6-Hydroxy-2-naphthimidamide Methanesulfonate for Solid-Phase
Technical Specifications and Purity Grades of 6-Hydroxy-2-naphthimidamide Methanesulfonate Salt (CAS 82957-06-0) for Solid-Phase Synthesis
In solid-phase peptide synthesis (SPPS), the quality of building blocks directly determines coupling efficiency and final peptide purity. 6-Hydroxy-2-naphthimidamide methanesulfonate salt, also known as 6-Hydroxynaphthalene-2-carboximidamide methanesulfonate, serves as a critical intermediate in the production of nafamostat mesylate, a serine protease inhibitor. For solid-phase applications, this compound must meet stringent specifications to ensure reproducible results. NINGBO INNO PHARMCHEM CO.,LTD. supplies this intermediate with industrial purity levels tailored for large-scale solid-phase synthesis, offering a drop-in replacement for existing supply chains without compromising performance.
Our product is manufactured under controlled conditions to achieve consistent quality. While standard specifications are provided in the batch-specific Certificate of Analysis (COA), typical purity exceeds 98% by HPLC. This high purity minimizes side reactions during solid-phase coupling, a crucial factor when scaling up from research to production. For procurement managers, this translates to fewer rejected batches and lower overall cost per peptide. We also offer custom synthesis services to adjust purity profiles or particle size distribution for specialized solid-phase protocols.
As a global manufacturer, we understand the importance of supply chain reliability. Our production capacity supports bulk orders, and we maintain safety stock to buffer against market fluctuations. This ensures that your solid-phase synthesis campaigns proceed without interruption. For detailed specifications, please refer to the batch-specific COA, which includes assay, moisture content, and residual solvents.
| Parameter | Typical Value | Test Method |
|---|---|---|
| Appearance | White to off-white crystalline powder | Visual |
| Assay (HPLC) | ≥98.0% | In-house HPLC method |
| Moisture (KF) | ≤0.5% | Karl Fischer titration |
| Residual Solvents | Complies with ICH Q3C | GC |
| Heavy Metals | ≤20 ppm | ICP-MS |
This intermediate is a key component in the synthesis route of nafamostat mesylate, a compound with growing demand in anticoagulant and anti-inflammatory therapies. By sourcing from a dedicated manufacturer, you gain access to a consistent supply of pharmaceutical-grade 6-Hydroxy-2-naphthimidamide methanesulfonate salt that meets the rigorous demands of solid-phase chemistry.
Certificate of Analysis (COA) Parameters: Critical Quality Attributes for Solid-Phase Peptide Synthesis
For solid-phase synthesis, the COA is more than a formality—it is a blueprint for process control. When evaluating 6-Hydroxy-2-naphthimidamide methanesulfonate salt, several parameters demand scrutiny. First, the assay value confirms the active content, ensuring accurate stoichiometry in coupling reactions. Second, the impurity profile, including related substances like 6-(diaminomethylidene)naphthalen-2-one methanesulfonic acid, must be tightly controlled. Even trace impurities can act as chain terminators or introduce difficult-to-remove byproducts in solid-phase workflows.
Our quality assurance program includes rigorous testing for residual solvents and heavy metals, aligning with pharmaceutical standards. The COA for each batch details these results, allowing you to integrate our intermediate seamlessly into your existing solid-phase protocols. We also provide additional data upon request, such as particle size distribution, which can influence dissolution rates and resin loading efficiency.
In solid-phase peptide synthesis, the methanesulfonate salt form offers advantages in solubility and stability compared to the free base. However, handling requires attention to hygroscopicity. Our packaging in sealed drums under inert atmosphere mitigates moisture uptake during storage and transport. For more insights into impurity control, see our article on pharmaceutical-grade impurity profiles for nafamostat mesylate intermediates.
Industrial-Scale Handling and Bulk Packaging: IBC Totes and 210L Drums for Solid-Phase Reagent Supply
Scaling solid-phase synthesis from grams to kilograms demands robust logistics. NINGBO INNO PHARMCHEM CO.,LTD. supplies 6-Hydroxy-2-naphthimidamide methanesulfonate salt in industry-standard packaging: 210L steel drums with polyethylene liners and, for larger volumes, intermediate bulk containers (IBC totes). These formats are designed to preserve product integrity during global shipping while facilitating safe handling in your facility.
Our drums are UN-certified and labeled according to GHS standards. Each unit is nitrogen-flushed to prevent oxidative degradation, a critical consideration for methanesulfonate salts that can be sensitive to moisture and oxygen. For solid-phase applications, where reagent quality directly impacts yield, this attention to packaging ensures that the product arrives in the same condition as when it left our warehouse.
Bulk pricing is available for multi-drum orders, and we can accommodate custom packaging requirements upon request. Our logistics team coordinates with freight forwarders to optimize shipping routes, reducing lead times and costs. Whether you need a single drum for pilot studies or multiple IBC totes for commercial production, we provide a reliable supply chain. For a broader perspective on sourcing, read our guide on pharmaceutical-grade nafamostat intermediate supply.
Non-Standard Parameter Insights: Viscosity and Crystallization Behavior of Methanesulfonate Salt in Solid-Phase Workflows
Beyond standard COA parameters, field experience reveals nuances that can impact solid-phase synthesis. One such factor is the viscosity of solutions prepared from 6-Hydroxy-2-naphthimidamide methanesulfonate salt. At concentrations above 20% w/v in common solvents like DMF or NMP, the solution viscosity increases noticeably, which can affect flow rates in automated solid-phase synthesizers. Pre-warming the solvent to 30–35°C typically reduces viscosity and improves handling.
Another practical consideration is crystallization behavior. Under sub-ambient storage (2–8°C), the salt may form a hard cake, requiring mechanical agitation before use. This does not indicate degradation but can slow down dispensing. We recommend storing the product at controlled room temperature (20–25°C) and avoiding freeze-thaw cycles. If crystallization occurs, gentle warming and stirring restore free-flowing powder without affecting purity.
Trace color variations, from white to pale beige, are occasionally observed between batches. This is linked to minor differences in residual solvent levels and does not correlate with assay or performance in solid-phase coupling. However, for color-sensitive applications, we can provide material with tighter color specifications through our custom synthesis service. These insights come from years of manufacturing this intermediate and supporting clients in optimizing their solid-phase processes.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 6-Hydroxy-2-naphthimidamide methanesulfonate salt?
Our standard MOQ is 1 kg for initial evaluations. For commercial production, we offer bulk pricing on orders of 25 kg and above, with further discounts for multi-drum or IBC tote quantities. Contact our sales team for a tailored quote based on your annual volume.
Do you provide custom synthesis of this intermediate for specific solid-phase applications?
Yes, we offer custom synthesis services to modify purity, particle size, or salt form. Whether you need a particular impurity profile or a different counterion, our R&D team can develop a process to meet your specifications. Lead times vary depending on complexity.
What documentation is provided with each shipment?
Every shipment includes a Certificate of Analysis (COA) and a Safety Data Sheet (SDS). Additional documentation, such as a Certificate of Origin or GMP statements, can be provided upon request. We maintain full traceability from raw materials to finished product.
How should I store 6-Hydroxy-2-naphthimidamide methanesulfonate salt for solid-phase use?
Store in a tightly sealed container at 20–25°C, protected from light and moisture. Under these conditions, the product is stable for at least 24 months. Avoid exposure to high humidity, as the salt is hygroscopic and may absorb moisture, affecting weighing accuracy.
Can you ship internationally, and what are the typical lead times?
We ship globally from our facilities in China. Lead times for standard orders are 2–4 weeks, depending on destination and customs clearance. We work with experienced freight forwarders to ensure timely delivery. Expedited shipping is available for urgent requirements.
Sourcing and Technical Support
Selecting a reliable source for 6-Hydroxy-2-naphthimidamide methanesulfonate salt is critical for maintaining the efficiency of your solid-phase synthesis operations. NINGBO INNO PHARMCHEM CO.,LTD. combines manufacturing expertise with a customer-centric approach, offering consistent quality, flexible packaging, and technical support. Our team includes chemists who understand the nuances of solid-phase chemistry and can assist with process optimization. Partner with a verified manufacturer. Connect with our procurement specialists to lock in your supply agreements.