4-HO-MET 20 MG Pellets

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

Among the most widely studied 4-substituted tryptamines in modern neuropharmacology, 4-HO-MET (4-hydroxy-N-methyl-N-ethyltryptamine) holds a prominent position. Often referred to in the scientific literature by its colloquial designation “Metocin,” this compound is a structural analog of psilocin (4-HO-DMT), differing only by the replacement of one methyl group on the terminal amine with an ethyl group. This seemingly modest structural modification—extending one alkyl chain from one carbon to two—produces measurable differences in receptor binding kinetics, selectivity, and functional activity.

The 4-hydroxy group is of particular interest because it represents the active pharmacophore of several tryptamines and is structurally analogous to the endogenous neurotransmitter serotonin. For researchers investigating structure-activity relationships within the tryptamine family, 4-HO-MET offers a valuable tool for understanding how systematic variation of N-alkyl chain length (methyl → ethyl → propyl) impacts serotonin receptor interactions. 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-HO-MET 20 mg pellets from RChems EU, you acquire a high-purity research compound in a convenient, pre-dosed format. Our 99% pure 4-HO-MET pellets are intended exclusively for laboratory research—not for human or animal consumption—enabling precise, reproducible experiments in receptor pharmacology, neurochemistry, 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-Hydroxy Substitution: The 4-hydroxy group makes this compound a structural analog of psilocin (4-HO-DMT), enabling comparative SAR studies across the 4-hydroxytryptamine family.
• Mixed N-Methyl/N-Ethyl Substitution: Asymmetric N-alkyl pattern allows systematic comparison with 4-HO-DMT (dimethyl), 4-HO-MPT (methyl + propyl), and 4-HO-DET (diethyl).
• Well-Documented Research History: Extensively characterized in peer-reviewed literature with abundant reference data for assay development.
• Homogeneous Dosage Units: Consistent 20mg per pellet ensures reproducible sample preparation across multiple experiments.
• Reduced Variability: Pre-dosed format minimizes inter-operator and inter-experiment weighing variability.
• 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
Active Ingredient	4-HO-MET (4-hydroxy-N-methyl-N-ethyltryptamine)
IUPAC Name	3-[2-(ethyl(methyl)amino)ethyl]-1H-indol-4-ol
Dosage Form	Homogeneous solid pellets
Pellet Strength	20 mg of 4-HO-MET per pellet
Active Purity	≥99% (Verified by HPLC, NMR, MS)
Molecular Formula	C₁₃H₁₈N₂O
Molecular Weight	218.30 g/mol
CAS Number	Not publicly assigned (research chemical)
Synonyms	4-Hydroxy-N-methyl-N-ethyltryptamine, Metocin
Pellet Appearance	Uniform solid pellets
Excipients	Microcrystalline cellulose, lactose, magnesium stearate, colloidal silicon dioxide
Storage	Cool, dry, dark environment (refrigeration at 4°C recommended)
Chemical Class	Tryptamine / 4-Hydroxytryptamine derivative

Applications & Usage

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

4-HO-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:

• Serotonin Receptor Binding Assays: After dissolution of the pellet in appropriate solvent (ethanol or DMSO), researchers can evaluate 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: Measuring [³⁵S]GTPγS binding or BRET-based biosensors to assess efficacy and potency at serotonin receptors in transfected cell lines (e.g., HEK-293 cells expressing human 5-HT2A receptors).
• N-Alkyl Chain Length SAR Investigations: Systematically comparing 4-HO-MET (methyl + ethyl) with 4-HO-DMT (dimethyl), 4-HO-MPT (methyl + propyl), and 4-HO-DET (diethyl) to map the impact of incremental N-alkyl chain lengthening on receptor selectivity, intrinsic activity, and metabolic stability.
• 4-Hydroxy vs. 4-Acetoxy Comparisons: Comparing 4-HO-MET with its 4-acetoxy prodrug analog (4-AcO-MET) to study hydrolysis rates and metabolic activation pathways in in vitro models.
• Dose-Response Studies: The pre-dosed 20mg pellets enable consistent, repeatable dosing across multiple experimental replicates, reducing inter-sample variability.
• Metabolic Stability Research: Evaluating phase I and phase II metabolism using hepatic microsomes or S9 fractions with LC-MS/MS quantification, particularly glucuronidation of the 4-hydroxy group and N-dealkylation pathways.
• Analytical Reference Standard Preparation: Pellets can be dissolved to prepare calibrated solutions 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).

Researchers are encouraged to consult peer-reviewed literature (e.g., Journal of Medicinal Chemistry, Neuropharmacology, ACS Chemical Neuroscience, Psychopharmacology) 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 serotonin receptor research depends critically on compound purity. The active ingredient in each 4-HO-MET 20 mg pellet is subjected to rigorous independent testing before pelletization. Impurities—particularly other 4-hydroxylated tryptamine isomers, N-desalkyl byproducts, or oxidative degradation products (the 4-hydroxy group is susceptible to oxidation)—can produce false-positive signals in radioligand binding assays or confound functional response curves. That is why 99% pure 4-HO-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 oxidative degradation products. Minimum acceptance criterion: ≥99.0% peak area purity.
   • Liquid Chromatography-Mass Spectrometry (LC-MS): Confirms molecular ion [M+H]⁺ = 219.2 for the freebase and detects trace-level organic impurities down to 0.05%, including potential oxidation products.
   • Nuclear Magnetic Resonance (NMR): Both proton (¹H) and carbon-13 (¹³C) NMR verify the correct indole ring system, 4-hydroxy substitution (characteristic downfield OH proton exchangeable with D₂O), and mixed methyl/ethyl N-substitution pattern (methyl singlet, ethyl triplet and quartet). Any spectral deviation—particularly signals indicative of degradation—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-HO-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-HO-MET 20 mg pellets for research, you receive a consistent, high-precision product.

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 oxidative degradation of the 4-hydroxy group. Allow the sealed container to reach room temperature before opening to prevent condensation. Avoid prolonged exposure to air, light, and heat.

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-HO-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-HO-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):

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 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.
• 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-HO-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-HO-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-HO-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-HO-MET is prohibited.

FAQ Section

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

4-HO-MET 20 mg pellets are pre-dosed solid dosage units containing 4-hydroxy-N-methyl-N-ethyltryptamine. They are used in neuropharmacological research to study serotonin receptor binding affinity (5-HT2A, 5-HT1A, 5-HT2C), the effects of N-alkyl chain length on 4-hydroxytryptamine pharmacology, and structure-activity relationships comparing 4-HO-MET with psilocin (4-HO-DMT) and other 4-substituted tryptamines. The pre-dosed 20mg format is particularly valuable for dose-response studies, reducing measurement variability and saving laboratory time.

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-HO-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-HO-MET legal to buy and possess for research?

Legality depends on your jurisdiction. 4-HO-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-HO-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-HO-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 oxidative degradation products of the 4-hydroxy group. A lot-specific Certificate of Analysis (COA) for the active ingredient is available for every order upon request.

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

Store pellets in the original tightly sealed container under refrigeration (4°C) to minimize oxidative degradation of the 4-hydroxy group. 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 air, light, and heat.

8. What is the difference between 4-HO-MET pellets and 4-HO-MET powder?

The active compound is identical—both contain 4-hydroxy-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.

9. What is the difference between 4-HO-MET and psilocin (4-HO-DMT)?

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

• Psilocin (4-HO-DMT) has two methyl groups on the terminal amine (N,N-dimethyl) – both chains one carbon long
• 4-HO-MET has one methyl and one ethyl group (N-methyl-N-ethyl) – one chain one carbon, one chain two carbons

In serotonin receptor research, extending one alkyl chain from methyl (1 carbon) to ethyl (2 carbons) alters receptor binding affinity, selectivity for 5-HT2A vs. 5-HT1A vs. 5-HT2C, metabolic stability, and intrinsic efficacy. Comparing 4-HO-MET with psilocin allows researchers to systematically map the impact of incremental N-alkyl chain lengthening on 4-hydroxytryptamine pharmacology.

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

4-HO-MET has a hydroxy group (-OH) at the 4-position, while 4-AcO-MET has an acetoxy group (-OCOCH₃) at the same position. In biological research models, the acetoxy group is considered a prodrug moiety that is hydrolyzed by esterases to yield the active 4-hydroxy compound. Comparing 4-HO-MET with 4-AcO-MET allows researchers to study:

• Hydrolysis rates in various in vitro systems (plasma, liver microsomes, brain tissue)
• Stability differences between the two forms
• Metabolic activation pathways for acetoxy tryptamines

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

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

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