DMC

N,N-Dimethylcathinone (DMC), also known as metamfepramone, is a synthetic cathinone stimulant. It is the dimethylated analogue of cathinone, with two methyl groups attached to the amino nitrogen. The compound has a history of pharmaceutical use in some countries as an appetite suppressant, but it has also been investigated as a stimulant and appears in research on emerging cathinones.

Chemistry and history

DMC is a β-keto phenethylamine with a dimethylamino group attached to the alpha carbon. Unlike methcathinone and many familiar cathinones, it has a tertiary amine rather than a secondary N-methyl or N-ethyl group. Its alternative name, metamfepramone, is used in older pharmaceutical and pharmacological literature.

DMC should not be confused with dimethylone, which is a methylenedioxy-substituted cathinone and a chemically different compound.

Pharmacology

A study of designer cathinones examined DMC alongside 4-MEC, ethcathinone and other compounds. DMC acted as a non-releasing inhibitor of norepinephrine and dopamine uptake. In this respect, its profile resembled that of pyrovalerone-type cathinones more than that of cathinones that release monoamines through the transporters (Simmler and colleagues, 2014).

DMC’s activity across neurotransmitter systems is not fully explained by the available data. The study found that cathinones can differ substantially in their relative effects on dopamine, norepinephrine and serotonin transporters, even when their structures are closely related.

Reported effects and medical use

Older medical literature describes metamfepramone as a stimulant used in some countries for appetite suppression. However, there is limited modern clinical information on its subjective effects or on the risks associated with non-medical use. Its pharmacology suggests stimulant activity, but the available evidence does not support a detailed recreational effect profile.

Toxicity and research limitations

Clinical toxicology data specific to DMC are scarce. The 2014 transporter study provides laboratory evidence of dopamine and norepinephrine uptake inhibition, but it does not establish a human toxic range or the consequences of repeated exposure.

Its historical use as a pharmaceutical does not establish that non-medical exposure is safe. Information about dependence, withdrawal, long-term cardiovascular effects and interactions remains limited.

Related compounds

DMC is related to Cathinone, Methcathinone and other N-substituted cathinones. It is chemically distinct from Dimethylone and should not be confused with that methylenedioxy derivative.