5-Amino-1MQ

NNMT (Nicotinamide N-methyltransferase) is an enzyme that methylates nicotinamide (the B3 vitamin form) using S-adenosylmethionine (SAM) as methyl donor, producing 1-methylnicotinamide (1-MNA) and S-adenosylhomocysteine (SAH). The reaction consumes both nicotinamide and SAM, two metabolites with separate downstream roles in NAD+ salvage and methylation-cycle balance respectively. NNMT expression is elevated in white adipose tissue of obese subjects, suggesting that NNMT activity is part of the metabolic-dysfunction phenotype. Inhibiting NNMT pharmacologically (with 5-Amino-1MQ) shifts the nicotinamide pool back toward NAD+ salvage and preserves the SAM pool for methylation-cycle reactions, both effects are mechanistically reasonable hypotheses for the observed adipocyte-metabolism research readouts.

5-Amino-1MQ is a quinolinium cation that requires an anion counter-ion for stable solid-state isolation. The iodide salt (5-Amino-1MQ·I⁻) is the most commonly published research-grade form and is what most cited mechanistic studies have used. Alternative counter-ions (bromide, mesylate, sulfate) exist in chemistry catalogs and produce the same cation in solution, but the solid-state behavior, hygroscopicity, and storage stability differ, and some published data is tied specifically to the iodide form. Buyers replicating published protocols should confirm the iodide form on the COA; for novel research, alternative counter-ions are generally acceptable but should be noted in the methods section.

Published mechanistic studies of 5-Amino-1MQ typically use cellular working concentrations in the 1-100 μM range for NNMT inhibition readouts in adipocyte and hepatocyte cell-culture systems. Below 1 μM, the inhibition is sub-saturating and the readouts are noisy; above 100 μM, off-target effects on related methyltransferases begin to confound interpretation. For dose-response curves the typical experimental design uses a 7-point dilution from 0.3 μM to 300 μM with half-log spacing. The molecule's stability in DMSO stock solution is high (months at -20 °C); diluted working solutions in aqueous media should be prepared fresh for each experiment because the quinolinium cation can hydrolyze slowly at neutral pH.

5-Amino-1MQ is mechanistically complementary to direct NAD+ supplementation and to NAD+ precursor supplementation (NMN, NR). Where NAD+ and its precursors add to the nicotinamide pool from the supply side, 5-Amino-1MQ reduces the loss of nicotinamide to NNMT-mediated methylation from the demand side. The combined research strategy of supplementing precursors while inhibiting NNMT is conceptually well-defined, though comparative head-to-head data is still emerging. Buyers building longevity-research protocols often source 5-Amino-1MQ alongside NAD+ and the precursor compounds; PeptideXpo's catalog covers NAD+, 5-Amino-1MQ, and (on request through OEM) NMN and NR.