4B-MAR (4-Bromo-4-methylaminorex)

Buy 4B-MAR Research Chemical Online – USA, Europe & Worldwide

The substituted aminorex class of research chemicals has emerged as a significant focus in neuropharmacology due to their potent monoamine-releasing properties and distinct structure-activity relationships. 4B-MAR (4-Bromo-4-methylaminorex) , also referred to as 4′-Bromo-4-methylaminorex, is a structural analog of the parent compound 4-methylaminorex, distinguished by the introduction of a bromine atom at the 4-position of the phenyl ring. This halogen substitution—the largest and most polarizable of the common halogens (F, Cl, Br)—fundamentally alters the compound’s electronic properties, lipophilicity, steric profile, and metabolic stability.

Bromine substitution occupies the terminal position in the halogen series for this scaffold, offering researchers the ability to study the effects of maximal halogen size and polarizability on monoamine transporter activity. For researchers investigating the molecular mechanisms of monoamine releasing agents and systematically mapping the impact of halogen selection (F, Cl, Br) on dopamine, norepinephrine, and serotonin transporter interactions, 4B-MAR provides the critical endpoint alongside its fluorinated (4F-MAR) and chlorinated (4C-MAR) analogs. When you buy 4B-MAR from RChems EU, you acquire a high-purity research compound manufactured under strict quality controls. Our 99% pure 4B-MAR is intended exclusively for laboratory research—not for human or animal consumption—enabling precise, reproducible experiments in receptor pharmacology, neurochemistry, and behavioral neuroscience.

Key Features & Benefits

• Verified 99%+ Purity: Every batch undergoes independent HPLC, LC-MS, and ¹H/¹³C NMR analysis to guarantee ≥99% purity.
• Brominated Aminorex Analog: The 4-bromo substitution enables SAR studies comparing halogen effects (F, Cl, Br) on monoamine transporter activity across the complete halogen series.
• Potent Monoamine Releasing Agent: Investigates dopamine (DAT), norepinephrine (NET), and serotonin (SERT) transporter interactions in in vitro models.
• Aminorex Class Research Tool: Structurally related to 4-methylaminorex for comparative pharmacology studies across halogenated derivatives.
• Largest Halogen in Series: Bromine offers maximal size and polarizability among common halogens, ideal for completing systematic SAR investigations (F → Cl → Br).
• Distinct Pharmacokinetic Profile: Bromine substitution significantly alters metabolic stability and lipophilicity compared to lighter halogen analogs.
• Worldwide Delivery: Fast, tracked shipping to the USA, Canada, Europe, Australia, and select Asian research hubs.
• Discreet Packaging Protocol: Plain outer boxes, unmarked labels, vacuum-sealed inner bags—no chemical names on the parcel.

Product Specifications

Property	Specification
IUPAC Name	4-bromo-N-methyl-4,5-dihydro-1,3-oxazol-2-amine
CAS Number	Not publicly assigned (research chemical)
Synonyms	4-Bromo-4-methylaminorex, 4′-Bromo-4-methylaminorex, 4B-MAR
Physical State	Crystalline powder
Purity Analysis	HPLC (≥99%), LC-MS, ¹H/¹³C NMR
Loss on Drying	<0.5%
Residual Solvents	Compliant with ICH Q3C guidelines
Heavy Metals	<20 ppm
Chemical Class	Aminorex / Stimulant / Monoamine releasing agent

Applications & Usage

⚠️ Strictly for laboratory research use only. Not for human or animal consumption.

4B-MAR is utilized in a range of non-clinical, pre-clinical, and basic science research applications. Typical areas of investigation include:

• Monoamine Transporter Binding Assays: Evaluating affinity (Ki) for dopamine transporter (DAT), norepinephrine transporter (NET), and serotonin transporter (SERT) using radioligand displacement (e.g., [³H]WIN 35,428 for DAT, [³H]nisoxetine for NET, [³H]citalopram for SERT) in transfected cell lines or synaptosomal preparations.
• Neurotransmitter Release Assays: Measuring monoamine release using in vitro superfusion or microdialysis techniques to assess the potency and efficacy of 4B-MAR as a releasing agent compared to reuptake inhibition.
• Complete Halogen SAR Investigations: Systematically comparing 4B-MAR (4-bromo) with 4F-MAR (4-fluoro), 4C-MAR (4-chloro), and 4-methylaminorex (non-halogenated) to map the impact of halogen identity (F → Cl → Br) on monoamine transporter selectivity, potency, and efficacy. This complete series allows researchers to correlate halogen size, electronegativity, polarizability, and lipophilicity with pharmacological activity across the entire halogen range.
• Neurochemistry Research: Investigating the effects of brominated aminorex analogs on central nervous system neurotransmitter systems, including dopamine, norepinephrine, and serotonin pathways.
• Metabolic Stability Research: Evaluating phase I metabolism using hepatic microsomes or S9 fractions with LC-MS/MS quantification, studying how bromine substitution affects oxidative metabolism compared to fluorine and chlorine analogs (bromine may be more susceptible to oxidative debromination).
• Analytical Reference Standard: Serving as a high-purity calibrant for forensic toxicology, wastewater analysis, or novel psychoactive substance (NPS) screening methods.
• In Vitro Neurotoxicity Screening: Assessing cytotoxicity, mitochondrial function, and oxidative stress markers in neuronal cell cultures (e.g., SH-SY5Y, primary cortical neurons) across the complete halogenated aminorex series.

Researchers are encouraged to consult peer-reviewed literature (e.g., Journal of Pharmacology and Experimental Therapeutics, Neuropharmacology, European Journal of Pharmacology, ACS Chemical Neuroscience) for established in vitro protocols. RChems EU does not provide research protocols but guarantees the compound’s structural integrity and purity for such applications.

Purity & Testing

Reproducibility in monoamine transporter research and neuropharmacology depends critically on compound purity. Impurities—particularly other aminorex isomers, synthetic intermediates, or degradation products—can produce false-positive signals in transporter binding assays or confound functional release measurements. That is why 99% pure 4B-MAR from RChems EU is subjected to a multi-laboratory quality control workflow:

1. High-Performance Liquid Chromatography (HPLC-DAD): Quantitative analysis at multiple wavelengths. Minimum acceptance criterion: ≥99.0% peak area purity.
2. Liquid Chromatography-Mass Spectrometry (LC-MS): Confirms molecular ion [M+H]⁺ = 255.0/257.0 (bromine isotope pattern) and detects trace-level organic impurities down to 0.05%. The characteristic 1:1 isotope ratio for bromine-containing compounds serves as an additional identity confirmation.
3. Nuclear Magnetic Resonance (NMR): Both proton (¹H) and carbon-13 (¹³C) NMR verify the correct oxazoline ring system, N-methyl group, and 4-bromo substitution pattern on the phenyl ring (characteristic aromatic splitting patterns and downfield shifts due to bromine). Any spectral deviation—particularly signals indicative of incorrect substitution—triggers batch rejection.
4. Residual Solvent Analysis (GC-MS): Ensures compliance with ICH limits for Class 2 and Class 3 solvents.
5. Heavy Metal Testing (ICP-MS): Confirms levels below 20 ppm for lead, arsenic, cadmium, and mercury.

Each batch is assigned a unique lot number, and a Certificate of Analysis (COA) is available upon request. This rigorous testing ensures that when you buy 4B-MAR for research, you receive a compound that performs consistently from order to order.

Safety & Handling Guidelines

⚠️ FOR LABORATORY RESEARCH USE ONLY. NOT FOR HUMAN OR ANIMAL CONSUMPTION.

• Personal Protective Equipment (PPE): Always wear nitrile gloves, a lab coat, and chemical splash goggles when handling 4B-MAR powder.
• Engineering Controls: Use a certified chemical fume hood or glove box to prevent inhalation of airborne particulates.
• First Aid Measures:
  • Inhalation: Remove to fresh air. If breathing difficulty persists, seek medical attention.
  • Skin Contact: Wash with soap and copious water for 15 minutes. Remove contaminated clothing.
  • Eye Contact: Rinse cautiously with water for 15 minutes. Consult an ophthalmologist if irritation persists.
  • Ingestion: Do NOT induce vomiting. Rinse mouth and seek immediate medical attention.
• Spill Management: Vacuum or sweep gently (avoid generating dust). Collect in a sealed, labeled container for hazardous waste disposal.
• Storage: Store in a tightly sealed, amber glass vial at room temperature (20–25°C) in a desiccator, protected from light and moisture. For long-term storage (>6 months), refrigeration at 4°C under inert atmosphere (argon or nitrogen) is recommended. Refer to the Material Safety Data Sheet (MSDS) for detailed handling instructions.

By purchasing from RChems EU, you confirm that you are a qualified researcher (or authorized agent) and that your facility can handle this compound safely.

Global Shipping & Discreet Delivery

RChems EU has perfected a discreet, reliable global logistics system for all research chemical orders, including 4B-MAR. We understand that confidentiality is essential for many academic and private research organizations.

What discreet delivery means for you:

• Plain Outer Packaging: Your order arrives in a non-descript padded envelope or small cardboard box. No logos, no brand names, no chemical identifiers.
• Unmarked Shipping Label: The return address uses a generic name (e.g., “L.C. Distribution” or “WH Logistics”). No reference to “RChems EU” or “4B-MAR.”
• Vacuum-Sealed Inner Bags: Each bag is heat-sealed to prevent leakage, odor, and tampering. No chemical name appears on the inner bag.
• No External Documentation: Invoices, COAs, or packing slips are sent via encrypted email only—never placed inside the parcel.

Fast worldwide delivery times (tracked):

Region	Estimated Transit Time
USA & Canada	5–9 business days
Europe (UK, Germany, France, Spain, Italy, Netherlands)	3–7 business days
Australia & New Zealand	7–12 business days
Rest of World (select countries)	7–14 business days

Every shipment includes a real-time tracking number. Expedited courier options (FedEx Priority, DHL Express) are available at checkout for faster delivery (2–5 days globally).

Why Choose RChems EU?

• Stealth Packaging Experts: Over 7,000 successful shipments to 45+ countries with minimal customs interference.
• Third-Party Verified Purity: Every batch is independently tested. We do not sell unverified or “research grade” material without documentation.
• Responsive Scientific Support: Technical inquiries answered within 24 hours. Replacement policy for lost or damaged shipments (terms apply).
• No Minimum Order Quantity (MOQ): Order 1 gram or 25 grams—same meticulous packaging and quality standards.
• Flexible Payment Methods: Secure cryptocurrency (BTC, ETH, USDT) and select credit card options.
• Global Compliance Awareness: We monitor international regulations and adjust shipping policies accordingly.

Legal & Safety Disclaimer

⚠️ IMPORTANT – READ CAREFULLY BEFORE PURCHASING

4B-MAR (4-Bromo-4-methylaminorex) is sold by RChems EU strictly as a research chemical and is not for human consumption, animal testing, or any form of in vivo use without appropriate institutional ethical approval. This product is not a pharmaceutical, medicinal product, dietary supplement, or recreational substance.

Legal Status Varies by Jurisdiction: 4B-MAR may be a controlled substance or regulated analog in certain countries, states, or territories. In the United States, 4-methylaminorex is a Schedule I controlled substance, and structural analogs may be considered controlled substance analogues under the Federal Analogue Act (21 U.S.C. § 813) if intended for human consumption. Several European countries have specific analogue legislation or blanket scheduling for aminorex derivatives. It is your sole responsibility to verify the legal status of 4B-MAR in your country, state, or province before ordering.

By completing your purchase, you certify that:

1. You are at least 18 years of age.
2. You are a qualified researcher affiliated with a bona fide laboratory or academic institution.
3. You will use this product exclusively for lawful, laboratory-based research purposes.
4. You will not introduce this compound into the body of any human or animal.

RChems EU reserves the right to cancel any order that appears destined for non-research use or for a jurisdiction where 4B-MAR is prohibited.

FAQ Section

1. What is 4B-MAR used for in research?

4B-MAR (4-Bromo-4-methylaminorex) is used in neuropharmacological research to study monoamine transporter interactions (dopamine, norepinephrine, and serotonin transporters), the effects of bromination on aminorex pharmacology, and structure-activity relationships comparing halogen substitution (F, Cl, Br) on monoamine releasing agent activity. As the brominated member of the halogen series, it completes the systematic SAR investigation across the full halogen range.

2. Is 4B-MAR legal to buy and possess for research?

Legality depends on your jurisdiction. 4B-MAR is not explicitly scheduled at the US federal level but may be considered a controlled substance analogue under the Federal Analogue Act (21 U.S.C. § 813) if intended for human consumption. Many European countries have analogue legislation or specific scheduling for aminorex derivatives. You must check your local regulations before ordering. RChems EU ships on the condition that you assume full legal responsibility.

3. How discreet is the shipping from RChems EU?

Extremely discreet. All 4B-MAR orders are shipped in plain, unmarked packaging with no external branding. The shipping label uses a generic return address. Inner bags are vacuum-sealed with no chemical names or CAS numbers visible. Our stealth protocol has enabled successful deliveries to over 45 countries with a 99%+ success rate.

4. What is the guaranteed purity level of your 4B-MAR?

Every batch of 4B-MAR from RChems EU is independently tested to be ≥99% pure via HPLC-DAD, with confirmation by LC-MS and ¹H/¹³C NMR. A lot-specific Certificate of Analysis (COA) is available for every order upon request.

5. How is the 99% purity tested?

We employ a five-tier analytical protocol:

• HPLC-DAD for quantitative purity (≥99% peak area at multiple wavelengths).
• LC-MS for molecular weight confirmation ([M+H]⁺ = 255.0/257.0 with characteristic 1:1 bromine isotope pattern) and trace impurity detection down to 0.05%.
• ¹H and ¹³C NMR for structural confirmation (oxazoline ring system, N-methyl group, 4-bromo substitution pattern on the phenyl ring).
• GC-MS for residual solvent analysis (ICH compliance).
• Heavy metal testing (ICP-MS) to confirm levels below 20 ppm.

All testing is performed by an ISO 17025-accredited contract laboratory.

6. Can you ship 4B-MAR to my country (USA, UK, Germany, Australia, Canada)?

RChems EU ships 4B-MAR worldwide, including the USA, Canada, United Kingdom, Germany, France, Italy, Spain, Netherlands, Switzerland, Norway, Australia, and New Zealand. However, due to varying legal statuses of aminorex derivatives, we strongly recommend contacting our support team before ordering if you are located in Germany, Sweden, Finland, or any country with broad analogue legislation. For countries with strict import controls (e.g., Japan, Singapore, South Korea), we do not currently ship 4B-MAR.

7. How should I store 4B-MAR after delivery?

Store 4B-MAR in a tightly sealed, amber glass vial at room temperature (20–25°C) in a desiccator, protected from light and moisture. For long-term storage (>6 months), refrigeration at 4°C under inert atmosphere (argon or nitrogen) is recommended. Always allow the sealed container to reach room temperature before opening to prevent condensation. Refer to the Material Safety Data Sheet (MSDS) for complete storage and handling instructions.

8. What is the difference between 4B-MAR, 4F-MAR, and 4C-MAR?

These are halogen-substituted analogs of 4-methylaminorex with different halogens at the 4-position, forming a complete SAR series:

• 4F-MAR has a fluorine atom (smallest halogen, strongest electronegativity, least polarizable)
• 4C-MAR has a chlorine atom (intermediate size, electronegativity, and polarizability)
• 4B-MAR has a bromine atom (largest halogen, most polarizable, most lipophilic, least electronegative)

Comparing these three compounds allows researchers to systematically investigate how halogen size, electronegativity, polarizability, and lipophilicity affect monoamine transporter binding, selectivity, potency, and efficacy. This complete series (F → Cl → Br) provides a comprehensive SAR model for understanding halogen substitution effects in monoamine releasing agents, with 4B-MAR representing the endpoint of the series.

9. What is the mechanism of action of 4B-MAR in research models?

In in vitro research models, 4B-MAR acts primarily as a monoamine releasing agent, promoting the release of dopamine, norepinephrine, and serotonin from presynaptic terminals. This is distinct from reuptake inhibitors (such as cocaine or methylphenidate) which block transporter function without promoting release. The specific selectivity ratio for DAT vs. NET vs. SERT can be determined using neurotransmitter release assays in transfected cell lines or synaptosomal preparations. The bromine substitution at the 4-position—being the largest and most polarizable halogen—may significantly influence this selectivity profile compared to fluorine, chlorine, or non-halogenated analogs.

10. Why study the complete halogenated aminorex series (4F-MAR, 4C-MAR, 4B-MAR)?

The systematic study of the complete halogen series (F, Cl, Br) at the 4-position of the aminorex scaffold allows researchers to:

• Correlate halogen properties (size, electronegativity, polarizability, lipophilicity) with pharmacological activity across a continuous gradient
• Determine the optimal halogen for specific monoamine transporter selectivity profiles
• Understand electronic vs. steric effects on transporter binding and releasing activity
• Predict the pharmacological profile of novel or untested halogenated analogs
• Establish comprehensive SAR models that guide the design of future research compounds

This complete series (F → Cl → Br) represents one of the most systematic SAR investigations possible for understanding halogen substitution effects in monoamine releasing agents. 4B-MAR provides the critical endpoint for this series.

11. Do you offer a reshipment policy if customs seizes my package?

Yes. RChems EU offers a one-time reshipment policy for confirmed customs seizures in most countries, provided that the original shipping address is valid and the buyer did not violate known local laws. Crypto payments qualify for the full reshipment guarantee. Terms and conditions apply—please contact customer support for details.

12. Can I get a Certificate of Analysis (COA) before ordering?

Absolutely. Contact our support team via email with the product name (4B-MAR or 4-Bromo-4-methylaminorex) and your research affiliation. We will provide a redacted or full COA for the current batch, including HPLC chromatograms and NMR spectra (with characteristic bromine isotope patterns visible in MS), subject to verification of legitimate research intent.

Ready to complete your halogenated aminorex SAR research with the brominated analog? Order high-purity 4B-MAR from RChems EU today and experience unmatched product quality, stealth global delivery, and professional scientific support. Buy 4B-MAR for Research

RChems EU – Your trusted global supplier of 99% pure research chemicals.