4-Pro-MET: Research-Grade Tryptamine, Shipped Fast

We started 4promet because we were tired of the same old problems. Vendors who claim "pure" without a shred of evidence. Shops that don't even know what HPLC stands for.

Here's what's different: every single batch ships with a real COA. Not a template. Not a screenshot. An actual lab report. And we ship discreetly, because that shouldn't even be a selling point — it should be standard.

Got questions? Our support team responds within 24 hours. In English, German, and with actual chemistry knowledge.

4-Pro-MET stands for 4-Propionoxy-N-methyl-N-ethyltryptamine. It's a synthetic tryptamine derivative that acts as a prodrug. Once metabolized, the propionyl ester group gets cleaved, releasing 4-HO-MET (metocin) — that's the pharmacologically active compound.

Think of it like a key that only takes its final shape once it's inside the lock. That's basically what happens during metabolism.

Molecular formula: C₁₆H₂₂N₂O₂. Molar mass: 274.36 g/mol. Researchers value 4-Pro-MET for its predictable pharmacokinetics. Duration sits at roughly 5-8 hours, with onset at 20-60 minutes when taken orally.

As of April 2026, 4-Pro-MET isn't scheduled under Germany's BtMG or NpSG. The propionyloxy substitution doesn't fall under the defined structural features of the NpSG based on current legal interpretation. But laws change. Always check current regulations in your jurisdiction.