Sourcing high-purity Nicotinamide Adenine Dinucleotide (NAD+) at the 500mg mass specification requires rigorous verification of identity, sequence purity, and low endotoxin levels. PX1 Research supplies standardized, research-grade NAD+ 500mg supported by lot-specific analytical documentation to advance preclinical metabolic, enzymatic, and cellular survival studies.
Sourcing high-purity Nicotinamide Adenine Dinucleotide (NAD+) at the 500mg mass specification requires rigorous verification of identity, sequence purity, and low endotoxin levels. PX1 Research supplies standardized, research-grade NAD+ 500mg supported by lot-specific analytical documentation to advance preclinical metabolic, enzymatic, and cellular survival studies.
To buy NAD+ 500mg for laboratory research, investigators must select supplier facilities providing batch-specific HPLC and mass spectrometry certificates of analysis. Research-grade NAD+ 500mg provides a standardized quantity of beta-nicotinamide adenine dinucleotide for evaluating mitochondrial electron transport, sirtuin enzyme kinetics, and cellular energy pathways in validated in vitro and preclinical models.
When acquiring NAD+ 500mg for experimental designs, selecting a vendor that adheres to high-purity standards is critical. Analytical discrepancies or trace organic impurities can introduce confounding variables in enzymatic assays and cell culture models. PX1 Research maintains complete batch traceability, offering high-grade compounds across our catalog of research peptides and essential coenzymes to support reproducible scientific discovery.
Nicotinamide Adenine Dinucleotide (NAD+) is an essential pyridine nucleotide coenzyme found in all living cells. Chemically designated as $\text{C}_{21}\text{H}_{27}\text{N}_{7}\text{O}_{14}\text{P}_{2}$, the molecule exists in two distinct forms: oxidized (NAD+) and reduced (NADH). The dynamic ratio of $\text{NAD}^+/\text{NADH}$ serves as a primary indicator of cellular redox status and drives metabolic flux through glycolysis, the tricarboxylic acid (TCA) cycle, and oxidative phosphorylation within the mitochondrial matrix.
Beyond its classical role as an electron carrier in redox reactions, NAD+ functions as an obligate substrate for several classes of regulatory enzymes. These include the sirtuin family of protein deacetylases (SIRT1–SIRT7), poly(ADP-ribose) polymerases (PARP1, PARP2), and cyclic ADP-ribose synthases (CD38, CD157). Through these enzymatic interactions, NAD+ availability modulates genomic stability, chromatin remodeling, mitochondrial biogenesis, and inflammatory signaling pathways. Investigating these regulatory cascades requires highly pure substrate preparations, as detailed in our analysis of NAD+ mitochondrial mechanisms.
In vitro and preclinical rodent studies demonstrate that intracellular NAD+ pools undergo significant depletion during physiological stress, oxidative challenge, and senescence models. Preclinical studies suggest that restoring or elevating intracellular NAD+ levels supports mitochondrial respiration rate, enhances oxygen consumption capacity, and promotes the expression of nuclear-encoded mitochondrial proteins via SIRT1 activation.
Furthermore, animal models evaluating metabolic homeostasis indicate that optimal NAD+ availability mitigates high-fat diet-induced metabolic dysfunction. In rodent models of microvascular integrity, elevated NAD+ substrate concentrations supported capillary density and endothelial function through sirtuin-dependent pathways. In vitro data indicate that PARP enzymes consume substantial quantities of NAD+ during DNA damage responses, creating a competitive dynamic between genomic maintenance and sirtuin-mediated metabolic regulation.
In experimental models evaluating mitochondrial function and metabolic signaling, researchers frequently compare direct NAD+ administration against key biosynthetic precursors and peptide regulators. Understanding the operational differences between these molecules ensures proper model selection.
Direct application of NAD+ 500mg allows researchers to directly evaluate extracellular nucleotide receptor activity or cell-free enzymatic reactions. In contrast, the precursor NMN (Nicotinamide Mononucleotide) is frequently utilized to study intracellular transport mechanisms across cellular membranes via specific transporters like Slc12a8. When targeting mitochondrial gene expression directly, mitochondrial-derived peptides like MOTS-c alter metabolic homeostasis through nuclear translocation, while cardiolipin-targeted peptides such as SS-31 optimize electron transport chain efficiency without acting as a direct coenzyme substrate.
Research-grade NAD+ 500mg is supplied as a lyophilized powder to maximize shelf stability. For laboratory assays, proper reconstitution protocols must be followed to maintain chemical integrity and prevent premature hydrolysis of the dinucleotide pyrophosphate bond.
NAD+ is highly soluble in aqueous media, including sterile laboratory-grade water, phosphate-buffered saline (PBS, pH 7.4), and standard culture media. For long-term cell culture or enzymatic assays requiring sterile handling, researchers often reconstitute the 500mg vial using sterile bacteriostatic water or buffer solutions. Because NAD+ solutions can undergo slow spontaneous hydrolysis in neutral to alkaline solutions at room temperature, stock solutions should be prepared in slightly acidic to neutral pH buffers (pH 6.0–7.2), aliquoted, and immediately stored at low temperatures.
Ensuring data integrity in cell biology and animal models requires verified, high-purity reagents. Low-grade chemical preparations containing degradation products such as free nicotinamide can act as potent inhibitors of sirtuin enzymes, inadvertently invalidating experimental controls.
PX1 Research enforces strict quality control parameters for every batch of NAD+ 500mg. Every lot undergoes rigorous testing in ISO 17025 accredited analytical laboratories located in the USA. Purity is confirmed to exceed industry standards using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC), while accurate molecular mass and identity are validated via Electrospray Ionization Mass Spectrometry (ESI-MS). Furthermore, endotoxin levels are measured via Limulus Amebocyte Lysate (LAL) testing to ensure levels remain below strict limits (<0.01 EU/mg), preventing non-specific inflammatory responses in cellular cultures. Comprehensive batch-specific analytical documentation can be reviewed in our PX1 Research Library.
Proper storage of lyophilized and reconstituted NAD+ 500mg is essential to prevent thermal degradation and hygroscopic moisture absorption. Upon receipt, unopened lyophilized vials should be kept in a desiccated environment at -20°C for long-term storage, or -80°C for extended stability over 12 months.
Once reconstituted, aqueous stock solutions of NAD+ should be divided into single-use experimental aliquots to eliminate freeze-thaw cycles, which accelerate nucleotide bond cleavage. Reconstituted aliquots stored at -80°C remain stable for several months, while working solutions kept at 4°C should be utilized within 24 to 48 hours to prevent enzymatic or non-enzymatic degradation.
PX1 Research operates dedicated manufacturing and fulfillment hubs out of California and Arizona, providing rapid dispatch for research institutions and commercial laboratories across the United States. Orders placed Monday through Friday before cut-off times qualify for same-day shipping, ensuring temperature-sensitive compounds arrive without compromising functional integrity.
For high-throughput screening, multi-animal preclinical trials, or longitudinal research projects requiring consistent material across extended timelines, institutional accounts can secure bulk quantities through our wholesale laboratory program. Every shipment includes lot-matched Certificates of Analysis, ensuring full compliance with institutional audit requirements and protocol standardization.
What is the primary specification of the NAD+ 500mg vial?
The NAD+ 500mg vial contains 500 milligrams of highly purified, lyophilized beta-nicotinamide adenine dinucleotide powder, intended strictly for laboratory analytical, cell culture, or preclinical research applications.
How is the purity of PX1 Research NAD+ 500mg verified?
Every lot of NAD+ 500mg undergoes analytical validation using RP-HPLC to verify chemical purity (>98%) and ESI-Mass Spectrometry to confirm molecular weight. Every batch is tested in ISO 17025 accredited laboratories.
What are the recommended reconstitution buffers for NAD+ 500mg?
NAD+ 500mg can be dissolved in sterile lab-grade water, phosphate-buffered saline (PBS), or sterile bacteriostatic water. A slightly acidic to neutral pH (6.0–7.2) is recommended to maximize aqueous stability.
Why is low endotoxin testing critical for NAD+ research?
Bacterial endotoxins (LPS) cause acute inflammatory activation in immune cells and tissue cultures, which can mask or distort experimental outcomes related to sirtuin activation, metabolic flux, or mitochondrial respiration.
How should reconstituted NAD+ stock solutions be stored?
Reconstituted NAD+ solutions should be aliquoted into single-use laboratory tubes and stored at -80°C to prevent hydrolysis. Repeated freeze-thaw cycles must be avoided.
How does NAD+ differ from NMN in preclinical models?
NAD+ is the active coenzyme substrate for sirtuins and PARPs, whereas NMN (Nicotinamide Mononucleotide) is a precursor molecule that requires intracellular conversion via NMNAT enzymes to form NAD+.
Does PX1 Research provide lot-specific Certificates of Analysis (COA)?
Yes. Every shipment of NAD+ 500mg is tied to a lot-specific COA detailing HPLC purity profiles, mass spec verification, and LAL endotoxin assay results.
Are PX1 Research compounds approved for human administration?
No. All products supplied by PX1 Research, including NAD+ 500mg, are manufactured and labeled strictly for in vitro, laboratory, and preclinical research use only. They are not for therapeutic, diagnostic, or human consumption.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.