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What Is 5-amino-1MQ? A Research Overview of an NNMT Inhibitor
5-amino-1MQ is a small-molecule inhibitor of nicotinamide N-methyltransferase (NNMT) — a cytosolic enzyme that regulates cellular methylation and NAD+ metabolism. Although it is often listed alongside research peptides in laboratory catalogs, 5-amino-1MQ is a quinolinium compound, not a peptide. Its distinctive mechanism and its emerging role in metabolism research have made it a frequent subject of cell-culture and preclinical studies.
This overview covers what 5-amino-1MQ is, how it works at the biochemical level, what it is studied for, how it differs from related research compounds such as MOTS-c, and how research-grade material is verified and sourced.
5-amino-1MQ at a glance
| Property | Value |
| --- | --- |
| Name | 5-amino-1MQ (5-amino-1-methylquinolinium) |
| Class | Small-molecule NNMT inhibitor (quinolinium; not a peptide) |
| Target | Nicotinamide N-methyltransferase (NNMT, EC 2.1.1.1) |
| Mechanism | Competes with nicotinamide at the NNMT active site; reduces SAM-dependent N-methylation of pyridines |
| Appearance | Deep orange to amber solid |
| Solubility | Water-soluble (supplied as a salt) |
| Research areas | Adipocyte metabolism, cellular methylation, NAD+ biology |
| Typical fill | 50 mg per vial (research-grade) |
| Verification | Third-party COA — HPLC purity + ESI-MS identity — per lot |
What 5-amino-1MQ actually is (and why it isn't a peptide)
A common search — "5 amino 1mq peptide" — reflects a small but persistent confusion: 5-amino-1MQ is not a peptide. Peptides are short chains of amino acids linked by amide bonds. 5-amino-1MQ is a single, low-molecular-weight quinolinium molecule (a methylated quinoline ring with an amino substituent). It appears in peptide catalogs because it is sold to the same research audience and studied alongside metabolic peptides, but chemically it is a small molecule.
That distinction matters for laboratory work: small molecules and peptides differ in solubility, stability, analytical verification, and handling. Researchers should regard 5-amino-1MQ as a small-molecule inhibitor and rely on the lot Certificate of Analysis (COA) for the exact salt form, molecular formula, and weight.
How 5-amino-1MQ works: NNMT inhibition
NNMT (nicotinamide N-methyltransferase) is a cytosolic enzyme that transfers a methyl group from S-adenosylmethionine (SAM) to nicotinamide, producing 1-methylnicotinamide (1-MNAM) and S-adenosylhomocysteine (SAH). NNMT is expressed primarily in the liver and adipose tissue, and its activity influences two important cellular pools:
- The methylation pool — every methylation reaction consumes SAM and produces SAH. By consuming SAM, NNMT activity affects the SAM:SAH ratio, which in turn influences cellular methylation capacity.
- The NAD+ pool — nicotinamide is a NAD+ precursor. When NNMT methylates nicotinamide, it converts it into 1-MNAM, changing the availability of nicotinamide for NAD+ biosynthesis.
5-amino-1MQ is a nicotinamide-competitive inhibitor of NNMT. By occupying the nicotinamide binding site, it reduces NNMT's methylation of nicotinamide in cell-free and cell-based assays. In research models, the downstream effect is a change in the methylation pool (more SAM preserved) and the NAD+ metabolite profile (less 1-MNAM produced). This dual action on methylation and NAD+ metabolism is the core of why 5-amino-1MQ is studied in metabolic biochemistry.
What 5-amino-1MQ is studied for
In published cell-culture and preclinical research, 5-amino-1MQ and other NNMT inhibitors are studied in several areas:
- Adipocyte metabolism and methylation. NNMT is highly expressed in adipose tissue. Research in adipocyte cell models and animal models studies how reducing NNMT activity changes methylation patterns, gene expression, and cellular energy balance in fat cells. These are biochemical studies of adipocyte biology, not efficacy claims.
- Cellular methylation balance. Because NNMT consumes SAM, inhibiting it changes the SAM:SAH ratio. Researchers use 5-amino-1MQ as a tool to study how methylation capacity affects cellular processes.
- NAD+ metabolism. By conserving nicotinamide, NNMT inhibition is studied for its effect on NAD+ biosynthesis and related metabolites.
- Cancer cell metabolism. NNMT is overexpressed in several cancer types, where it is studied as a metabolic enzyme and research biomarker; 5-amino-1MQ is used as a chemical probe in those cell-culture models.
5-amino-1MQ offered here is a research chemical for laboratory use only. Not for use in humans or animals.
MOTS-c vs 5-amino-1MQ — how they differ
Both MOTS-c and 5-amino-1MQ appear in metabolism research, but they are fundamentally different kinds of molecules with different mechanisms:
| | MOTS-c | 5-amino-1MQ |
| --- | --- | --- |
| Type | Mitochondrial-derived peptide (16 amino acids) | Small molecule (quinolinium) |
| Origin | Encoded in the mitochondrial genome | Synthetic chemical compound |
| Primary research mechanism | AMPK / mitochondrial signaling | NNMT inhibition (SAM / NAD+ metabolism) |
| Research area | Metabolic signaling, mitochondrial stress | Adipocyte methylation, NAD+ biology |
In short: MOTS-c is a signaling peptide studied for how it participates in cellular energy-sensing pathways; 5-amino-1MQ is an enzyme inhibitor studied for how it changes methylation and NAD+ metabolism. Researchers sometimes compare the two because both touch metabolism, but the mechanisms are distinct. For a deeper look at the peptide side, see our MOTS-c research overview, and for related NAD+ biochemistry, our NAD research overview.
Observations reported in research
Searches for "5-amino-1mq side effects" are common, so it is worth stating clearly what the published research does and does not show. In cell-culture and preclinical models, researchers have reported observations consistent with NNMT inhibition — changes in methylation markers, shifts in NAD+ metabolites, and altered adipocyte gene expression. These are laboratory observations in model systems.
What the published literature does not establish is a controlled safety profile in humans. Research-grade 5-amino-1MQ is sold for in-vitro laboratory research, and no application in living organisms is supported or intended. Researchers should regard informal accounts skeptically and consult primary literature and the lot COA.
Why is 5-amino-1MQ orange?
One of the most distinctive things about 5-amino-1MQ is its deep orange to amber color — and it is a frequent question ("why is 5 amino 1mq orange"). The color is a normal property of the molecule, not a sign of contamination or degradation. The 5-aminoquinolinium structure is a conjugated aromatic system that absorbs light in the blue-violet region of the spectrum, so the transmitted and reflected light appears orange. Reputable suppliers expect this color; a sample that is pale or off-white may warrant a second look against the lot COA.
Half-life and pharmacokinetics in research
Pharmacokinetic values such as half-life for 5-amino-1MQ are not established for research-grade material and are not prescriptive for laboratory use. Published preclinical values vary by model and route and are not directly transferable between laboratories. Some preclinical reports describe oral bioavailability in animal models; researchers should regard these as research observations and consult primary literature for specifics rather than as laboratory-use guidance.
Human clinical trials of 5-amino-1MQ
Published research on 5-amino-1MQ is predominantly preclinical — cell-culture and animal models. Human clinical trials of 5-amino-1MQ specifically are limited; researchers should consult ClinicalTrials.gov and the primary literature for the current status. Much of what is known about NNMT in human biology comes from expression and metabolite epidemiology rather than interventional 5-amino-1MQ trials. This is normal for an emerging research compound and is one reason material is sold strictly for laboratory research.
How research-grade 5-amino-1MQ is verified
Every batch from a credible US supplier should arrive with a third-party Certificate of Analysis (COA) for that exact lot. Peptide Technologies publishes a COA on every batch and ties it to a QR code on the vial. For 5-amino-1MQ, a complete COA reports:
- Identity — mass spectrometry (ESI-MS) confirming the observed mass matches the theoretical mass of the target molecule.
- Purity — reverse-phase HPLC, reported as percent peak area (typically at 220 nm). Research-grade material is typically ≥99% pure.
- Residual solvents and counterion — confirming the salt form and that residual solvents are within laboratory limits.
For more on reading a COA, see our Certificate of Analysis guide.
Storage and handling for research
5-amino-1MQ ships as a solid. For research stability, store it at −20 °C, protected from light and moisture, in its sealed vial until use. Reconstitute in an appropriate research-grade solvent per your validated laboratory protocol, and refer to the lot COA for any lot-specific notes. Avoid repeated freeze-thaw of the reconstituted material. This is general handling guidance for research-grade material; specific laboratory protocols are the responsibility of the researcher.
Where to buy research-grade 5-amino-1MQ
When sourcing 5-amino-1MQ for laboratory research, researchers should verify:
- Purity and identity — a third-party COA with HPLC purity and ESI-MS identity for the exact lot.
- US supplier with batch-level testing — third-party verification, not in-house-only claims.
- Lot traceability — a lot number on the vial that matches the published COA.
Peptide Technologies supplies research-grade 5-amino-1MQ at ≥99% purity with a third-party COA on every lot. See 5-amino-1MQ 50mg and 5-amino-1MQ capsules. For broader sourcing guidance, see our where to buy research peptides guide and our US research-peptide suppliers overview.
FAQ
What is 5-amino-1MQ?
5-amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule inhibitor of nicotinamide N-methyltransferase (NNMT), a cytosolic enzyme that regulates cellular methylation and NAD+ metabolism. It is a quinolinium compound, not a peptide, though it is often grouped with research peptides in laboratory catalogs.
What does 5-amino-1MQ do, and how does it work?
5-amino-1MQ competes with nicotinamide at the NNMT active site, reducing NNMT's SAM-dependent methylation of nicotinamide. In research models this changes the methylation pool (the SAM:SAH ratio) and the NAD+ metabolite profile. It is studied as a biochemical tool in cell-culture and preclinical models.
What is 5-amino-1MQ used for in research?
5-amino-1MQ is studied in adipocyte metabolism and methylation, cellular methylation balance, NAD+ metabolism, and cancer cell metabolism research. It is sold strictly for in-vitro laboratory research and is not for use in humans or animals.
Why is 5-amino-1MQ orange?
The orange-to-amber color is a normal property of the 5-aminoquinolinium molecule. Its conjugated aromatic structure absorbs light in the blue-violet region, so the material appears orange. It is not a sign of contamination or degradation.
Has 5-amino-1MQ been studied in human clinical trials?
Published research on 5-amino-1MQ is predominantly preclinical — cell-culture and animal models. Human clinical trials of 5-amino-1MQ specifically are limited; researchers should consult ClinicalTrials.gov and primary literature for the current status. Much of what is known about NNMT in humans comes from expression and metabolite epidemiology.
Where can researchers buy 5-amino-1MQ?
Research-grade 5-amino-1MQ is available from Peptide Technologies at ≥99% purity with a third-party COA on every lot: 5-amino-1MQ 50mg and 5-amino-1MQ capsules. Verify any supplier against a lot-specific COA with HPLC purity and ESI-MS identity.