Macrodosing Pellets

Buy 4-Pro-MET Macrodosing Pellets

In short: each pellet contains exactly 20 mg 4-Pro-MET. Not approximately, not roughly – exactly. HPLC-tested at 99%+ purity, with a downloadable certificate of analysis. If you need a reliable, reproducible substance source for your research, you’re in the right place.

Why Macrodosing Pellets?

Imagine planning a study series with fixed dosage levels. 20 mg, 40 mg, 60 mg. With 4-Pro-MET 20mg pellets, you simply count them out. No scale, no pipette, no volumetric calculations. That doesn’t just save time – it eliminates an error source.

Compared to drops, pellets have a clear advantage: over 12 months shelf life, no refrigeration needed. The trade-off? You lose the continuously adjustable dosing flexibility of drops. For fixed protocols, research chemical pellets are the most pragmatic solution.

Why Order Here?

We specialize in tryptamine research chemicals. That means: HPLC-tested 99%+ purity, complete batch tracking, and discreet EU shipping within 48 hours. Free from €50. No hidden costs, no fine print.

Besides macrodosing pellets, you’ll also find 4-Pro-MET drops, microdosing pellets and 4-Pro-MET bundles with us. All HPLC-tested, all with certificate – one source for your entire research project.

What Exactly Is in a 4-Pro-MET Macrodosing Pellet?

A pressed pellet with 20 mg of the synthetic tryptamine 4-Propionoxy-N-methyl-N-ethyltryptamine. Sounds cumbersome? It is. But the substance itself is elegant: a prodrug that becomes something more familiar in the body. More on that shortly.

Chemical Fundamentals

4-Pro-MET belongs to the class of 4-substituted tryptamines. IUPAC name: 3-[2-(Ethyl(methyl)amino)ethyl]-1H-indol-4-yl propanoate. Molecular formula: C₁₅H₂₀N₂O₂, molar mass 274.36 g/mol. Those are the facts.

Prodrug Mechanism

Here’s where it gets interesting. Esterases enzymatically cleave the propionyl group – leaving 4-HO-MET (Metocin), the pharmacologically active metabolite. You might know the principle: psilocybin (4-PO-DMT) works the same way and converts to psilocin (4-HO-DMT). The pellet form doesn’t change this mechanism but stabilizes the ester group better than dissolved forms. A genuine plus for shelf life.

Standardized Dosing

Why is this so important? Because reproducibility is the backbone of any serious research. 20 mg per pellet – always. No weighing, no pipetting, no room for dosing errors. For studies with fixed dosage levels (20 mg, 40 mg, 60 mg), tryptamine pellets are the simplest handling you can get.

Shelf Life and Storage

Solid form = significantly more stable than liquid. With dry, light-protected storage below 25 °C, pellets last over 12 months. Refrigeration isn’t a must but extends shelf life further. Practical when stocking larger quantities for longer projects.

Quality Assurance – What We Test and Why

Purity claims without evidence are worthless. That’s why every batch goes through a multi-step testing process. Only what achieves at least 99% HPLC purity gets released. The certificate of analysis showing purity, identity and batch number is available online – fully traceable.

HPLC Analysis

HPLC (High Performance Liquid Chromatography) is the gold standard in pharmaceutical quality control. We test both active substance content and the absence of impurities and by-products. For selected batches, we supplement with GC-MS analysis. Double-tested is better.

Batch Tracking

Every package bears a unique batch number. This lets you retrieve the corresponding HPLC certificate at any time. Sounds obvious? Unfortunately, it isn’t everywhere. But it’s exactly what allows you to precisely link research results to a specific substance batch.

Storage

The ester group in 4-Pro-MET is sensitive to moisture. Hydrolytic cleavage = purity loss. Proper storage is not optional – it’s decisive.

Conditions

Temperature: below 25 °C – room temperature is fine, refrigerator is optimal. Humidity: below 60% relative humidity. Light protection: use original packaging, ideally in a closed cabinet.

Shelf Life

At room temperature: over 12 months. In the refrigerator: over 18 months. Important: reseal packaging immediately after each use. Every minute open is a minute of contact with humidity.

Research Applications

Where do 20 mg pellets get used? Wherever you need reproducible full doses and don’t want to waste time weighing. Here are the key application areas.

Receptor Binding Studies

The active metabolite 4-HO-MET shows high affinity for the serotonin 5-HT_2A receptor in vitro – published EC₅₀ values are in the low nanomolar range. With the fixed 20 mg dose, you prepare standardized solutions for binding assays in seconds. No weighing, no risk of error.

Structure-Activity Studies (SAR)

How does 4-Pro-MET compare to 4-AcO-MET or 4-AcO-DMT? Exactly such questions can be systematically answered with standardized pellets. Same dose, same form, different substance – that’s how you build comparable study series.

Pharmacokinetic Studies

As a prodrug, 4-Pro-MET is particularly fascinating for pharmacokinetic investigations. How fast does the propionyl group cleave in pellet form? Does the onset profile differ from the liquid form? With standardized research chemical pellets, you can investigate these questions cleanly.

Analytical Reference Standards

20 mg per pellet – a defined quantity ideally suited for preparing diluted calibration solutions. Whether HPLC, GC-MS or LC-MS/MS: forensic and toxicological laboratories value the quick, straightforward use. More in our research blog.

Ordering – How It Works

You know what you need? Then keep it simple. Select product, add to cart, order. No cumbersome registration form, no hidden costs.

Ordering Process

Choose your product, add it to the cart and complete your order. Orders placed before 2:00 PM ship the same business day. Yes, really.

Payment

We currently accept bank transfer (SEPA). Encrypted and secure – as it should be.

Shipping

Discreetly and neutrally packaged. No indication of contents, no conspicuous branding on the package. Within the EU, delivery takes 24–48 hours. Free shipping on orders over €50. Once your package is on its way, you’ll receive tracking via email.