Buy NSI-189 Free Base – Solution Research Chemical Online – USA, Europe and Worldwide

Welcome to RChems EU – your trusted global supplier of premium research chemicals. We are proud to present NSI-189 Free Base – Solution, a high-purity, ready-to-use liquid formulation of the investigational neurogenic compound NSI-189. Originally developed by Neuralstem, Inc., NSI-189 has attracted significant research interest for its potential to stimulate hippocampal neurogenesis and enhance neuroplasticity. Unlike powder formulations that require gravimetric preparation and dissolution optimization, our NSI-189 Free Base – Solution eliminates variability associated with weighing and solubility testing, allowing researchers to proceed directly to in vitro or ex vivo experiments. Each batch is synthesized and rigorously tested to exceed 99% purity, ensuring reproducible, publication-ready results for neuroscience, cell biology, and pharmacology laboratories. Whether you need to buy NSI-189 Free Base – Solution for high-throughput screening, receptor binding assays, or cell culture studies, RChems EU delivers uncompromised quality with discreet worldwide shipping.

Key Features & Benefits

• >99% Certified Purity – Every batch validated by HPLC, NMR, and mass spectrometry.
• Ready-to-Use Solution Format – No weighing, no dissolution variability – pipette directly for assays.
• Free Base Formulation – Ideal for researchers preferring the non-salt version for specific solubility or permeability studies.
• Discreet Packaging – Plain, unmarked outer boxes with no chemical names or external identifiers.
• Fast Worldwide Delivery – Expedited shipping to USA, Canada, UK, Australia, and all EU member states with temperature control where required.
• Vacuum-Sealed & Tamper-Evident – Protection against leakage, light degradation, and contamination during transit.
• Batch-Specific COA – Certificate of Analysis with chromatograms included or available upon request.
• Legal Compliance Labeling – Clear “For Research Use Only” marking to support institutional procurement.

Product Specifications

Applications & Usage – For Research Only

NSI-189 Free Base – Solution for research is strictly intended for in vitro and ex vivo laboratory applications, including but not limited to:

• High-Throughput Screening (HTS) – Ready-to-use format enables direct pipetting into 96- and 384-well plates for neurogenesis or cytotoxicity assays.
• Cell Culture Studies – Add directly to neuronal cell lines (e.g., SH-SY5Y, PC12, primary hippocampal neurons) after appropriate dilution in culture media.
• Receptor Binding Assays – Evaluate affinity at putative targets using radioligand displacement or functional assays.
• Signal Transduction Research – Study BDNF-TrkB-CREB pathway activation in response to NSI-189 treatment.
• Neuroplasticity Assays – Quantify dendritic arborization, spine density, or synaptogenesis in primary neuronal cultures.
• Mitochondrial Function Analysis – Assess ATP production, oxygen consumption rate (OCR), and reactive oxygen species (ROS) generation.
• Inflammatory Marker Studies – Measure cytokine expression (IL-6, TNF-α, IL-1β) in microglial or astrocyte cultures.
• Dose-Response Curve Generation – Pre-determined concentration allows accurate serial dilutions for EC₅₀/IC₅₀ determinations.

Critical Note: This product is not for human or animal consumption, nor for therapeutic, diagnostic, or veterinary use. No in vivo administration is permitted without explicit institutional ethics approval. NSI-189 is an investigational compound with no regulatory approval anywhere in the world for any medical use.

Purity & Testing

At RChems EU, analytical rigor defines our quality. Every batch of NSI-189 Free Base – Solution undergoes a comprehensive multi-tiered testing protocol, with additional validation of solution stability:

1. High-Performance Liquid Chromatography (HPLC-DAD) – Quantifies main compound purity (≥99.0% area normalization) on both the raw powder (pre-dissolution) and the final solution to confirm no degradation during formulation.
2. Nuclear Magnetic Resonance (¹H NMR & ¹³C NMR) – Confirms structural identity of the free base, including the Z-configuration of the benzylidene double bond and the butylamino side chain.
3. Mass Spectrometry (LC-MS/MS) – Validates molecular weight (323.43 g/mol for free base) and assesses impurity profiles at ppm levels.
4. Residual Solvent Analysis (GC-FID) – Ensures the solvent vehicle meets research-grade purity standards.
5. Solution Stability Testing – Accelerated stability studies (40°C for 7 days) confirm no precipitation, color change, or purity loss.
6. Container Integrity Testing – Leak-proof and tamper-evident seals verified for each unit.
7. Heavy Metals Testing (ICP-MS) – Ensures levels below USP <232> thresholds.

A Certificate of Analysis (COA) with raw chromatograms, NMR spectra, and stability data is included with every shipment. Only batches meeting 99%+ purity in both powder and solution forms are released. This level of purity is critical for neurogenesis research – impurities at even 1-2% can confound results in sensitive cell-based assays. Additionally, our solution format eliminates weighing errors that can exceed 5-10% with manual powder handling, dramatically improving inter-experiment reproducibility.

Safety & Handling Guidelines

WARNING: FOR RESEARCH USE ONLY. NOT FOR HUMAN OR ANIMAL CONSUMPTION.

• Personal Protective Equipment (PPE): Always wear nitrile gloves, chemical safety goggles, and a lab coat when handling the solution.
• Ventilation: Handle inside a certified chemical fume hood to prevent inhalation of vapors or aerosols.
• Spill Management: Absorb with inert material (vermiculite, sand). Dispose of as hazardous chemical waste per local regulations.
• Storage: Keep original container tightly closed at 2–8°C (refrigerated) , protected from light. Do not freeze unless specified.
• Incompatibilities: Avoid contact with strong acids, strong bases, and oxidizing agents.
• First Aid (Accidental Exposure): Rinse exposed skin or eyes with copious water for 15 minutes. If inhaled, move to fresh air. If ingested (accidentally), seek immediate medical attention – present the Safety Data Sheet (SDS).

Global Shipping & Discreet Delivery

RChems EU specializes in fast worldwide delivery without compromising your privacy or research security. For liquid formulations, we employ enhanced protocols.

• Plain Outer Packaging: Neutral corrugated box – no logos, no “NSI-189” text, no chemical names.
• Unmarked Customs Labels: Generic declaration such as “Laboratory Samples – Non-Hazardous Liquid” or “Research Materials – No Commercial Value.”
• Secondary Containment: Solution vials are sealed in absorbent material and placed in leak-proof, opaque inner pouches.
• Thermal Protection: Where required, insulated packaging with temperature-stable gel packs for refrigerated transit.
• Tamper-Evident Seals: Each vial is heat-sealed with a unique batch number visible only upon opening.
• Tracking & Insurance: Every order receives a unique tracking number. Optional shipping insurance covers loss, leakage, or damage in transit.
• Typical Transit Times (business days):
  • USA & Canada: 5–9 days
  • United Kingdom & Europe: 3–7 days
  • Australia & New Zealand: 7–12 days
  • Rest of world: 10–15 days

No signature required for standard delivery unless requested. Credit card and cryptocurrency statements show a neutral, non-chemical identifier.

Why Choose RChems EU?

• Verified Global Supplier – Thousands of successful research orders shipped to universities, neuroscience labs, and private research institutions since 2017.
• Stealth Packaging Experts – Our discreet delivery protocol maintains a 99.5% customs clearance rate across five continents, including for liquid shipments.
• Real-Time Customer Support – Email or live chat response within 12 hours (including weekends and holidays).
• Ready-to-Use Convenience – Save hours of preparation time and eliminate weighing/dissolution errors.
• Bulk & Repeat Order Discounts – Contact us for tiered pricing on multiple vials or larger volumes.
• Flexible Payments – Accepting BTC, ETH, USDT, and major credit cards with privacy protection.
• No Medical Claims – We strictly supply research chemicals; no misleading “human consumption” or “supplement” language.
• Batch Traceability – Every order is linked to a specific batch with retained solution samples for six months.

Legal & Safety Disclaimer

By purchasing NSI-189 Free Base – Solution from RChems EU, you acknowledge and agree to the following:

• You are at least 18 years of age (21 in jurisdictions where required for research chemicals).
• The product will be used exclusively for legitimate research purposes in a properly equipped laboratory setting (in vitro only unless licensed for in vivo).
• You have obtained any necessary local, state, and federal licenses required to possess this research chemical.
• You understand that NSI-189 is not approved by the FDA, EMA, MHRA, or any other health regulatory agency for any use. It is an investigational research chemical with no approved medical indications.
• Compliance with all applicable import, export, and possession laws is solely your responsibility.
• RChems EU reserves the right to cancel any order from jurisdictions where import is explicitly prohibited or where the buyer cannot provide proof of research affiliation upon request.
• No product sold is intended to diagnose, treat, cure, or prevent any disease or condition in humans or animals.

FAQ Section

1. What is NSI-189 Free Base – Solution used for in research?

NSI-189 Free Base – Solution for research is a ready-to-use liquid formulation of the investigational neurogenic compound NSI-189. It is primarily used in high-throughput screening (HTS), cell culture studies, and signal transduction research. Applications include: (1) quantifying hippocampal progenitor cell proliferation, (2) studying BDNF-TrkB-CREB signaling pathways, (3) assessing neuroplasticity markers (dendritic arborization, spine density), (4) mitochondrial function assays, and (5) dose-response curve generation. The solution format eliminates weighing errors, improving reproducibility. No human or veterinary applications are permitted.

2. What is the difference between NSI-189 Free Base – Solution and NSI-189 Phosphate powder?

The key differences are: (1) Salt form – Phosphate is a salt with enhanced aqueous solubility; Free Base is the non-salt version with different solubility and permeability characteristics. (2) Format – Our solution product is pre-dissolved and ready-to-use; phosphate is typically supplied as powder requiring dissolution. (3) Research applications – Free base is preferred for permeability or lipophilicity studies; phosphate is preferred for simple aqueous buffer systems. (4) Solubility – Phosphate dissolves readily in water; free base requires organic solvents (DMSO, ethanol) as supplied in our solution format. Choose based on your specific assay requirements.

3. Is NSI-189 Free Base – Solution legal to buy and import?

NSI-189 is not a controlled substance in most countries (USA, UK, EU, Canada, Australia) as of 2025. However, it is an unapproved investigational research chemical – its import, possession, and use are permitted only for legitimate laboratory research. It is not legal for human consumption, dietary supplement use, or self-administration in any jurisdiction. Some countries may regulate liquids differently from powders. You are solely responsible for verifying local laws before ordering. RChems EU may request documentation of research status or institutional affiliation.

4. How discreet is your shipping for liquid products?

Extremely discreet, with enhanced safety measures. Your order arrives in a plain, unmarked outer box with no mention of “NSI-189,” “neurogenesis,” “research chemical,” or “RChems EU” on the exterior. The customs declaration reads “Laboratory samples – Non-hazardous liquid” or “Research materials – No commercial value.” Inside, the vial is sealed in absorbent material and an opaque, leak-proof, vacuum-sealed pouch. No external markings suggest pharmaceutical or supplement content. For refrigerated shipments, thermal packaging is plain and unlabeled.

5. What is the guaranteed purity level, and how is it tested?

All NSI-189 Free Base – Solution batches are tested at two stages: (1) raw powder pre-dissolution at ≥99.0% purity via HPLC-DAD, and (2) final solution post-formulation to confirm no degradation. Confirmation includes ¹H NMR and ¹³C NMR (structural identity), LC-MS/MS (molecular weight 323.43 g/mol for free base), residual solvent analysis (GC-FID), solution stability testing (accelerated conditions), and heavy metals testing (ICP-MS). A batch-specific Certificate of Analysis (COA) with chromatograms and stability data is included inside the discreet package or available digitally before purchase.

6. How should I store the NSI-189 Free Base – Solution after opening?

Store in the original, tightly closed container at 2–8°C (refrigerated) , protected from light. Do not freeze unless explicitly stated on the label (freezing can cause precipitation or vehicle degradation). Upon first use, aliquot into smaller sterile vials to avoid repeated opening and temperature cycling. Once opened, use within 3 months for cell culture applications or within 6 months for analytical purposes. Never pipette directly from the stock vial without sterile technique – use a fresh, sterile pipette tip each time.

7. What solvent is used in the NSI-189 Free Base – Solution?

The specific solvent vehicle varies by batch and is clearly indicated on the product label and COA. Typical vehicles include DMSO (dimethyl sulfoxide), ethanol, or PEG-based (polyethylene glycol) formulations – all are research-grade, sterile-filtered, and tested for cell culture compatibility. DMSO-based solutions are ideal for high-throughput screening but require dilution (typically <0.1% final DMSO concentration for cell cultures). Ethanol-based solutions are preferred for certain enzymatic assays. Contact RChems EU for the exact vehicle of the current batch.

8. What is the mechanism of action for NSI-189 in research?

The precise molecular mechanism of NSI-189 remains under investigation. Published preclinical research suggests: (1) increased expression of BDNF (brain-derived neurotrophic factor) and TrkB receptor activation, (2) enhanced CREB (cAMP response element-binding protein) phosphorylation, (3) stimulation of mitochondrial function and ATP production, and (4) modulation of neuroinflammatory markers. However, the primary molecular target has not been definitively identified. Researchers use NSI-189 as a tool compound to study downstream neuroplasticity pathways independent of traditional receptor targets.

9. Can I order NSI-189 Free Base – Solution in larger volumes?

Yes. For research programs requiring more than the standard vial volume, contact RChems EU directly via the website contact form. We offer bulk configurations of 5mL, 10mL, 25mL, and 50mL vials (same 99%+ purity, same concentration) with volume-based pricing (typically 10–30% discount). Larger orders receive enhanced discreet packaging with additional temperature protection, tamper-evident seals, priority tracking, and expedited handling.

10. How do I dilute NSI-189 Free Base – Solution for cell culture work?

For cell culture applications: (1) Determine the desired final concentration (typical range: 0.1–10 µM for neurogenesis assays). (2) Calculate the required volume of stock solution using the formula: ( V{stock} = (C{final} times V{final}) / C{stock} ). (3) Dilute the stock solution into pre-warmed cell culture media (DMEM, RPMI, Neurobasal) with gentle pipetting. (4) Ensure the final solvent concentration (e.g., DMSO) is ≤0.1% to avoid cytotoxicity. (5) Filter-sterilize through a 0.22 µm membrane if sterility is required. A detailed dilution protocol is included with each shipment.

11. What analytical methods are recommended for NSI-189 quantification from solution?

For researchers verifying concentration or studying stability: typical HPLC conditions include a C18 column (150 mm × 4.6 mm, 5 µm), mobile phase of acetonitrile:0.1% formic acid in water (35:65 v/v), flow rate 1.0 mL/min, UV detection at 270 nm. Retention time for NSI-189 free base is approximately 6.5 minutes. For LC-MS/MS, use positive ion mode (ESI+) with MRM transition m/z 324.2 → 228.1. A validated method summary is included with the COA.

12. What if the solution crystallizes or precipitates?

If precipitation occurs (rare with proper storage), gently warm the vial to room temperature (20–25°C) and vortex or sonicate for 1–2 minutes. Do not heat above 40°C. If precipitation persists, the product may have exceeded its shelf life or been exposed to moisture – contact RChems EU support for guidance. Do not use precipitated solution for quantitative assays as concentration will be inaccurate.

Ready to advance your neuroscience research with ready-to-use NSI-189 Free Base – Solution?
Buy NSI-189 Free Base – Solution from RChems EU today and experience 99% purity, discreet worldwide delivery, and professional support – from a supplier researchers trust worldwide.

This description is for informational purposes only. No claims of safety, efficacy, or legality are made for human or animal use. Always consult your institutional review board, legal counsel, and local laws before purchasing research chemicals.