling events, such as intracellular calcium mobilization or phosphoinositide hydrolysis. By blocking the receptor, it prevents glutamate-induced signaling, and its potency as an antagonist is determined.
Animal Protocol
In animal studies, HexylHIBO is typically administered via intracerebroventricular (i.c.v.) injection to directly target the central nervous system. In models of seizures, it is given prior to the seizure-inducing agent (e.g., NMDA), and its ability to inhibit seizure activity is assessed. The compound's effects on behavior and neurological function can be evaluated.
ADME/Pharmacokinetics
HexylHIBO has a molecular weight of 256.3 and a formula of C12H20N2O4. It is soluble in DMSO (100 mg/mL) and in 1M NaOH. It is recommended to be stored in a dark place at 2-8°C. Detailed pharmacokinetic parameters, such as half-life and bioavailability, are not extensively documented.
Toxicity/Toxicokinetics
Toxicology data for HexylHIBO is limited, as it is a research compound not intended for human use. Its safety profile has not been established in formal toxicology studies. Standard laboratory safety precautions should be followed when handling this compound.
References

[1]. Synthesis and pharmacology of 3-isoxazolol amino acids as selective antagonists at group I metabotropic glutamic acid receptors. J Med Chem. 2001;44(7):1051-1059.

[2]. Bandrowski AE, et al, Prince DA. Baseline glutamate levels affect group I and II mGluRs in layer V pyramidal neurons of rat sensorimotor cortex. J Neurophysiol. 2003;89(3):1308-1316.

Additional Infomation
HexylHIBO (CAS: 334887-43-3) is a valuable research tool for studying the role of group I metabotropic glutamate receptors. Its selectivity for mGlu1a and mGlu5a over other glutamate receptors makes it a useful compound for dissecting the specific functions of these receptors in the brain. It is used in neuroscience research to investigate synaptic plasticity, learning, memory, and neurological disorders.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C12H20N2O4
Exact Mass
256.142
CAS #
334887-43-3
PubChem CID
3984764
Appearance
Off-white to light yellow solid powder
Density
1.176 g/cm3
LogP
1.745
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
8
Heavy Atom Count
18
Complexity
352
Defined Atom Stereocenter Count
0
SMILES
CCCCCCC1C(=O)NOC=1CC(C(=O)O)N
InChi Key
OKJBLHIYOWSQDJ-UHFFFAOYSA-N
InChi Code
InChI=1S/C12H20N2O4/c1-2-3-4-5-6-8-10(18-14-11(8)15)7-9(13)12(16)17/h9H,2-7,13H2,1H3,(H,14,15)(H,16,17)
Chemical Name
2-amino-3-(4-hexyl-3-oxo-1,2-oxazol-5-yl)propanoic acid
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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