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HS Code |
905238 |
| Productname | Sodium Salt Of 8-Bromoguanosine-3',5'-Cyclic Monophosphate |
| Casnumber | 37335-04-5 |
| Molecularformula | C10H10BrN5NaO7P |
| Molecularweight | 447.09 g/mol |
| Synonyms | 8-Br-cGMP sodium salt |
| Physicalform | Powder |
| Color | White to off-white |
| Solubility | Water soluble |
| Purity | Typically ≥98% |
| Storagetemperature | -20°C |
| Chemicalclass | Cyclic nucleotide |
| Smiles | C1=NC2=C(N1C3C(OPO(C3O)O)OC2=O)NBrN |
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Research always moves quickly in biochemistry. Scientists know how valuable well-characterized agents are for unmasking hidden steps in cell signaling. Sodium salt of 8-Bromoguanosine-3',5'-Cyclic Monophosphate sometimes called 8-Br-cGMP sodium salt, isn’t just another cyclic nucleotide. This compound allows for more direct manipulation of intracellular pathways, especially when tracking how cells interpret and respond to signals. Using a bromine-modified version, researchers get fresh insight into phosphorylation events, protein kinase regulation, and much more, all wrapped up in a molecule designed for stability and cell permeability.
The model most labs use carries a purity that suits analytical assays and cell-based protocols. Most vendors specify greater than 98 percent purity by HPLC, and solid state sodium salt ensures good solubility in water. This is crucial, since many biological tests can’t tolerate agents that precipitate or degrade under physiological conditions. In my own work, this used to be a recurring headache — traditional cGMP analogs often underperformed, giving murky results or requiring complex handling. The sodium salt of 8-Br-cGMP resists hydrolysis and operates cleanly in several mammalian cell lines and tissue preparations. The sodium form works well in buffer systems, making it adaptable for in vitro and ex vivo studies without unexpected interference.
What sets this 8-bromo variant apart shows up at the bench. The addition of bromine at the 8 position blocks phosphodiesterase attacks, a persistent obstacle with unmodified cGMP. That means researchers can finally test downstream effects with more predictable, sustained activation. Cyclic nucleotides often serve as signaling intermediates, so even small differences in breakdown rates alter the output of kinase and channel assays. I remember using unsubstituted cGMP in cardiac tissue assays — responses fell off so rapidly that real interpretation felt like guesswork. Moving to 8-Br-cGMP pushed these responses into a stable time window, letting us draw solid conclusions about phosphorylation cascades and contractility changes.
Every lab chases specificity, and with the sodium salt of 8-Br-cGMP, projects involving cGMP-dependent protein kinases (PKG), cyclic nucleotide-gated channels, or phosphodiesterase inhibitors gain a new layer of control. Substituting a bromine atom amplifies resistance to degradation, which matters in every experiment designed to tease apart fast cellular feedback. The molecule traverses cell membranes, a sticking point for many analogs. Once inside, it mimics the natural cyclic nucleotide yet lingers long enough for clear observations. Some labs use this to probe the limits of NO signaling; others depend on it to validate new small-molecule inhibitors. We used to juggle several analogs and conditions hoping to see consistent cGMP effects — switching to this sodium salt ended a stretch of ambiguous results. Suddenly, the intrinsic variation wound down, and patterns emerged that matched the controls.
On the technical side, investigators appreciate a model with a defined molar extinction coefficient at 253 nm, making quantitation by UV straightforward. The manageable molecular weight (typically reported around 451.1 g/mol as sodium salt) means no conversion is necessary for concentration calculations; pipetting becomes less error-prone. Solubility sits comfortably above traditional cGMP and its potassium analogs. This convenience might sound minor until you need to run a time-sensitive protein phosphorylation assay, where every minute between thawing and application matters. Standard preparation involves dissolving in water or buffered saline. Some protocols require rapid dilution right before use — doable here, thanks to both the physical stability and the absence of interfering excipients.
While most users think of sodium salt of 8-Br-cGMP mainly as a tool for cGMP-PKG studies, its reach extends further. Scientists pit it against endogenous cGMP in models of smooth muscle relaxation, synaptic plasticity, cardiac output, and photoreceptor adaptation. It shows up often in kinase selectivity screens, where precise activation makes or breaks a new therapeutic hypothesis. The compound has shed light on long-term potentiation in hippocampal cells and supports the study of cyclic nucleotide-gated channels in retina and olfactory tissues. My old colleagues in pharmacology leaned on this compound for rapid screens of vasodilatory compounds. They counted on its cell permeability and metabolic stability to deliver consistent responses, especially in tricky slice culture systems.
Comparing sodium salt of 8-Br-cGMP to other cGMP analogs highlights a few key improvements. Some cyclic nucleotide analogs stumble at the point of solubility or degrade quickly unless the environment is strictly controlled. Others require extra modification steps to cross cell membranes, leading to high background or inconsistent uptake. Products formulated as potassium or lithium salts introduce cation-related variability in some bioassays. This sodium form sidesteps that, supporting applications that require isotonic solutions or sensitive ionic environments. The substitution pattern also means it resists attack in both cell extracts and live tissues, so less is wasted to non-specific breakdown.
Anyone who’s prepared their share of kinase assays or cGMP-response studies knows the margin for error looms large. The sodium salt of 8-Br-cGMP tends to narrow that margin. Its predictable solubility and resistance to rapid hydrolysis mean less time troubleshooting protocol failures. Because the compound stores well at -20°C with minimal decomposition, stocks stay potent, and researchers avoid the repeated cost and time loss from degraded reagents. In crowded lab fridges everywhere, that matters more than it might seem. Light sensitivity remains, so wrapping containers in foil or using amber vials prevents photolysis and maintains reagent reliability over months, sometimes longer.
The importance of verified purity goes beyond peace of mind. Modern vendors often supply thorough documentation, and most labs appreciate a certificate of analysis with each batch. Analytical HPLC traces, NMR spectra, and sodium content measurements all play roles in confirming that the reagent won’t introduce surprise variables. This level of scrutiny matches growing expectations in high-impact research and peer review. When data hinge on subtle shifts in kinase lag time, or nuanced feedback in cyclic nucleotide signaling, reagent purity draws a clear line between artifact and genuine discovery.
Talking to colleagues across neuroscience, vascular pharmacology, and biochemistry, patterns emerge in how sodium salt of 8-Br-cGMP changes the workflow. Neurophysiologists quantify cyclic nucleotide effects on ion channels with better time courses. Vascular researchers swap it into organ bath setups, finding sharper dose-response curves without mysterious signal drop-offs partway through the protocol. Those crowding around a fluorescence microscope appreciate that results track tightly with expected cGMP analog responses, but last long enough for imaging sequences that would otherwise fade out. Every field draws their line of importance somewhere different, but reliable reagents have a way of uniting these varying priorities.
Even the best product won’t solve every hurdle, but shared experiences help others sidestep wasted cycles. For those running high-throughput screening, the sodium salt’s compatibility with automated liquid handlers and multiwell formats cuts down on error rates associated with precipitation or air bubbles. In single-cell recordings, some teams note that slight increases in external sodium concentration need attention for ionic balance. Simple tweaks in buffer preparation restore stability. Photostability poses a challenge under bright lights; working quickly and storing aliquots in the dark addresses this with little extra effort. Most buffers and media take up to 1 mM concentrations smoothly, especially within standard cell-based and slice preparations.
Many labs rotate multiple staff through shared reagent stocks, raising the risk of minor changes clouding big picture findings. With sodium salt of 8-Br-cGMP, lot-to-lot consistency and clean storage profiles take some guesswork out. Storing desiccated aliquots at reduced temperature, typically under nitrogen or argon if possible, further lowers degradation rates. Teams pursuing longitudinal projects over months depend on compounds that don’t shift in potency or solubility mid-experiment. This kind of background reliability forms a critical foundation for reproducibility, which journals and funding agencies increasingly demand.
No matter how advanced the chemistry, reagents that complicate life in the lab rarely stick around. Sodium salt of 8-Br-cGMP meets daily needs. It hydrates rapidly without persistent clumping, so graduate students and seasoned postdocs alike can prepare working stocks without delay. Filtration to clean out minor particulates follows routine. Teams new to cyclic nucleotide research can transition protocols — swapping out less stable analogs with basic adjustments in handling and dose. In my experience, training new hires on this product requires little more than quick instructions and a few reminders about light protection.
Across the community, informal forums and conference sessions often spark the best tweaks for making the most of sodium salt of 8-Br-cGMP. One group suggested a trick for prepping microgram-scale aliquots for patch clamp studies — slow evaporation under gentle nitrogen flow, then capping tightly for freezer storage. Others have explored using the compound in non-mammalian models, such as amphibian oocytes, where robust cGMP signaling drives rapid physiologic change. While biochemistry underpins progress, it’s these shared solutions that anchor real gains in reliable, repeatable science.
Research budgets rarely leave much room for luxury, so every new purchase competes against the reliability of what came before. In comparing price and purity, sodium salt of 8-Br-cGMP earns its keep. While the upfront cost trumps generic cGMP, the savings quickly appear in fewer failed experiments and cleaner, publishable figures. Weighing technical merit against time lost debugging ambiguous data, this reagent delivers a net gain. Colleagues have echoed these points at lab meetings: investing in high-grade cyclic nucleotides frees up weeks of repeat runs and keeps grant timelines on track.
Recent years have seen more suppliers improve batch consistency and volume options, letting both small academic labs and larger industry groups work from the same chemical foundation. As more protocols standardize around brominated analogs and sodium salt formulations, crossover studies grow easier. This widens the circle for collaborative networks and meta-analyses, relying on matchable baseline conditions. Some new fields, such as optogenetics and precision medicine, may only just be exploring the utility of robust, membrane-permeant cGMP mimics. Those running high-content screens or complex animal models depend on reagents whose identity and stability won’t shift between shipments or fiscal years.
The push for open science and reproducibility sets a higher bar for transparency around origin, handling, and validation. Sodium salt of 8-Br-cGMP aligns well with this shift. Reliable vendors publish batch certificates and impurity profiles, and traceability supports the kind of data-driven troubleshooting that brings coworker insights to life. Research integrity benefits from materials that meet established benchmarks and leave no room for hidden assumptions. This cultural shift in laboratory science discounts cutting corners on purity, storage, or handling — raising the role of carefully selected, well-validated reagents.
Those new to cGMP research often get pointed to sodium salt of 8-Br-cGMP after chasing down unclear results with more generic analogs. Connecting with experienced researchers speeds up the onboarding curve, as does leaning on supplier technical support for optimal working concentrations or handling advice. Community-driven forums sharing best practices play a part in keeping methods up to date. From field experience, small pilot runs frequently help identify the best buffer or temperature conditions before scaling up. This collaborative approach sets up both new and established labs for fewer false starts and faster data collection cycles.
Work with sodium salt of 8-Br-cGMP doesn’t just benefit familiar protein kinase and ion channel projects. A new generation of researchers applies this analog to emerging questions in signal crosstalk, gene expression regulation, and metabolic adaptation. As the complexity of biological questions deepens, streamlined reagents offer a throughline linking traditional pharmacology with molecular and systems biology approaches. The compound’s flexibility fits shifting needs, serving as a bridge across experimental designs and technological updates. From seasoned faculty leading decades-long inquiries to newcomers charting fresh territory, the value centers on dependability and proven performance in wide-ranging applications.
Trust in reagents often forms the backbone of scientific progress. Sodium salt of 8-Br-cGMP delivers this confidence by uniting purity, cell permeability, and chemical stability into a single product. Its specific molecular changes address long-standing challenges with degradation, solubility, and compatibility in both traditional and cutting-edge experimental systems. Insights from across fields confirm its role in reducing noise, improving data clarity, and shrinking uncertainty around experimental outcomes.
Investing in high-quality, thoroughly vetted materials pays lasting dividends — in reproducibility, cost efficiency, and speed of discovery. For any investigator focused on unraveling the details of cGMP signaling, pursuing new hypotheses in cell biology, or searching for more consistent pathway modulation, this compound stands out as a practical, trustworthy choice for today’s research environment.
