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2,3-Diamino-6-Methoxypyridine Dihydrochloride

    • Product Name 2,3-Diamino-6-Methoxypyridine Dihydrochloride
    • Alias 6-Methoxy-2,3-pyridinediamine dihydrochloride
    • Einecs 629-751-7
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    273578

    Productname 2,3-Diamino-6-Methoxypyridine Dihydrochloride
    Molecularformula C6H10Cl2N4O
    Molecularweight 225.08 g/mol
    Appearance White to off-white crystalline powder
    Meltingpoint Decomposes above 200°C (estimate)
    Solubility Soluble in water
    Storagetemperature Store at 2-8°C (refrigerated)
    Purity Typically ≥ 98% (supplier-dependent)
    Synonyms 2,3-diamino-6-methoxy-pyridine dihydrochloride
    Smiles COC1=NC(N)=C(N)C=C1.Cl.Cl
    Ph Approximately neutral (in aqueous solution)
    Application Pharmaceutical intermediate and chemical research

    As an accredited 2,3-Diamino-6-Methoxypyridine Dihydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Opaque, white HDPE bottle containing 5 grams of 2,3-Diamino-6-Methoxypyridine Dihydrochloride, tightly sealed with tamper-evident screw cap.
    Shipping 2,3-Diamino-6-Methoxypyridine Dihydrochloride is shipped in a tightly sealed container under dry, cool conditions to maintain stability and prevent moisture absorption. The package is clearly labeled according to regulatory and safety standards, with a Material Safety Data Sheet (MSDS) included. Standard shipping protocols for laboratory chemicals are followed throughout transit.
    Storage 2,3-Diamino-6-Methoxypyridine Dihydrochloride should be stored in a tightly sealed container, away from moisture and light, at room temperature (15–25°C) in a well-ventilated, dry area. Keep away from incompatible substances, such as strong oxidizers. Ensure proper labeling and store in a designated chemical storage cabinet. Use personal protective equipment when handling the compound.
    Application of 2,3-Diamino-6-Methoxypyridine Dihydrochloride

    Applications of 2,3-Diamino-6-Methoxypyridine Dihydrochloride in Industrial Manufacturing

    As an original manufacturer of 2,3-Diamino-6-Methoxypyridine Dihydrochloride, we supply this fine chemical for well-established downstream processes focused on high-value specialty synthesis. The applications detailed below highlight major industrial sectors using this intermediate in tightly regulated environments that require full traceability, formulation guidance, and proven consistency in batch performance.

    1. Active Pharmaceutical Ingredient (API) Intermediate – Anti-Hypertensive Agents

    Major pharmaceutical companies use this compound in the synthesis of specific anti-hypertensive APIs. It acts as a pyridine-based intermediate during multi-step synthesis, contributing a key structural motif necessary for bioactivity. The compound enters early-to-mid-stage reactions, offering precise reactivity for downstream building and functionalization. Documentation and batch records must comply with global regulatory filings, making traceability and impurity profile control essential.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • USP, EP, JP Pharmacopoeias as applicable for target API
    • FDA 21 CFR Part 210/211 (US manufacturing), EMA (EU) compliance
    • Comprehensive change control and audit trail protocols

    Typical usage ratio

    • 0.1–0.6 mole ratio relative to core coupling reagent, depending on target molecule and route — adjusted based on impurity tolerance and scale-up yield studies

    Downstream process integration

    • Charged into initial multi-step synthesis reactor after pre-drying; subsequent condensation, cyclization, or coupling occurs under controlled pH and temperature

    Final product types

    • Anti-hypertensive bulk APIs such as certain pyridine derivatives (regulated Rx drugs)
    • Clinical trial material and reference standard substances
    • Regulated intermediates for further chemical transformation

    2. Dye and Pigment Intermediates – High-Purity Pyridine Complexes

    Manufacturers of advanced dyes and pigments integrate this raw material as a specialty amine source in multi-component coupling reactions. It serves as a precursor for dye molecules that require 2,3-diamino substitution on the pyridine ring to achieve target chromophore properties, including heat stability and specific wavelength absorption profiles. Precise addition at the coupling stage ensures color uniformity and regulated trace levels of byproducts.

    Industry compliance standards

    • EN 71-3:2019 (Heavy metal migration in colorants for toys)
    • ISO 9001:2015 (Quality management in dye manufacturing)
    • REACH registration (EU)
    • Textile Eco-label requirements where applicable (OEKO-TEX Standard 100 restrictions on amine content)

    Typical usage ratio

    • 0.5–1.2 wt% of total dye batch depending on target pigment intensity, processed lot size, and specified color properties—determined through preliminary tinting strength tests

    Downstream process integration

    • Introduced to diazotization or condensation tank after stabilization of initial aromatic building block; pH-adjusted to enhance selective reactivity

    Final product types

    • Pyridine-derived specialty dyes for fiber-reactive and metal-complex applications
    • Heat-stable pigments for plastics and pre-colored masterbatches
    • Color additives for inkjet formulations

    3. Diagnostic Reagent Synthesis – Chromogenic Substrate Precursors

    This chemical is used by key diagnostic kit manufacturers to produce chromogenic substrate precursors. It provides an essential building block for pyridine-based indicators used in enzymatic and colorimetric assays. Quality demands emphasize lot consistency, as reactivity in the final diagnostic reagent must remain constant to ensure accurate clinical readings. The compound is introduced at specific synthesis steps following in-process analytical verification.

    Industry compliance standards

    • ISO 13485:2016 (Quality management for in vitro diagnostics)
    • IVDR (EU Regulation 2017/746 for IVD devices)
    • Good Laboratory Practice (GLP) for IVD component manufacturing
    • Lot traceability with Certificate of Analysis (CoA) requirements

    Typical usage ratio

    • 0.02–0.3 mmol per assay synthesis run, controlled by yield curve optimization for the specific substrate reaction

    Downstream process integration

    • Fed into the reaction vessel for chromophore precursor synthesis after buffer adjustment; reaction endpoint monitored by TLC or HPLC

    Final product types

    • Chromogenic and fluorogenic substrates for clinical diagnostic kits
    • Color development solutions for immunoassay and enzyme-linked assays
    • Specialized detection reagents for laboratory research

    4. Research & Specialty Chemical Synthesis – Functionalized Pyridine Libraries

    Contract research organizations and advanced material developers rely on this material to access functionalized pyridine cores for building diverse compound libraries. The compound’s unique diamino-methoxy pattern enables niche modifications in medicinal chemistry, catalyst research, and agrochemical discovery. Accurate batch reproducibility and full analytical documentation underpin reliable SAR (structure–activity relationship) studies for molecule screening.

    Industry compliance standards

    • ISO/IEC 17025 for chemical testing and laboratory quality
    • Domestic chemical handling codes (OSHA Hazard Communication Standard, US; Regulation on Lab Safety, EU)
    • Material transfer requirements for chemical research collaborations
    • Custom specification contracts for preclinical supply

    Typical usage ratio

    • 0.03–0.2 eq in library synthesis; quantity varies with scale and desired functionalization, typically optimized through parallel test reactions

    Downstream process integration

    • Dosed into combinatorial or stepwise organic synthesis under controlled inert atmosphere; isolated intermediates characterized by NMR and LC-MS before further derivatization

    Final product types

    • Pyridine-based compound libraries for high-throughput screening
    • Candidate molecules for medicinal chemistry and agrochemical discovery
    • Reference substances for analytical method development
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    Certification & Compliance
    More Introduction

    2,3-Diamino-6-Methoxypyridine Dihydrochloride: Manufacturer's Perspective on Quality and Application

    Introduction to Our Process

    Producing 2,3-Diamino-6-Methoxypyridine Dihydrochloride isn’t about following a generic formula. Inside our manufacturing facility, each batch starts with tightly sourced starting materials. We scrutinize every shipment, cross-checking with material safety data and historic batch performance. Over the years, deviations in moisture content or subtle changes in raw material particle size have led to variations in purity or crystal habit. We’ve fine-tuned process controls—temperature, humidity, mixing rates—because inconsistency isn’t just a quality issue, it’s a waste of active ingredient and manufacturing hours.

    Laboratory synthesis of heterocyclic structures like 2,3-Diamino-6-Methoxypyridine Dihydrochloride isn’t new, but industrial-scale runs bring complexity. Early generations of production often saw off-color products or slower crystallization. Addressing these wasn’t about more sophisticated equipment, but careful tweaks to step sequences, precise monitoring, and a relentless commitment to chemical cleanliness. Our own team members have caught minute discrepancies, drilled down root causes, and reported actionable process insights. That culture of communication has kept our product quality stable.

    Product Overview: What Sets This Chemical Apart

    This compound stands out for both its structure and its behavior in solution. Its two amino groups and methoxy substitution on the pyridine ring provide a unique balance of nucleophilicity and electronic effect. Compared with simple pyridine derivatives, the methoxy substitution alters solubility and the overall hydrogen-bonding pattern in both intermediate reactions and analytical testing. Our own analytics confirm that freshly-precipitated 2,3-Diamino-6-Methoxypyridine Dihydrochloride brings a high level of purity, often exceeding 99.5% by HPLC and NMR cross-verification. We routinely check each lot by melting point and spectral matching to maintain consistency.

    What really distinguishes this product is how closely its performance tracks across batches. We have customers in the pharmaceutical research sector who refuse to switch suppliers, citing batch data that aligns from project to project. From a manufacturer’s point of view, that loyalty grows from proactivity: anticipating possible byproduct formation, designing our workup and purification to exclude them rather than simply monitor them. Few chemicals of this class combine such solubility with minimal residual moisture, and this emerges from our tight environmental controls during drying and packaging.

    Technical Specifications and Analytical Approach

    The compound's molecular formula follows C6H10N4O·2HCl, and our in-house process delivers a crystalline powder that stores well under typical laboratory conditions. The fine particle size allows for quick dissolution in water and common alcohols, which simplifies its use in solution-phase reactions. Our team has compared flow, clumping, and rehydration issues head-to-head with direct competitors. The dihydrochloride salt form brings greater stability than the free base, and we log stability data over months to ensure customers don’t face issues with color changes or loss of potency in later stages.

    Every production run includes rigorous impurity profiling. It’s not enough to meet commercial standards; we run GC-MS scans regularly to detect trace amine contaminants that could confound sensitive research applications. Our QC staff checks batch homogeneity with sensitive spectroscopic methods—NMR, FTIR, and UV-Vis—cross-referenced with retention time standards. The importance lies in long-term credibility; problems with unidentified peaks or off-ratio chlorides aren’t technical glitches—they indicate process drift, which we solve by backtracking, not hiding.

    Laboratory and Scale-up Experience

    Early efforts scaling this molecule from flask to reactor sized up the classic headaches: inconsistent exotherm management, poorly controlled crystallization, and stubborn color impurities. Our engineers and lab chemists established robust agitation protocols and baffles, fine-tuned solvent ratios, and introduced cascading temperature controls, which turned irregular formation into a controlled solid-state process. Grain size became uniform, yield losses dropped, and the reproducibility became demonstrable across kilograms. Even now, we keep control samples so we can pull and match past batches when questions arise.

    Customer feedback in pilot and commercial settings shaped our handling protocols. Some clients use the compound as a building block for advanced pharmaceutical intermediates, where solubility under acidic and basic conditions matters. We’ve collaborated directly, running split samples under conditions they need, and correlated their performance data with our in-house analytics. This continuous loop closes the gap between process chemistry and real-world laboratory experience—a gap too many producers ignore. When a batch didn’t meet a customer’s strict nitrogen content ceiling, we halted the shipment and reprocessed the entire lot at a cost to ourselves, because rushing substandard lots is no solution.

    Usage Across Research and Industry Sectors

    2,3-Diamino-6-Methoxypyridine Dihydrochloride often features in synthetic pharmaceutical routes, diagnostic research, and specialty material R&D. Research chemists value it as a core scaffold for heterocyclic compound synthesis, where the two amino groups activate substitution or condensation reactions. The methoxy group introduces unique orientation for further functionalization, which can open doorways in structure-activity relationship studies. In multiple collaborations, we’ve seen it serve as an intermediate for high-potency active pharmaceutical ingredients, sometimes as the final precursor before late-stage ring closure.

    Researchers in the diagnostic sector turn to this molecule for its reactive amino sites and predictable behavior under several chromatography conditions. Diagnostics depend on robust reagent reproducibility, so every change in composition or trace impurity in synthetic building blocks registers at the endpoint. Our strict in-process testing reflects those needs, and we never assume that a batch “that looks right” actually functions as expected. We listen when analytical researchers request lot-specific certificates that show more than basic assay; full impurity profiles, stability data, and moisture content get delivered alongside the product.

    Our partners in advanced materials have experimented with this compound in applications ranging from polymer modification to catalyst supports. Their teams walk us through their intended modifications and rely on our insights from repeated pilot runs. As a manufacturer rather than a repackager or distributor, we own the raw data, the process logs, and the technical documentation—the assurance that comes from intimate production knowledge rather than a distant paperwork trail.

    Comparisons and Differentiation from Other Products

    Many customers question the differences between our 2,3-Diamino-6-Methoxypyridine Dihydrochloride and similar amino-pyridine derivatives. The distinction lies not just in the chemical structure but in how it performs in actual reactions. Take 2,3-diaminopyridine: without the methoxy group at position 6, you see altered reactivity and a different solubility profile, impacting downstream yields or purification ease. Substituting for 2,3-Diamino-6-Methoxypyridine Dihydrochloride can mean tackling unexpected byproduct issues or needing harsher reaction conditions. We’ve run side-by-side process and purity comparisons so customers can make data-driven selections.

    Salt forms make another major difference. The dihydrochloride provides better shelf life than the free base or monohydrochloride versions, which can absorb moisture and degrade in air. We realized this early after tracking several failed shelf-life studies with less stable forms; the double chloride coordination cuts down on atmospheric moisture pick-up, which matters both for storage and accurate weighing. All these findings stem from long-term process optimization, not laboratory conjecture.

    Direct feedback on workflow comes from customers who previously sourced similar compounds from distributors. They tell us that our batch homogeneity, real-time responsiveness, and data transparency keep their processes running. Some competitors take shortcuts that result in yellowish hues or off-odors, both of which signal oxidative instability. Our QC team catches these at the granulation and drying phases, never at the packaging line.

    Customers concerned with compliance and regulatory data also find that our documentation tells the entire story. Trace metals testing is routine. We’ve had to upgrade several process vessels after identifying persistent trace contamination—many suppliers brush this off or obfuscate root causes. Every change we implement gets documented and communicated out to all of our repeat clients, who expect not just a chemical, but continuity.

    Manufacturing Challenges and Our Solutions

    Consistent output for 2,3-Diamino-6-Methoxypyridine Dihydrochloride brought us some hard lessons. Early-phase operations faced recurring issues with incomplete conversion and polymeric byproduct formation, particularly at scale. Our chemists spent weeks running alternative quench sequences and investigating additives that would tip the equilibria in favor of complete product formation rather than cleaning up after the fact. We examined trace water ingress and tweaked our drying and atmospheric controls. Eventually, yields stabilized, and byproduct content dropped beneath the levels reported by most major producers.

    Shipping bulk quantities to overseas customers pushed us to rethink our containment, as dihydrochloride salts can pick up moisture and clump. We shifted to triple-sealed drums, desiccant packs, and controlled warehouse environments, following in-person discussions with our end-users on other continents. This isn’t just about ticking a packaging box, but learning directly from complaints and working backward to root causes.

    We also monitor the evolving regulatory environment around amine handling and emissions. Our facility designers integrated solvent recovery and gas scrubbing upgrades years before mandatory compliance deadlines, based on input from in-house environmental scientists and customer compliance teams. Bringing our environmental controls up to par with—and often in excess of—legal mandates has meant uninterrupted production, even when peers scramble to adapt to new rules. Auditors touring our line see the investment in clean, safe working conditions first-hand.

    Building Trust Through Technical Rigor

    Our perspective on 2,3-Diamino-6-Methoxypyridine Dihydrochloride isn’t just as a commodity. Each batch carries the fingerprints of dozens of hands—chemists, engineers, QC staff, and shipment teams—who operate with the understanding that chemical production isn’t guesswork. We invest in hands-on training, because no amount of automated instrumentation can replace the experienced eye that knows what normal looks like, or more importantly, what doesn’t. We take nothing for granted; out-of-spec findings are cause for open meetings, not quiet fixes.

    Direct contact with users through plant visits or technical exchanges fosters a shared sense of ownership. Many scientists developing new drug candidates have shown us side-by-side yield comparisons or chromatograms on our product, compared with material sourced elsewhere. Their findings—fewer unknown peaks, more predictable reactivity—reflect the thousands of micro-decisions we make with every synthesis run and product release. The pride comes not from marketing claims but proof built over time, through continuous data collection, root cause investigations, and a refusal to cut corners.

    Continuous Improvement, Not Just Compliance

    Audits come in many forms—regulatory, third-party, even customer-led. We approach each as an opportunity to find gaps and fix underlying issues, rather than patching symptoms. Documentation for 2,3-Diamino-6-Methoxypyridine Dihydrochloride now runs multiple layers deep, from synthesis batch records to environmental logs, full impurity analysis, and long-term stability datasets. Customers looking to satisfy international regulators or internal safety teams often ask us for raw analytical output—they don’t get filtered summaries. Our credibility results from this openness, and our willingness to implement process changes that may carry short-term costs for long-term quality.

    Chemists and production staff aren’t siloed from support or commercial teams. They meet to discuss challenges such as new regulatory impurity limits or sudden changes in starting material availability. Experience with cross-contamination incidents or process drift events doesn’t disappear into a report; instead, lessons become new SOPs, and the whole team reviews near-miss data every quarter.

    Looking Ahead: Responding to Research and Market Changes

    The accelerating pace of drug discovery and specialty heterocycle synthesis packs new demands into every production cycle. We see more researchers pushing for higher throughput syntheses, lower batch-to-batch impurities, and ever more stringent documentation. Our strategy focuses on staying ahead, not through gimmicks but by doing the basics better: better raw material control, deeper in-process analytics, and continuous upgrades to both lab and plant equipment. We’ve undertaken multi-year R&D initiatives, seeking both incremental yield gains and dramatic reductions in process waste.

    We remain accessible to customers developing new formulations or investigating emerging applications—sometimes through regular project meetings, other times by preparing pilot-scale lots tailored to unique test protocols. Discussion of hurdles, not just successes, defines our relationships. The needs of scientists change as research trends shift, and we adapt our product forms, documentation, and packaging according to direct dialogue, not guesswork. Our long view prioritizes trust, transparency, and a technical partnership with the research and manufacturing community.

    Conclusion: Our Commitment and Outlook

    Every year, we see new players entering the chemical market, advertising similar compounds. The product itself carries value, but the greatest assurance for customers rests in consistent supply and technical backing rooted in hands-on manufacturing. Our journey with 2,3-Diamino-6-Methoxypyridine Dihydrochloride mirrors the collective learning of a manufacturing organization—process breakthroughs, routine setbacks, ongoing root-cause analysis, and a continual drive for improvement. As chemical manufacturers, our greatest asset isn’t just the product, but the knowledge, reliability, and accountability we deliver with each shipment.