4-Pro-MET vs 4-AcO-DMT
MET vs DMT Series – Different N-Substitutions, Different Experiences
To prodrugs fra forskellige tryptaminfamilier: 4-Pro-MET omdannes til 4-HO-MET (Metocin), 4-AcO-DMT (Psilacetin) til psilocin (4-HO-DMT). Det, der gør denne sammenligning særlig, er at to parametre ændres samtidig: estergruppen (propionyloxy vs. acetyloxy) og N-substitutionen (N-Me-N-Et vs. N,N-DiMe). Hvad betyder det konkret for forskningen? Denne artikel sammenligner systematisk kemi, farmakokinetik og virkningsprofiler.
Indholdsfortegnelse
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4-Pro-MET vs. 4-AcO-DMT: Direkte sammenligning
|
4-Pro-MET
Empfohlen |
4-AcO-DMT (Psilacetin) | |
|---|---|---|
| Active Metabolite | 4-HO-MET (metocin) | Psilocin (4-HO-DMT) |
| Ester Group | Propionyloxy (C3) | Acetyloxy (C2) |
| Visual Character | Sharp, geometric, saturated | Organic, flowing, natural |
| Headspace | Clear, playful, social | Deep, introspective, emotional |
| Body Load | Low | Low-moderate |
Anders end ved sammenligninger inden for samme familie (f.eks. 4-Pro-MET vs. 4-AcO-MET) fører prodrugsene her til forskellige aktive metabolitter. 4-Pro-MET omdannes til 4-HO-MET, 4-AcO-DMT til psilocin. Begge er 5-HT2A-agonister – men med forskellige bindingsprofiler og subjektive virkningskarakterer.
4-Pro-MET – 4-HO-MET (Metocin)
- Sumformel: C15H20N2O2 (274,4 g/mol)
- Ester: Propionyloxy (3 C i acylresten)
- N-substitution: N-methyl-N-ethyl (asymmetrisk)
- Aktiv metabolit: 4-HO-MET – Ki = 177 nM (5-HT2A), Ki = 12 nM (5-HT2B), Ki = 135 nM (5-HT2A) iflg. Glatfelter et al. 2023
4-AcO-DMT – Psilocin (4-HO-DMT)
- Sumformel: C15H20N2O2 (246,3 g/mol)
- Ester: Acetyloxy (2 C i acylresten)
- N-substitution: N,N-dimethyl (symmetrisk)
- Aktiv metabolit: Psilocin – velkarakteriseret, 5-HT2A EC50 ~6–60 nM
I medicinalchemien kaldes dette en 'two-parameter variation'. Begge parametre – ester og N-substitution – ændres samtidigt. Det har en konsekvens: Effektforskelle kan ikke entydigt tilskrives ét enkelt strukturelt træk. Ved sammenligninger, hvor kun én parameter varierer (som 4-Pro-MET vs. 4-AcO-MET, hvor kun esteren adskiller sig), er dette enklere.
The core pharmacological distinction sits at the nitrogen. 4-HO-MET carries asymmetric N-methyl-N-ethyl groups; psilocin has symmetric N,N-dimethyl groups. One structural difference. Measurably different receptor binding dynamics. Consistently different subjective reports.
MET-series metabolites (like 4-HO-MET) reliably produce what users call a "clearer headspace" – ego function stays more intact, social interaction feels easier, and the whole experience runs lighter and more playful. DMT-series metabolites (like psilocin) pull in a different direction: deeper introspection, stronger ego dissolution at equivalent doses, more emotionally intense sessions. Both produce visuals, but the character splits. MET-series: sharp geometric patterns with "artificial" color saturation. DMT-series: organic and flowing.
MET-derivater er asymmetriske ved kvælstoffet. DMT-derivater symmetriske. Det lyder som en fodnote i en kemiLærebog – men har konsekvenser. Den yderligere methylengruppe (CH3) på ethylresten øger lipofilitet og ændrer den steriske geometri ved kvælstoffet. Og det påvirker receptorbinding.
Virkningsprofilforskelle iflg. community
På Reddit r/researchchemicals, PsychonautWiki og Bluelight tegner der sig konsistente forskelle:
- 4-HO-MET (MET-familie): Klart headspace, intense geometriske visuals, lav body load, legende og humoristisk, mindre ego-opløsning – 'mere visuelt intenst end psilocin'
- Psilocin (DMT-familie): Dybere introspektivt headspace, organisk flydende visuals, moderat body load, stærkere ego-opløsning, spirituel kvalitet
Shulgin skrev selv i TiHKAL: 4-HO-MET er 'kvalitativt meget lig psilocin' – sandsynligvis ikke til at skelne i blindtest. Men community-rapporter indikerer, at forskellene bliver tydeligere ved højere doser. MET-varianten bevarer mere kognitiv klarhed. DMT-varianten går dybere i introspekion og emotionel dybde.
The ester groups add another layer. 4-Pro-MET's propionyloxy (C3) ester is one carbon longer than 4-AcO-DMT's acetyloxy (C2) ester. That affects onset: the longer propionyloxy ester hydrolyzes more slowly, likely contributing to 4-Pro-MET's reported 20-60 minute onset versus 4-AcO-DMT's 20-40 minutes. And the propionyloxy group provides marginally better storage stability through increased steric protection of the ester bond.
Then there's the legal picture. 4-AcO-DMT was added to BtMG Anlage I in Germany in 2022. 4-Pro-MET remains unscheduled as of April 2026. So researchers choosing between these compounds need to weigh both the experiential profile difference and the legal landscape.
Juridisk meddelelse
Dies ist ein Beispiel-Infotext. Hier können Sie wichtige Hinweise für Ihre Leser hinterlegen.
4-Pro-MET – Legal Research Alternative
Not BtMG-scheduled – Lab-tested – EU shipping
FAQ: 4-Pro-MET vs 4-AcO-DMT
Both produce visual effects, but the character differs. 4-Pro-MET (via 4-HO-MET) tends toward sharp geometric patterns with saturated colors. 4-AcO-DMT (via psilocin) produces more organic, flowing visuals. Many community researchers consider the MET-series more 'visual' relative to its cognitive intensity.
4-AcO-DMT consistently produces a deeper, more introspective headspace with stronger ego dissolution, closely resembling psilocybin mushrooms. 4-Pro-MET maintains a clearer, more social, and playful cognitive state with greater ego preservation.
No. 4-AcO-DMT was added to BtMG Anlage I in Germany in 2022. 4-Pro-MET remains unscheduled as of April 2026, making it one of the available legal research alternatives.
Yes. Both active metabolites (4-HO-MET and psilocin) are 5-HT2A agonists, so using either produces cross-tolerance to the other and to all other serotonergic psychedelics for approximately 7-14 days.
4-AcO-DMT has marginally faster onset (20-40 min) compared to 4-Pro-MET (20-60 min), likely because its shorter acetyloxy ester hydrolyzes faster than the propionyloxy ester. Both are significantly slower than their direct-acting hydroxyl metabolites.
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