4-AcO-MET 20 MG Pellets

Buy 4-AcO-MET 20 MG Pellets Research Chemical Online – USA, Europe & Worldwide

Among the family of 4-substituted tryptamines, 4-AcO-MET (4-acetoxy-N-methyl-N-ethyltryptamine) occupies a distinctive position as a prodrug analog of the well-known research chemical 4-HO-MET (Metocin). The acetoxy group (-OCOCH₃) at the 4-position differentiates this compound from its 4-hydroxy counterpart. 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-MET 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/ethyl substitution pattern on the terminal amine (N-methyl-N-ethyl) creates an asymmetric center with distinct steric and lipophilic properties. For researchers investigating structure-activity relationships within the tryptamine family, 4-AcO-MET offers a unique opportunity to study both the effects of N-alkyl chain lengthening and the role of the 4-acetoxy prodrug moiety. The pre-dosed 20mg pellet format offers significant advantages over powdered chemicals for researchers conducting repetitive dose-response studies or requiring standardized sample preparation. When you buy 4-AcO-MET 20 mg pellets from RChems EU, you acquire a high-purity research compound in a convenient, pre-dosed format. Our 99% pure 4-AcO-MET pellets are 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

• Pre-Dosed 20mg Format: Eliminates need for manual weighing, reduces measurement error, and saves valuable laboratory time.
• Verified 99%+ Purity: Every batch of active ingredient undergoes independent HPLC, LC-MS, and ¹H/¹³C NMR analysis.
• 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-Ethyl Substitution: Asymmetric N-alkyl pattern allows systematic comparison with 4-AcO-DMT (dimethyl), 4-AcO-MPT (methyl + propyl), and 4-AcO-DET (diethyl).
• Enhanced Stability: The acetoxy group offers greater chemical stability during storage compared to the 4-hydroxy form, reducing oxidative degradation concerns.
• Well-Documented Research Applications: Suitable for serotonin receptor binding assays, G-protein activation studies, and analytical reference standard development.
• Homogeneous Dosage Units: Consistent 20mg per pellet ensures reproducible sample preparation across multiple experiments.
• 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-MET 20 mg pellets are utilized in a range of non-clinical, pre-clinical, and basic science research applications where pre-dosed formats offer advantages over powdered chemicals. 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-MET formation.
• Serotonin Receptor Binding Assays (Post-Hydrolysis): Following controlled hydrolysis to the 4-hydroxy form, evaluating affinity (Ki) for 5-HT1A, 5-HT2A, 5-HT2C, and other serotonin receptor subtypes using radioligand displacement (e.g., [³H]8-OH-DPAT for 5-HT1A, [³H]ketanserin for 5-HT2A, [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-MET with its 4-hydroxy metabolite (4-HO-MET) 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-MET) with 4-HO-DMT (dimethyl), 4-HO-MPT (methyl + propyl), and 4-HO-DET (diethyl) to map the impact of N-alkyl chain lengthening on receptor selectivity and intrinsic activity.
• Dose-Response Studies: The pre-dosed 20mg pellets enable consistent, repeatable dosing across multiple experimental replicates.
• 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. The active ingredient in each 4-AcO-MET 20 mg pellet is subjected to rigorous independent testing before pelletization. Impurities—particularly partially hydrolyzed 4-hydroxy byproducts (4-HO-MET), 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-MET is the foundation of every pellet from RChems EU:

1. Active Ingredient Testing (Pre-Pelletization):
   • 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-MET) as a potential impurity. Minimum acceptance criterion: ≥99.0% peak area purity.
   • Liquid Chromatography-Mass Spectrometry (LC-MS): Confirms molecular ion [M+H]⁺ = 261.2 for the freebase and detects trace-level organic impurities down to 0.05%, including the 4-hydroxy metabolite (4-HO-MET, [M+H]⁺ = 219.2).
   • 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/ethyl N-substitution pattern (methyl singlet, ethyl triplet and quartet). Any spectral deviation—particularly signals indicative of partial hydrolysis (appearance of 4-hydroxy OH proton)—triggers batch rejection.
   • Residual Solvent Analysis (GC-MS): Ensures compliance with ICH limits for Class 2 and Class 3 solvents.
   • Heavy Metal Testing (ICP-MS): Confirms levels below 20 ppm for lead, arsenic, cadmium, and mercury.
2. Post-Pelletization Quality Control:
   • Homogeneity Testing: Randomly selected pellets are assayed to confirm consistent 20mg ±5% active content.
   • Component Integrity Testing: HPLC-MS confirms no degradation or reaction between 4-AcO-MET and excipients during pelletization.
   • Disintegration Testing: Pellets tested for dissolution in standard laboratory solvents (ethanol, DMSO) to ensure complete release of active compound.

Each batch is assigned a unique lot number, and a Certificate of Analysis (COA) for the active ingredient is available upon request. This rigorous testing ensures that when you buy 4-AcO-MET 20 mg pellets for research, you receive a consistent, high-precision product 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 pellets or preparing solutions.
• Engineering Controls: Use a certified chemical fume hood or glove box when dissolving pellets or handling the active compound in solution.
• 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: Carefully collect intact pellets or powder from crushed pellets. Collect in a sealed, labeled container for hazardous waste disposal.
• Storage: Store pellets in the original tightly sealed container under refrigeration (4°C) to minimize potential hydrolysis. Allow the sealed container to reach 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-MET 20 mg pellets. 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-MET.”
• Vacuum-Sealed Inner Bags: Pellet blister packs or vials are heat-sealed to prevent tampering. No chemical name appears on the inner packaging.
• 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 of active ingredient is independently tested. We do not sell unverified material.
• Pre-Dosed Convenience: 20mg pellets eliminate the need for analytical weighing, saving time and reducing variability.
• Prodrug Research Focus: Specialized in providing acetoxy tryptamines for metabolic and hydrolysis studies.
• Responsive Scientific Support: Technical inquiries answered within 24 hours. Replacement policy for lost or damaged shipments (terms apply).
• 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-MET 20 mg pellets are sold by RChems EU strictly as a research chemical and are 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-MET 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-MET 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-MET is prohibited.

FAQ Section

1. What are 4-AcO-MET 20 mg pellets used for in research?

4-AcO-MET 20 mg pellets are pre-dosed solid dosage units containing 4-acetoxy-N-methyl-N-ethyltryptamine. They are 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, they are also used for serotonin receptor binding assays (5-HT2A, 5-HT1A, 5-HT2C) and structure-activity relationship investigations of N-alkyl chain lengthening.

2. How do I prepare the pellets for use in assays?

Pellets can be dissolved in an appropriate organic solvent (e.g., ethanol, methanol, or DMSO) to create a stock solution. The exact concentration should be verified by UV spectrophotometry or HPLC before use. The pellet matrix is designed to fully disintegrate and release the active compound in these solvents. For aqueous buffers, first dissolve the pellet in a small volume of ethanol or DMSO, then dilute with buffer (keeping final organic solvent concentration below 1-2% to avoid interference with biological assays).

3. Are the 20 mg pellets homogeneous in content?

Yes. Every pellet in a given batch contains a verified 20 mg (±5%) of 4-AcO-MET. RChems EU performs random sampling and content uniformity testing on each production batch to ensure consistent dosage across all pellets. The Certificate of Analysis (COA) includes content uniformity data upon request.

4. Is 4-AcO-MET legal to buy and possess for research?

Legality depends on your jurisdiction. 4-AcO-MET 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.

5. How discreet is the shipping from RChems EU?

Extremely discreet. All orders, including 4-AcO-MET 20 mg pellets, are shipped in plain, unmarked packaging with no external branding. The shipping label uses a generic return address. Inner packaging is vacuum-sealed with no chemical names visible. Our stealth protocol has enabled successful deliveries to over 45 countries with a 99%+ success rate.

6. What is the purity of the 4-AcO-MET in the pellets?

The active ingredient in every pellet 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-MET) as a potential impurity. A lot-specific Certificate of Analysis (COA) for the active ingredient is available for every order upon request.

7. How should I store 4-AcO-MET 20 mg pellets?

Store pellets in the original tightly sealed container 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-MET and 4-HO-MET?

The key difference lies in the 4-position substituent:

• 4-AcO-MET has an acetoxy group (-OCOCH₃) at the 4-position
• 4-HO-MET 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. 4-HO-MET is also known as Metocin.

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

The key structural difference lies in the N-alkyl substitution pattern:

• Psilacetin (4-AcO-DMT) has two methyl groups (N,N-dimethyl) – C1/C1
• 4-AcO-MET has one methyl and one ethyl group (N-methyl-N-ethyl) – C1/C2

In prodrug and SAR research, comparing these two compounds allows researchers to investigate how extending one N-alkyl chain from methyl to ethyl 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-MET pellets and 4-AcO-MET powder?

The active compound is identical—both contain 4-acetoxy-N-methyl-N-ethyltryptamine with ≥99% purity. The difference is the form factor: pellets are pre-dosed 20 mg units, while powder requires manual weighing on an analytical balance. Pellets offer convenience, reduced measurement error, and time savings for repetitive experiments, but may require dissolution in organic solvent before use in aqueous assay systems. Powder offers flexibility for custom dosing but requires precise weighing equipment and technique.

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-MET 20 mg pellets or 4-acetoxy-N-methyl-N-ethyltryptamine) and your research affiliation. We will provide a redacted or full COA for the active ingredient batch, including HPLC chromatograms (with monitoring for 4-HO-MET impurity) and NMR spectra, subject to verification of legitimate research intent.

Ready to advance your prodrug and acetoxytryptamine research with pre-dosed convenience? Order 4-AcO-MET 20 mg pellets from RChems EU today and experience unmatched product quality, stealth global delivery, and professional scientific support. Buy 4-AcO-MET 20 MG Pellets for Research

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