MET Fumarate

Introduction

MET fumarate is the fumaric acid salt of N-methyl-N-ethyltryptamine (MET), also named N-ethyl-2-(1H-indol-3-yl)-N-methylethanamine. The free base is an unsubstituted indole tryptamine with one methyl and one ethyl group on the side-chain nitrogen. It is the N-ethyl homologue of N-methyltryptamine and sits between N,N-dimethyltryptamine (DMT) and N,N-diethyltryptamine (DET).

The fumarate is supplied as a crystalline powder for work that needs a weighable solid: reference standards, chromatographic method development, and comparative studies of short-chain dialkyltryptamines. MET was described by Alexander Shulgin in TiHKAL. Published human pharmacology and toxicity data remain limited. This material is not a medicine, supplement, or diagnostic reagent.

Key features and benefits – Buy MET Fumarate

• Simple dialkyltryptamine scaffold. The N-methyl-N-ethyl pattern is a clean comparator for DMT, DET, and ring-substituted analogues such as 4-HO-MET and 5-MeO-MET.
• Fumarate salt. Fumarate is a common crystalline form for tryptamine reference materials and is generally easier to weigh and store than the free base. Confirm 1:1 versus other stoichiometry on the certificate of analysis.
• Documented parent identity. Free base CAS 5599-69-9, PubChem CID 824845, formula C13H18N2.
• Batch documentation. Identity and purity should be supported by HPLC and NMR, with mass spectrometry where available.
• Laboratory-only handling. Intended for controlled chemical and in vitro work, not for formulation or human administration.

Specifications of Buy MET Fumarate

Applications in research

Appropriate uses are non-clinical and institutionally approved:

• Analytical reference material for HPLC, LC-MS, GC-MS, and NMR method development.
• Forensic and chemical identification of MET versus DMT, DET, and ring-substituted MET analogues.
• In vitro serotonin-receptor binding or metabolism assays where the protocol and ethics approval explicitly cover this substance.
• Impurity profiling and salt-form comparison (fumarate versus oxalate or hydrochloride).
• Stability studies of dialkyltryptamine salts under controlled storage.

Do not describe or imply vaporization, ingestion, or any other human route.

Purity and testing

A defensible product claim rests on the batch certificate, not on a generic percentage.

• HPLC for chromatographic purity against a stated method.
• 1H NMR (and 13C NMR where available) for the indole, N-methyl, and N-ethyl signals, plus the fumarate alkene near 6.6 ppm.
• Mass spectrometry for the free-base molecular ion consistent with C13H18N2.
• Confirmation that the counter-ion is fumarate, not oxalate or hydrochloride.
• Residual solvent and inorganic limits if the supplier states them.
• Salt stoichiometry by titration, elemental analysis, or NMR integration, because the ratio changes the effective formula weight.

Store the COA with the lot number. Do not copy a purity figure from another vendor’s listing.

Disclaimer

For laboratory research use only. Not for human or veterinary consumption, not for diagnostic or therapeutic use, and not a food, drug, or cosmetic. MET may be regulated as a controlled substance, analogue, or novel psychoactive substance depending on jurisdiction. Buyers are responsible for confirming legality, licensing, import rules, and institutional approval before ordering or handling. Handle with standard laboratory PPE in a ventilated area and dispose of waste under local hazardous-chemical rules. No statement on this page is a claim of safety, efficacy, or fitness for any human application.

Frequently asked questions

What is MET fumarate?
It is the fumaric acid salt of N-methyl-N-ethyltryptamine. The free base has one methyl and one ethyl group on the side-chain nitrogen and an unsubstituted indole.

Is this the same as DMT or 4-HO-MET?
No. DMT is N,N-dimethyltryptamine. 4-HO-MET has a hydroxy group at the indole 4-position. MET is the unsubstituted N-methyl-N-ethyl parent. They must be identified separately.

What purity is supplied?
Only the figure on the lot COA. A page-level claim such as ≥98% by HPLC should match the analytical method actually used for that batch.

Which CAS number applies?
The free base is CAS 5599-69-9. The oxalate has a different CAS (5599-47-3) and must not be used for the fumarate. If a salt CAS is printed, it should be checked against the COA.

How should it be stored?
Sealed, cool, dry, and protected from light. Limit air and moisture exposure after opening, and record the lot number with the COA.

Can it be used in humans?
No. It is not approved as a medicine and is not sold for consumption. Legal status varies; check local law before purchase.

What analytical methods confirm identity?
HPLC purity, NMR for the N-methyl, N-ethyl, and fumarate signals, and mass spectrometry consistent with C13H18N2. Salt ratio should be stated on the COA so formula weight is not assumed.