4-AcO-MPT fumarate

Buy 4-AcO-MPT Fumarate Research Chemical Online – USA, Europe & Worldwide

Among the family of 4-substituted tryptamines, 4-AcO-MPT fumarate (4-acetoxy-N-methyl-N-propyltryptamine fumarate) occupies a distinctive position as a prodrug analog. The acetoxy group (-OCOCH₃) at the 4-position differentiates this compound from its 4-hydroxy counterpart (4-HO-MPT). In biological research models, the acetoxy moiety is susceptible to enzymatic hydrolysis by esterases, releasing the active 4-hydroxy metabolite. This prodrug property makes 4-AcO-MPT a valuable tool for researchers investigating metabolic activation pathways, comparative pharmacology between prodrugs and their active metabolites, and the stability of acetoxy vs. hydroxy tryptamines in various in vitro systems.

The mixed methyl/propyl substitution pattern on the terminal amine (N-methyl-N-propyl) creates an asymmetric center with distinct steric and lipophilic properties. For researchers investigating structure-activity relationships within the tryptamine family, 4-AcO-MPT fumarate offers a unique opportunity to study both the effects of N-alkyl chain lengthening and the role of the 4-acetoxy prodrug moiety. When you buy 4-AcO-MPT fumarate from RChems EU, you acquire a high-purity research compound manufactured under strict quality controls. Our 99% pure 4-AcO-MPT fumarate is intended exclusively for laboratory research—not for human or animal consumption—enabling precise, reproducible experiments in receptor pharmacology, metabolic stability, and SAR studies.

Key Features & Benefits

• Verified 99%+ Purity: Every batch undergoes independent HPLC, LC-MS, and ¹H/¹³C NMR analysis to guarantee ≥99% purity.
• 4-Acetoxy Prodrug Moiety: The acetoxy group enables comparative studies between prodrug forms and their 4-hydroxy metabolites, including hydrolysis rate determination and metabolic activation research.
• Mixed N-Methyl/N-Propyl Substitution: The asymmetric methyl/propyl pattern (C1/C3) allows systematic comparison with 4-AcO-DMT (dimethyl, C1/C1), 4-AcO-MET (methyl/ethyl, C1/C2), and 4-AcO-DPT (dipropyl, C3/C3).
• Enhanced Stability: The acetoxy group offers greater chemical stability during storage compared to the 4-hydroxy form, reducing oxidative degradation concerns.
• Fumarate Salt Form: Enhanced crystalline stability and predictable solubility in organic solvents compared to freebase forms.
• Receptor Selectivity Research Tool: Following hydrolysis, the active 4-hydroxy metabolite is ideal for investigating how N-alkyl chain lengthening influences 5-HT2A vs. 5-HT1A vs. 5-HT2C receptor binding.
• 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

Applications & Usage

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

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

• Prodrug Hydrolysis Studies: Evaluating enzymatic hydrolysis rates of the 4-acetoxy group using esterase-containing systems such as plasma, liver microsomes, S9 fractions, or purified carboxylesterases, with LC-MS/MS quantification of 4-HO-MPT formation.
• Serotonin Receptor Binding Assays (Post-Hydrolysis): Following controlled hydrolysis to the 4-hydroxy form, evaluating affinity (Ki) for 5-HT1A, 5-HT2A, and 5-HT2C receptors using radioligand displacement (e.g., [³H]ketanserin for 5-HT2A, [³H]8-OH-DPAT for 5-HT1A, [³H]mesulergine for 5-HT2C).
• G-protein Activation Functional Studies (Post-Hydrolysis): Measuring [³⁵S]GTPγS binding or BRET-based biosensors to assess efficacy and potency at serotonin receptors in transfected cell lines.
• 4-Acetoxy vs. 4-Hydroxy Comparative SAR: Systematically comparing 4-AcO-MPT with its 4-hydroxy metabolite (4-HO-MPT) to understand the pharmacological differences between prodrug and active forms, including receptor binding affinity, metabolic stability, and membrane permeability.
• N-Alkyl Chain Length SAR Investigations: Comparing the hydrolyzed product (4-HO-MPT) with 4-HO-DMT (dimethyl), 4-HO-MET (methyl/ethyl), and 4-HO-DPT (dipropyl) to map the impact of N-alkyl chain lengthening on receptor selectivity and intrinsic activity.
• Analytical Reference Standard: Serving as a high-purity calibrant for forensic toxicology, wastewater analysis, or novel psychoactive substance (NPS) screening methods, particularly for distinguishing acetoxy vs. hydroxy tryptamines.
• In Vitro Neurotoxicity Screening: Assessing cytotoxicity and oxidative stress markers in neuronal cell cultures (e.g., SH-SY5Y, primary cortical neurons), comparing the acetoxy and hydrolyzed hydroxy forms.

Researchers are encouraged to consult peer-reviewed literature (e.g., Journal of Medicinal Chemistry, Neuropharmacology, ACS Chemical Neuroscience, Drug Metabolism and Disposition) 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 prodrug and serotonin receptor research depends critically on compound purity. Impurities—particularly partially hydrolyzed 4-hydroxy byproducts, other 4-acetoxylated tryptamine isomers, N-desalkyl byproducts, or synthetic intermediates—can confound hydrolysis rate determinations and receptor binding assays. That is why 99% pure 4-AcO-MPT fumarate from RChems EU is subjected to a multi-laboratory quality control workflow:

1. High-Performance Liquid Chromatography (HPLC-DAD): Quantitative analysis at 220 nm, 254 nm, and 280 nm (indole ring absorption). Special attention is given to detecting the 4-hydroxy hydrolysis product (4-HO-MPT) as a potential impurity. Minimum acceptance criterion: ≥99.0% peak area purity.
2. Liquid Chromatography-Mass Spectrometry (LC-MS): Confirms molecular ion [M+H]⁺ = 275.2 for the freebase and detects trace-level organic impurities down to 0.05%, including the 4-hydroxy metabolite (4-HO-MPT, [M+H]⁺ = 233.2).
3. Nuclear Magnetic Resonance (NMR): Both proton (¹H) and carbon-13 (¹³C) NMR verify the correct indole ring system, 4-acetoxy substitution (characteristic acetoxy methyl singlet around 2.3 ppm and carbonyl carbon), and mixed methyl/propyl N-substitution pattern (methyl singlet, propyl terminal methyl triplet and internal methylene multiplet). Any spectral deviation—particularly signals indicative of partial hydrolysis (appearance of 4-hydroxy OH proton)—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 4-AcO-MPT fumarate for research, you receive a compound with verified absence of premature hydrolysis products.

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 4-AcO-MPT fumarate 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 under refrigeration (4°C) to minimize potential hydrolysis. Allow the sealed container to equilibrate to room temperature before opening to prevent condensation. Avoid prolonged exposure to moisture, air, light, and heat. The acetoxy group is more stable than the 4-hydroxy form but can still undergo hydrolysis in the presence of moisture.

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 4-AcO-MPT fumarate. 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 “4-AcO-MPT fumarate.”
• 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):

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 0.25 grams or 5 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

4-AcO-MPT fumarate (4-acetoxy-N-methyl-N-propyltryptamine fumarate) 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: 4-AcO-MPT fumarate may be a controlled substance or regulated analog in certain countries, states, or territories. In the United States, it may be considered a controlled substance analogue under the Federal Analogue Act (21 U.S.C. § 813) if intended for human consumption. Several European countries (including Germany, Sweden, and the UK) have specific analogue legislation or blanket scheduling for tryptamine derivatives. It is your sole responsibility to verify the legal status of 4-AcO-MPT fumarate 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 4-AcO-MPT fumarate is prohibited.

FAQ Section

1. What is 4-AcO-MPT fumarate used for in research?

4-AcO-MPT fumarate (4-acetoxy-N-methyl-N-propyltryptamine fumarate) is used in neuropharmacological research to study prodrug hydrolysis rates, metabolic activation pathways, and comparative pharmacology between acetoxy tryptamines and their 4-hydroxy metabolites. Following controlled hydrolysis, it is also used for serotonin receptor binding assays (5-HT2A, 5-HT1A, 5-HT2C) and structure-activity relationship investigations of N-alkyl chain lengthening.

2. Is 4-AcO-MPT fumarate legal to buy and possess for research?

Legality depends on your jurisdiction. 4-AcO-MPT 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 tryptamine scheduling. 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 4-AcO-MPT fumarate 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 4-AcO-MPT fumarate?

Every batch of 4-AcO-MPT fumarate from RChems EU is independently tested to be ≥99% pure via HPLC-DAD, with confirmation by LC-MS and ¹H/¹³C NMR. Special attention is given to detecting the 4-hydroxy hydrolysis product (4-HO-MPT) as a potential impurity. 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 220 nm, 254 nm, and 280 nm), with methods optimized to detect the 4-hydroxy hydrolysis product.
• LC-MS for molecular weight confirmation ([M+H]⁺ = 275.2 for freebase, plus monitoring for 4-HO-MPT at [M+H]⁺ = 233.2) and trace impurity detection down to 0.05%.
• ¹H and ¹³C NMR for structural confirmation (indole ring system, 4-acetoxy substitution with characteristic acetoxy methyl singlet, mixed methyl/propyl N-substitution pattern).
• 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 4-AcO-MPT fumarate to my country (USA, UK, Germany, Australia, Canada)?

RChems EU ships 4-AcO-MPT fumarate 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 tryptamine 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 4-AcO-MPT fumarate.

7. How should I store 4-AcO-MPT fumarate after delivery?

Store 4-AcO-MPT fumarate in a tightly sealed, amber glass vial under refrigeration (4°C) to minimize potential hydrolysis. For short-term use (≤2 weeks), room temperature (20–25°C) in a desiccator under inert atmosphere (argon or nitrogen) may be acceptable. Always allow the sealed container to reach room temperature before opening to prevent condensation. Avoid prolonged exposure to moisture, air, light, and heat.

8. What is the difference between 4-AcO-MPT and 4-HO-MPT?

The key difference lies in the 4-position substituent:

• 4-AcO-MPT has an acetoxy group (-OCOCH₃) at the 4-position
• 4-HO-MPT has a hydroxy group (-OH) at the 4-position

In biological research models, the acetoxy group is considered a prodrug moiety that is hydrolyzed by esterases to yield the active 4-hydroxy metabolite. Comparing these two compounds allows researchers to study hydrolysis rates in various in vitro systems (plasma, liver microsomes, brain tissue), stability differences between the two forms, and metabolic activation pathways for acetoxy tryptamines.

9. What is the difference between 4-AcO-MPT and psilacetin (4-AcO-DMT)?

The key structural differences lie in the N-alkyl substitution pattern:

• Psilacetin (4-AcO-DMT) has two methyl groups (N,N-dimethyl) – C1/C1
• 4-AcO-MPT has one methyl and one propyl group (N-methyl-N-propyl) – C1/C3

In prodrug and SAR research, comparing these two compounds allows researchers to investigate how extending one N-alkyl chain from methyl to propyl affects hydrolysis rates, receptor binding affinity of the resulting 4-hydroxy metabolite, and selectivity for 5-HT2A vs. 5-HT1A vs. 5-HT2C receptors.

10. What is the difference between 4-AcO-MPT and 4-AcO-MET?

The difference lies in the longer N-alkyl chain:

• 4-AcO-MET has a methyl and an ethyl group (C1/C2)
• 4-AcO-MPT has a methyl and a propyl group (C1/C3)

Comparing these two compounds allows researchers to investigate how extending the longer N-alkyl chain from ethyl (2 carbons) to propyl (3 carbons) affects hydrolysis rates and, after hydrolysis, the pharmacology of the resulting 4-hydroxy metabolites.

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 (4-AcO-MPT fumarate or 4-acetoxy-N-methyl-N-propyltryptamine fumarate) and your research affiliation. We will provide a redacted or full COA for the current batch, including HPLC chromatograms (with monitoring for 4-HO-MPT impurity) and NMR spectra, subject to verification of legitimate research intent.

Ready to advance your prodrug and acetoxytryptamine research? Order high-purity 4-AcO-MPT fumarate from RChems EU today and experience unmatched product quality, stealth global delivery, and professional scientific support. Buy 4-AcO-MPT Fumarate for Research

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