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5,6-Dimethoxyindole

    • Product Name 5,6-Dimethoxyindole
    • Alias 5,6-Dimethoxy-1H-indole
    • Einecs 620-517-1
    • 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
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    Specifications

    HS Code

    883520

    Chemical Name 5,6-Dimethoxyindole
    Molecular Formula C10H11NO2
    Molecular Weight 177.20 g/mol
    Cas Number 3139-16-6
    Appearance Off-white to beige solid
    Boiling Point 332.6 °C at 760 mmHg
    Melting Point 110-113 °C
    Density 1.210 g/cm3
    Solubility Slightly soluble in water; soluble in organic solvents like DMSO and ethanol
    Iupac Name 5,6-dimethoxy-1H-indole
    Pubchem Cid 199346
    Smiles COC1=CC2=C(C=C1OC)NC=C2
    Inchi InChI=1S/C10H11NO2/c1-12-8-3-7-6-11-5-9(13-2)4-10(7)8/h3-6,11H,1-2H3

    As an accredited 5,6-Dimethoxyindole factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 5,6-Dimethoxyindole is packaged in a 25g amber glass bottle with a secure screw cap and warning label.
    Shipping **5,6-Dimethoxyindole** is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. It is handled in accordance with chemical safety regulations, often packed with cushioning material. Labeling includes hazard information. Shipments comply with local and international transport guidelines for laboratory chemicals to ensure safe delivery.
    Storage 5,6-Dimethoxyindole should be stored in a tightly sealed container, protected from light and moisture. Keep it in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents and acids. Store at room temperature unless otherwise specified by the manufacturer. Ensure proper labeling and keep out of reach of unauthorized personnel.
    Application of 5,6-Dimethoxyindole

    Applications of 5,6-Dimethoxyindole in Industrial Manufacturing

    As a specialized manufacturer, we supply 5,6-Dimethoxyindole for precision applications in advanced chemical value chains. This raw material supports distinctive processes across selected industrial and R&D sectors, where specific performance and regulatory criteria determine its role in formulations. Below we outline its core application scenarios, focusing on technical integration, regulatory benchmarks, usage parameters, and resulting end-products.

    1. Hair Dye Intermediate for Permanent and Oxidative Hair Color Products

    5,6-Dimethoxyindole is directly incorporated as a controlled indole-derivative intermediate in the synthesis of indole-based hair colorants, offering stable darkening and blue-black chromophores. Cosmetic manufacturers integrate it during the formulation of dye precursors for oxidative and permanent hair color systems; its contribution is measured for predictable color consistency and safety in final consumer products.

    Industry compliance standards

    • EU Cosmetics Regulation (EC) No 1223/2009, Annex III, IV (specific limits and allowable substances)
    • US FDA 21 CFR 73.2190 for externally applied color additives
    • China GB 7916-2015 (Safety Technical Standard for Cosmetics)
    • OECD Safety Assessments for Cosmetic Ingredients

    Typical usage ratio

    • 0.05–0.3% by weight in the active dye phase of hair color cream bases, adjusted based on desired color depth, matrix compatibility, and local maximum allowable limits

    Downstream process integration

    • Added to the pre-mix phase with other primary and coupler intermediates prior to oxidation blending; controlled addition ensures full dispersion and controlled reaction kinetics during product stabilization; monitored by in-line spectrometry or batch QC assays for uniformity

    Final product types

    • Permanent oxidative hair dyes (cream and liquid formulations)
    • Professional salon-grade colorant bases
    • At-home retail hair coloring kits
    • Specialty color-restoring treatments for gray coverage

    2. Pharmaceutical Intermediate for Indole Alkaloid Synthesis

    Chemical process manufacturers in the pharmaceuticals sector use 5,6-Dimethoxyindole as a key building block for synthesizing a range of indole alkaloids, targeting advanced small-molecule APIs, including tryptamine derivatives and limited classes of psychoactive research reagents. Its high purity and precise substitution pattern ensure clean stepwise conversions under GMP-compliant conditions.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • U.S. Pharmacopoeia (USP) monographs for indole derivatives (if applicable to downstream API)
    • European Pharmacopoeia (Ph. Eur.) standards for advanced intermediates
    • China GMP 2010 Edition (for registered pharmaceutical chemicals)

    Typical usage ratio

    • Stoichiometric amounts typically ranging from 0.8–1.5 molar equivalents per target molecule; fine-tuned per synthetic route and expected yield optimization

    Downstream process integration

    • Introduced during early-stage ring construction, condensation, or alkylation cycles in multi-step organic synthesis pathways; participates in protected or free-form conversions to furnish active indole scaffolds

    Final product types

    • Advanced research-grade APIs for CNS or oncology research
    • Reference standards and starting materials for drug discovery
    • Pilot-scale indole alkaloid intermediates for CDMO supply
    • Targeted indole-based small molecules for structure-activity studies

    3. Melanin Analog Synthesis for Pigment Research and Diagnostic Tools

    Research chemicals suppliers and biotech companies utilize 5,6-Dimethoxyindole in controlled oxidative polymerization processes to generate synthetic eumelanin analogs. These materials enable biomedical testing as pigment standards, in vitro diagnostic markers, or photoprotective pigment films, addressing the need for reliable biomimetic pigments without reliance on animal tissue extracts.

    Industry compliance standards

    • ISO 13485:2016 (Quality management for medical devices and diagnostics)
    • REACH (EC No 1907/2006) Registration, Evaluation, Authorisation and Restriction of Chemicals (material safety compliance)
    • GLP (Good Laboratory Practice) OECD 21 for analytical reagents
    • Guidelines for laboratory-use synthetic pigments (varies by jurisdiction and device registration pathway)

    Typical usage ratio

    • Monomer loading at 10–30 mM concentration in oxidative polymerization gels; proportion calibrated to achieve target pigment absorbance and molecular weight distributions

    Downstream process integration

    • Dosed into oxidation medium with catalytic initiators; converted under controlled pH, temperature, and oxygenation to yield insoluble pigment films or soluble analog standards for biochemistry assays

    Final product types

    • Synthetic melanin film chips for device calibration
    • Diagnostic color standards for melanin quantification kits
    • Research pigments for photobiology and UV-protection studies
    • Reference substances for clinical pigment analysis

    4. High-Performance Dye Precursors in Electronic and OLED Material Sectors

    Advanced materials laboratories and electronics component manufacturers incorporate 5,6-Dimethoxyindole to synthesize custom indole-based dyes, which function as active layers in organic electronics, such as OLED emitters or photodetectors. These specialty dyes require consistent substitution and electronic properties for reproducibility in thin-film and vapor deposition processes.

    Industry compliance standards

    • IPC-4101C (Specification for Base Materials for Printed Boards)
    • RoHS Directive 2011/65/EU for electronic chemicals safety
    • ISO 9001:2015 (Quality Management for Material Supply)
    • JEDEC JESD22 (standard methods for material reliability testing in semiconductors and optoelectronics)

    Typical usage ratio

    • 0.1–2.0% by mass in dye-forming batches depending on target color purity, thickness of emissive layer, and device performance requirements; precise ratios determined in pilot-scale synthesis

    Downstream process integration

    • Employed during organic synthesis of heterocyclic dye molecules prior to purification and formulation as soluble films or vacuum-deposited thin layers in OLED stack assembly; final dye stability and charge-transport properties validated by EL measurement

    Final product types

    • Blue and near-UV emitter molecules for OLED panels
    • Thin-film organic photodetector coatings
    • Specialty dye batches for circuit patterning and optical sensors
    • Prototype materials for display and solid-state lighting development
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    Certification & Compliance
    More Introduction

    5,6-Dimethoxyindole: Our Insight as the Chemical Manufacturer

    Experience at the Source: What Sets 5,6-Dimethoxyindole Apart

    We’ve worked hands-on with indole derivatives for decades, refining production approaches based on direct results in the lab and real-world client feedback. 5,6-Dimethoxyindole presents a unique balance of purity, stability, and reliable performance—not just on paper, but batch after batch under varied storage and shipping conditions.

    This compound bears the molecular formula C10H11NO2 and a molar mass of 177.20 g/mol. In our standardized process lines, every run maintains a consistent melting point, crisp structural identity, and a clean chromatographic profile. We always keep moisture and trace impurities beneath established thresholds, focusing on the performance users expect later downstream.

    Clarity on Specifications We’ve Upheld

    Industrial and research partners usually demand consistency to avoid surprises during scale-up, and 5,6-Dimethoxyindole puts that reliability into practice. Our production target hits a purity benchmark of at least 98% by HPLC. We run hard on process control—no shifts in pH, no micro-fluctuations in solvent ratios, and no batch-to-batch guesswork. Each offering features a distinct, pale off-white appearance in crystalline form, which echoes its underlying purity.

    Some users care deeply about solubility for quick incorporation into organic synthesis. We keep our product dry and pack it in moisture-resistant containers, so it dissolves smoothly in most polar organic solvents—methanol, ethanol, DMSO, and DMF remain the top options for seamless process starts. Since we oversee every step of production ourselves, we avoid compatibility headaches that can crop up with less precisely-handled materials.

    Comparing to Related Indoles—Practical Differences We See

    After years of synthesis and technical support, our team notices distinctions that don’t always show up in technical datasheets. For instance, 5,6-Dimethoxyindole’s dual methoxy substitution imparts greater electronic stability than unsubstituted indole. In practice, it often resists decomposition from exposure to air or mild thermal stress, easing concerns over product longevity in busy labs and factories.

    Many chemists look at indole and its derivatives side by side: the jump from 5-methoxyindole to the 5,6-dimethoxy analog brings marked changes in selectivity during further functionalization. In cross-coupling, acylation, or electrophilic substitution reactions, we’ve seen sharper product purity and less unwanted side-product when starting from our material. The two ether groups at the 5- and 6- positions reinforce each other electronically, dampening side reactivity and giving formulation teams fewer headaches downstream.

    The other key advantage: less batch-to-batch variability in melting point and purity readings, especially compared to analogs made with older or less-controlled synthesis methods. We regularly ship material that holds up to high-expectation regulatory and analytical standards, giving researchers and manufacturers a reliable starting block for high-value intermediates.

    Real-World Usage and Applications

    5,6-Dimethoxyindole’s most common role lands in the specialty chemical and pharmaceutical R&D sectors. Our clients regularly use it to build indole-based frameworks when targeting prototype drug candidates, pigment intermediates, and custom organic electronics. Smooth transition from gram- to kilogram-scale use matters, and our consistent manufacturing helps that process. We see most use in synthesis of complex alkaloids or custom dye molecules, where uncontrolled impurities can throw off yield or introduce costly red flags in regulatory filings.

    The compound’s profile makes it ideal for early-stage medicinal chemistry and materials science projects. Modern medchem teams need an indole source that won’t introduce unknowns—no unexpected UV absorption, no trace-level byproducts, and a stable baseline for spectral analysis. Having personally worked with research partners during troubleshooting of synthetic routes, we’ve seen how our tight quality specs keep programs moving forward, not stuck in rework.

    Pigment development is another strength area. 5,6-Dimethoxyindole serves as a core building block for producing eumelanin mimics, unique brown and black shades used in both scientific and commercial formulations. Our pigment customers appreciate that substitution pattern stabilizes color formation and offers a more reproducible endpoint, reducing loss and boosting the value of every production run.

    On the electronics side, a select group of customers leverages its conjugated structure for testing in organic semiconductor prototypes. Purity remains king here—trace contaminants or isomeric byproducts damage the performance of devices made on a micro scale. Since we monitor side reactions so closely, each container delivers only what the formulator expects, with no wild-card degradation products.

    Our Commitment to Quality—Built Through Direct Oversight

    Our chemical plant doesn’t run on autopilot. Years of refining both synthesis and finishing procedures have taught us that direct oversight prevents errors before they start. Every reactor, purification column, and drying oven stays under watchful eyes—data from every stage gets logged and tracked. Instead of skimping on filtration or crystallization steps, we check purity not once, but at every critical juncture.

    Packaging matters just as much. To prevent hydrolysis or trace oxidative breakdown—a risk for most alkoxy-substituted indoles—we keep all finished batches under inert atmosphere until they reach the final container. Only fresh product leaves our facility, and shipments always include full analytical data. If a question ever arises, we can trace each batch back through all steps and raw materials.

    Differences from Bulk-Grade Alternatives

    We see many off-brand or bulk-grade samples circulating in the market. They may carry the same chemical name, but performance can diverge drastically. Unchecked synthesis methods often introduce trace aldehydes, over-alkylated side products, and moisture that simple drying cannot reverse. These flaws show up later—peaks on NMR spectra that confuse analysts, colored impurities that shift pigment shade, or unexplained batch failures during QA.

    Through hands-on experience troubleshooting client issues, we've seen that over-reliance on unverified materials costs time and, sometimes, project viability. Our batches maintain a reproducible purity profile, sparing users from those delays. This comes from managing the chemical complexity ourselves, not outsourcing the tricky steps.

    Feeding into Emerging Science and Industry

    Novel indole derivatives currently sit at the leading edge of synthetic methodology, drug discovery, and specialty materials. By synthesizing and purifying 5,6-Dimethoxyindole in-house, we provide a verified platform for researchers. Our conversations with medchem laboratories reveal that this compound often seeds new explorations in serotonin analogues, neuroactive scaffolds, and non-benzenoid aromatic frameworks.

    Dye and pigment manufacturers use it as a springboard for industrial and textile pigment prototyping. It interacts predictably with classic oxidizing agents and serves as a template for analogs with improved solubility or colorfastness. Because of its robust profile, it doesn’t throw off unpredictable shades in concentrated formulations—a recurring headache with lower grade material.

    Electronics industry partners appreciate the tight purity controls. Low-level metal or halide residue, often ignored by bulk suppliers, can kill device yield. Our cleanroom-sealed final packaging and solvent-washed crystals keep contamination below meaningful detection levels.

    Enhancing Synthesis Routes—Lessons from Process Chemistry

    Synthesis of 5,6-Dimethoxyindole challenges even seasoned chemists. Methoxylation at the 5 and 6 positions calls for precise reagent selection and temperature regulation. We found that close monitoring of substrate purity at every stage makes the biggest difference in output quality. Years ago, minor lapses in timing or insufficiently purified solvents introduced persistent off-products, so now, every run uses freshly distilled solvents and double-checked reactants.

    Catalysts come pre-screened for metallic residues and potential unreactive forms. No step in the multistep route gets rushed; post-reaction neutralization and washing have to be done in specific ways to avoid forming colored side-impurities, which can sneak through less careful processes. The end result: our ongoing process optimizations raised reproducible yields and cut overall impurity burdens, giving R&D users an increasingly clean starting material.

    Supporting Sustainability—Practical Standards, Not Just Promises

    Chemical manufacturing walks a fine line between quality and environmental responsibility. Over the past decade, we’ve swapped in greener solvents, and updated cleaning protocols to minimize waste, all while ensuring the tight purity standards for 5,6-Dimethoxyindole. Our water treatment systems process every stream before discharge, breaking down organic residues that earlier generations of plants might have ignored.

    We avoid high-waste work-up protocols. Spent solvents go through on-site recycling for reuse in compatible process steps. We invest in energy-efficient recrystallization and drying units—these steps drive the lion’s share of emissions in indole chemistry. By tightening process windows and tuning temperatures only as much as synthesis demands, we’re cutting energy draw and giving our crew better working conditions along the way.

    Product shelf-life remains a key factor for sustainability. With a drier, more stable product, users deal with less spoilage and waste while storing, transporting, and consuming their stock. Our clients report increased usable lifetime and more predictable results, especially for larger scale applications where partial decomposition can wipe out margins.

    Solving Problems, Not Masking Them

    We see customers come back for 5,6-Dimethoxyindole after their projects run into roadblocks with unknown impurities or variable product. Rather than hiding issues, we shed light on them. Every batch comes with full spectral and chromatographic data. If a new impurity ever appears, our technical team traces it back through process logs and adjusts the next round accordingly.

    We maintain close partnerships with research chemists and organizations needing high-value organic building blocks—solving problems together through open information and real feedback. This approach builds durable trust: if a batch ever fails to meet the agreed bar, we don’t just offer a replacement, we investigate and resolve the root cause. Our decision-makers actually work in the same buildings as the reactors and the quality labs.

    Tailoring the Product to Advanced Users

    Researchers building new pharmaceuticals, dyes, or specialty ceramics need more than just a chemical label. They need the real-world performance and transparency only a direct manufacturer can guarantee. We don’t just ship solvents and dry powders. Our team monitors new literature, keeps up with regulatory trends, and continually refines purification to meet or exceed the emerging industry benchmarks.

    If a user’s project needs tighter specs—higher purity, specialized particle size, or off-cycle processing—our chemists talk through the goal directly and produce the compound to spec. That sort of flexibility proves its worth especially in early-stage commercial launches or regulatory filings, where unexpected variance means costly delays.

    Why Direct Manufacturing Matters

    The chemical supply chain often blurs lines between producer, repackager, and trader. We have kept our identity rooted in direct manufacturing because we control the chemical reality at every step. This gives customers complete traceability, a line back to the actual process, and the confidence that their product matches the structure, purity, and chemical behavior outlined in our documentation.

    Long relationships with technical buyers have built a culture of active problem-solving and direct accountability. Our engineers and laboratory chemists aren’t shielded by layers of sales or marketing—everyone stays engaged in ensuring that 5,6-Dimethoxyindole supports advanced research and industrial synthesis without hidden surprises.

    Challenges We Tackle Together

    Making this compound isn’t without challenges. Regulatory requirements and analytical demands grow stiffer every year. Our certifications and analysis align with expectations in arylamine occupational exposure, dust handling, and waste stream remediation. We keep on-hand expertise in both chemical synthesis and regulatory compliance—so end-users receive not just raw material, but a clear path through safety and reporting requirements.

    Our facility deals with routine inspections, frequent client audits, and ongoing staff training upgrades. Teams run pilot batches and stress-test purification changes to validate formulas before new lots get sold. If a particular end user’s region calls for custom labeling or additional verifications, we cover those bases at source, so the heat doesn’t fall on the downstream user who might lack direct batch traceability.

    Documented Batch Consistency—A Record Built Over Years

    Years of analytical data underpin our promise. Every batch delivers high-end NMR, HPLC, and GC data logged against reference standards—not just piecemeal tests, but deep analyses. Returning customers ask for the latest batch’s analysis and find the same pattern: tight, narrow peaks; no mysterious signals; and an absence of colored or insoluble debris. From our perspective, this represents more than compliance. It is the trust currency that keeps projects on track.

    We keep technical documentation, spectra, and COA data on all prior runs, which shortens client onboarding and supports regulatory and patent applications for advanced users. Should any analytical anomaly arise, we supply all available documentation without delay so project teams can compare against their own reference data.

    Feedback Loops in Modern Chemical Manufacturing

    Real-world application brings about new requirements. Sometimes, researchers run into an analytical interference they hadn’t anticipated, or process engineers notice subtle shifts in color stability or solubility. Each feedback point comes back to our technical crew, who can reproduce end-user conditions and fine-tune the synthetic route in response—an advantage only available when the chemists talking to researchers are the same ones managing the reactors.

    Direct technical service creates an ongoing feedback cycle that tightens product quality and ensures reliability as new applications for 5,6-Dimethoxyindole emerge. From initial ideation through pilot-scale rollout, we back each partner with practical solutions rooted in our frontline manufacturing experience.

    Supporting the Next Generation of Indole Chemistry

    5,6-Dimethoxyindole keeps finding new roles as science advances. The compound lies at the heart of emerging pigment technologies, next-generation pharmaceutical frameworks, and engineered organic electronics. Our production line, backed by extensive analytical controls and a commitment to operational transparency, stands ready to support each new application—grounded in practical results and enduring user trust, not just specifications on a page.