| Size | Price | Stock | Qty |
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| 50mg |
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| 100mg |
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| 250mg |
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| 500mg |
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| Other Sizes |
| Targets |
Dihydropteridine reductase
4-O-Methyldopamine HCl targets dihydropteridine reductase, an enzyme involved in the regeneration of tetrahydrobiopterin (BH4), a cofactor for aromatic amino acid hydroxylases including tyrosine hydroxylase and tryptophan hydroxylase. By inhibiting this enzyme, the compound may affect neurotransmitter synthesis. However, its primary utility is as a research tool for studying catecholamine metabolism and as a dopamine metabolite. |
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| ln Vitro |
Catecholamines and related compounds, such as dopamine, 5- or 6-hydroxydopamine, N-methyldopamine, tyramine, octopamine, norepinephrine and epinephrine, inhibit human liver dihydropteridine reductase (NADH:6,7-dihydropteridine oxidoreductase, EC 1.6.99.10) noncompetitively with Ki values ranging from 7.0 X 10(-6) - 1.9 X 10(-4)M (I50 values = 2.0 X 10(-5) - 2.0 X 10(-4)M). The tyrosine analogs alpha-methyltyrosine and 3-iodotyrosine are weak inhibitors of this enzyme (I50 greater than 10(-3)M). The inhibitory effect of catecholamines is slightly decreased by O-methylation of one hydroxyl group, but is essentially abolished by total methylation. The inhibitory strength of the catecholamines and related compounds tested against this enzyme can be arranged in the following order: dopamine, 6-hydroxydopamine, 5-hydroxydopamine, N-methyldopamine greater than tyramine, 3-O-methyldopamine, 4-O-methyldopamine much greater than epinephrine, 3-O-methylepinephrine, norepinephrine, octopamine less than tyrosine much less than alpha-methyltyrosine, 3-iodotyrosine much less than homoveratrylamine. These results suggest that dopamine, norepinephrine and epinephrine may serve as physiological regulators of mammalian dihydropteridine reductase[1].
In vitro, 4-O-Methyldopamine HCl has been shown to have inhibitory activity against dihydropteridine reductase. As a catecholamine compound, it is used to study dopamine metabolism and neurotransmitter pathways. However, specific pharmacological activity data such as IC50 values are not detailed in the available literature. |
| ln Vivo |
In vivo data for 4-O-Methyldopamine HCl are limited. As a catecholamine compound and dopamine metabolite, it may be involved in neurotransmitter metabolism in vivo. However, the compound is not used as a therapeutic agent. Its primary value is as a research tool for studying catecholamine pathways.
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| Enzyme Assay |
In vitro enzyme assays for 4-O-Methyldopamine HCl measure its inhibition of dihydropteridine reductase. The enzyme is incubated with varying concentrations of the compound and its substrate, and enzyme activity is measured. The compound's inhibitory activity is determined from dose-response curves.
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| Cell Assay |
Cell-based assays for 4-O-Methyldopamine HCl are conducted in neuronal cell lines or other cells relevant to catecholamine metabolism. Cells are treated with the compound, and effects on neurotransmitter synthesis or metabolism are assessed. However, specific protocols are not extensively documented.
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| Animal Protocol |
In vivo animal experiments with 4-O-Methyldopamine HCl are not extensively documented. The compound is primarily used as a research reagent for in vitro studies. Its value is in studying catecholamine metabolism and neurotransmitter pathways.
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| ADME/Pharmacokinetics |
Pharmacokinetic properties of 4-O-Methyldopamine HCl are not extensively characterized. The compound has a molecular formula of C9H14ClNO2 and a molecular weight of 203.67. Solubility: DMSO: ~100 mg/mL (~490.99 mM). Storage: powder at -20°C for 3 years; in solvent at -80°C for 6 months.
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| Toxicity/Toxicokinetics |
Safety and toxicology data for 4-O-Methyldopamine HCl are limited. The compound is for research use only and is not approved for human therapeutic use. Standard laboratory safety precautions should be followed when handling the compound. No specific toxicity data are available.
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| References |
[1]. Inhibition of dihydropteridine reductase by catecholamines and related compounds. Biochim Biophys Acta. 1983 Feb 28;743(1):129-35.
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| Additional Infomation |
4-O-Methyldopamine HCl has CAS number 645-33-0, molecular formula C9H14ClNO2, and molecular weight 203.67. Synonyms: 4-methoxy-3-hydroxyphenethylamine hydrochloride, 4-methoxytyramine hydrochloride. It is a catecholamine compound that inhibits dihydropteridine reductase. Purity: ≥98%. Not for human use; for research purposes only.
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| Molecular Formula |
C9H14CLNO2
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|---|---|
| Molecular Weight |
203.6660
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| Exact Mass |
203.071
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| CAS # |
645-33-0
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| Related CAS # |
3213-30-7 (Parent)
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| PubChem CID |
11665606
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| Appearance |
Typically exists as White to off-white solid at room temperature
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| Boiling Point |
306.8ºC at 760 mmHg
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| Melting Point |
207-211 °C
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| Flash Point |
139.3ºC
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| LogP |
2.404
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| Hydrogen Bond Donor Count |
3
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| Hydrogen Bond Acceptor Count |
3
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| Rotatable Bond Count |
3
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| Heavy Atom Count |
13
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| Complexity |
130
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| Defined Atom Stereocenter Count |
0
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| SMILES |
Cl.O(C)C1C=CC(=CC=1O)CCN
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| InChi Key |
KAAFITWSSODFMA-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C9H13NO2.ClH/c1-12-9-3-2-7(4-5-10)6-8(9)11;/h2-3,6,11H,4-5,10H2,1H3;1H
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| Chemical Name |
5-(2-aminoethyl)-2-methoxyphenol;hydrochloride
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| Synonyms |
645-33-0; 3-Hydroxy-4-methoxyphenethylamine hydrochloride; 5-(2-aminoethyl)-2-methoxyphenol hydrochloride; 4-O-Methyldopamine hydrochloride; MFCD00012896; 4-Methoxytyramine hydrochloride; 5-(2-aminoethyl)-2-methoxyphenol;hydrochloride; 5CP13H7TI9;
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| HS Tariff Code |
2934.99.9001
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| 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)
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| Solubility (In Vitro) |
DMSO : ~100 mg/mL (~490.99 mM)
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| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 ：Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 4.9099 mL | 24.5495 mL | 49.0990 mL | |
| 5 mM | 0.9820 mL | 4.9099 mL | 9.8198 mL | |
| 10 mM | 0.4910 mL | 2.4550 mL | 4.9099 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
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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