What is 3-MMC? A Complete Research Guide
3-MMC (3-Methylmethcathinone, also known as 3-Methylmephedrone) is a synthetic cathinone compound that has become the most widely studied cathinone reference standard following the scheduling of 4-MMC (mephedrone) across the EU. It is used extensively in forensic toxicology, neurochemistry, and pharmacological research.
What is 3-MMC Chemically?
3-MMC belongs to the beta-keto phenethylamine class — specifically the substituted cathinone family. Its IUPAC name is (RS)-1-(3-methylphenyl)-2-(methylamino)propan-1-one. The key structural feature is a methyl group at the 3-position of the aromatic ring (meta position), distinguishing it from 4-MMC (para-methylmephedrone) and 2-MMC (ortho-methylmephedrone).
Molecular formula: C₁₁H₁₅NO
Molecular weight: 177.24 g/mol
CAS number: 1246816-62-5
Melting point: 185–187°C (hydrochloride salt)
Mechanism of Action
3-MMC acts as a substrate-type releasing agent and reuptake inhibitor at monoamine transporters — primarily dopamine (DAT), noradrenaline (NET), and serotonin (SERT). Its pharmacological profile is broadly comparable to 4-MMC/mephedrone, though with quantitative differences in transporter selectivity.
In vitro transporter assays (radioligand binding, neurotransmitter uptake inhibition) show that 3-MMC has higher potency at DAT and NET relative to SERT compared to classical MDMA, placing it pharmacologically closer to amphetamine-type stimulants than to entactogens. The exact Ki values vary across studies and experimental conditions.
Research Applications
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Forensic Toxicology: 3-MMC is one of the most frequently detected cathinones in forensic biological samples across the EU. Reference standards are essential for HPLC-UV, GC-MS, and LC-MS/MS method development and validation.
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Structure-Activity Relationship (SAR) Studies: Comparing 3-MMC with positional isomers (2-MMC, 4-MMC) and halogenated analogs (3-CMC, 4-CMC) provides mechanistic insight into how aromatic substitution patterns affect monoamine transporter selectivity.
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Biotransformation Research: 3-MMC undergoes extensive phase I (ring hydroxylation, N-demethylation, beta-keto reduction) and phase II (glucuronidation, sulfation) metabolism. Identifying and characterizing metabolites requires high-purity reference compounds.
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Wastewater Epidemiology: 3-MMC is a target analyte in European wastewater monitoring programs (EMCDDA) used to estimate population-level drug use patterns.
Analytical Properties
3-MMC is commercially available as a hydrochloride salt (HCl) or as freebase. The HCl salt is white crystalline powder with good water solubility. Key analytical parameters for HPLC work:
- • UV absorption maximum: ~265 nm (aromatic chromophore)
- • Stable in solution at acidic pH (<4) for extended periods
- • GC-MS: characteristic fragments at m/z 58 (base peak), 77, 91, 105
- • Chiral center at C-2; available as racemate in standard research grade
3-MMC vs 4-MMC vs 3-CMC
| Property | 3-MMC | 4-MMC | 3-CMC |
|---|---|---|---|
| Substituent | 3-CH₃ | 4-CH₃ | 3-Cl |
| Primary action | DAT/NET/SERT | DAT/NET/SERT | DAT/NET/SERT |
| MW (HCl) | 213.7 g/mol | 213.7 g/mol | 234.1 g/mol |
| EU status | NpSG (DE) | Controlled | NpSG (DE) |
Where to Buy 3-MMC for Research
For research use, HPLC-verified purity and Certificate of Analysis are non-negotiable. Best Chems supplies 3-MMC in crystal and powder form (1g–50g), independently tested to ≥99% purity with full CoA. Ships from EU warehouse with same-day dispatch.