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6-Chloro-9-Methylpurine

    • Product Name 6-Chloro-9-Methylpurine
    • Alias 6-Chloro-9-methyl-9H-purine
    • Einecs 226-963-4
    • 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

    551904

    Chemical Name 6-Chloro-9-Methylpurine
    Cas Number 3905-92-2
    Molecular Formula C6H5ClN4
    Molecular Weight 168.59 g/mol
    Appearance White to off-white solid
    Melting Point 215-219 °C
    Solubility Slightly soluble in water, soluble in DMSO and ethanol
    Purity Typically ≥98%
    Smiles Cn1cnc2nc(Cl)ncc21
    Inchi InChI=1S/C6H5ClN4/c1-11-3-9-5-4(7)8-2-10-6(5)11/h2-3H,1H3

    As an accredited 6-Chloro-9-Methylpurine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Sealed amber glass bottle containing 25 grams of 6-Chloro-9-Methylpurine, labeled with chemical name, formula, hazard symbols, and handling instructions.
    Shipping **6-Chloro-9-Methylpurine** is shipped in tightly sealed containers under ambient temperature conditions. It is packaged to prevent moisture, light, and contamination exposure. All shipments comply with relevant chemical transport regulations and include appropriate hazard labeling and documentation. Handle with care to avoid spills and direct contact.
    Storage 6-Chloro-9-Methylpurine should be stored in a tightly closed container, in a cool, dry, and well-ventilated area. Protect the chemical from moisture, direct sunlight, and extreme temperatures. Store away from incompatible substances such as strong oxidizers. Ensure proper labeling and keep it in a secure area designated for chemicals to prevent unauthorized access or accidental exposure.
    Application of 6-Chloro-9-Methylpurine

    Applications of 6-Chloro-9-Methylpurine in Industrial Manufacturing

    As a specialized manufacturer of 6-Chloro-9-Methylpurine, we support various advanced industrial applications. Below, we outline the main downstream segments, detailing compliance, dosage, process flow, and resulting final products for each.

    1. Pharmaceutical API Intermediate for Antiviral Drugs

    6-Chloro-9-Methylpurine serves as a key intermediate during the multi-step synthesis of purine-based antiviral active pharmaceutical ingredients, including specialty nucleoside analogues. Downstream manufacturers use it during targeted halogenation steps to develop modified nucleosides with enhanced bioactivity and stability for chronic viral infection treatments. The precise isomeric purity and controlled chlorination required by oral and injectable formulations make quality and traceability essential in this application.

    Industry compliance standards

    • cGMP (Current Good Manufacturing Practice, ICH Q7)
    • USP, Ph. Eur., JP related monographs
    • FDA 21 CFR Parts 210, 211
    • ICH Q3A/B for residual solvents and impurities

    Typical usage ratio

    • Ranges from 0.12 to 0.25 molar equivalents relative to the main nucleoside precursor.
    • Adjusted according to target product yield and required impurity limits.
    • Reactor batch size and stepwise reaction kinetics guide proportion optimization.
    • Excess may be applied to drive complete halogenation where product isolation permits.

    Downstream process integration

    • Feeds directly into the halogenation or methylation step under inert atmosphere.
    • Used in conjunction with polar aprotic solvents for controlled substitution.
    • QC monitored for off-target isomers and residual by-products before next reaction.
    • Precipitated or extracted intermediate proceeds to further alkylation or ribosylation.

    Final product types

    • Active pharmaceutical ingredients for hepatitis B and C antivirals
    • Finished nucleoside drugs (oral, injectable forms)
    • Modified nucleotide prodrugs under clinical development
    • Branded and generic antiviral drug substances

    2. Agrochemical Intermediate for Growth-Regulating Compounds

    In the agricultural sector, downstream formulators deploy this compound as a key precursor when synthesizing plant growth regulators and selective action herbicides based on purine scaffolds. Its unique substitution pattern permits functionalization into bioactive molecules that modulate cytokinins, influencing seed germination and crop vigor. Integrated synthesis addressing chlorination and subsequent modification ensures batch reproducibility and regulatory traceability.

    Industry compliance standards

    • ISO 9001:2015 Quality Management System
    • EU Plant Protection Product Regulation (EC) No 1107/2009
    • EPA 40 CFR Parts 150-189 registration guidelines
    • OECD guidelines for testing of chemicals (environmental fate and ecotoxicity)

    Typical usage ratio

    • 0.15 – 0.4 molar ratio based on target cytokinins or base molecule
    • Adjusted for reaction selectivity and minimized by-product formation
    • Influenced by downstream process yield and cost optimization
    • Refined based on seasonal or regional formulation needs

    Downstream process integration

    • Introduced at nucleophilic substitution or cyclization step within API synthesis
    • Used in continuous flow or batch reactors under controlled pH and temperature
    • Monitoring for residual halides prior to formulation blend
    • Final purification ahead of encapsulation or spraying preparation

    Final product types

    • Commercial plant growth regulators (liquid and granule forms)
    • Selective herbicidal agents for cereals and broadleaf crops
    • Seed-coating enhancement products
    • Formulated agrochemical concentrates for global distribution

    3. Fine Chemical Synthesis of Specialty Nucleosides

    Chemical synthesis laboratories and fine chemical producers employ this material in the stepwise production of methylated or chloro-substituted purine nucleosides. These nucleosides exhibit unique absorption, binding, and signaling functions in advanced biotechnology and diagnostic applications. Downstream integration emphasizes chemical purity, reaction completeness, and batch reproducibility due to high analytical and customer product performance demands.

    Industry compliance standards

    • ISO 9001, ISO 14001 Environmental Management System
    • REACH Registration, Evaluation, Authorisation and Restriction of Chemicals
    • Custom synthesis traceability protocols
    • SDS (Safety Data Sheet, GHS-compliant labeling)

    Typical usage ratio

    • 0.08 – 0.2 molar equivalents relative to total purine nucleoside yield
    • Adjusted by as much as 20% for different downstream functionalization pathways
    • Diluted or concentrated in-line depending on solvent availability and batch size
    • Traced via HPLC assay for post-reaction recovery and refinement

    Downstream process integration

    • Enters as a reaction substrate for nucleophilic substitution and alkylation
    • Combined with protected ribose sugars during base preparation
    • Monitored for completeness using chromatography prior to product isolation
    • Yields characterized by NMR and mass spectrometry before formulation/packaging

    Final product types

    • Specialty nucleoside libraries for research applications
    • Diagnostic assay reagents
    • Biotechnological probes for enzyme screening
    • Molecular standards for nucleic acid synthesis quality control

    4. Precursor for Modified Oligonucleotide Synthesis

    Oligonucleotide manufacturers integrate this material as a precursor in the synthesis of oligonucleotides and aptamer molecules, particularly where methyl or chloro substitutions are essential for resistance against nuclease degradation and enhanced recognition properties in therapeutic candidates. High chemical consistency and low trace residuals are required due to downstream formulation in medical research and emerging therapeutic production.

    Industry compliance standards

    • ISO 13485 Medical Device QMS (for diagnostic oligonucleotides)
    • ISO 9001:2015 for chemical manufacturing
    • Association of Biomolecular Resource Facilities (ABRF) best practices
    • Regulatory documentation as required for clinical research material supply

    Typical usage ratio

    • 0.05 – 0.15 molar equivalents depending on length and structure of target strand
    • Proportion set by downstream CPG solid-phase synthesis protocol
    • Adjustments for incorporation efficiency and chemical modification yield
    • Calculated to minimize residual monomer contamination in final strand

    Downstream process integration

    • Supplied as a nucleotide or pre-activated building block
    • Incorporated by automated DNA/RNA synthesizers via solid-phase chemistry
    • Post-synthesis cleavage and deprotection monitored for modification retention
    • Bulk strands are purified by HPLC and desalted prior to packaging

    Final product types

    • Modified antisense oligonucleotides
    • Aptamers for therapeutic and diagnostic use
    • Stabilized probes for research kits
    • Custom sequence controls for molecular diagnostics
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    Certification & Compliance
    More Introduction

    6-Chloro-9-Methylpurine: A Manufacturer's Perspective

    Understanding the Value of 6-Chloro-9-Methylpurine

    Working in the chemical manufacturing industry over the years, I've seen an array of purine derivatives pass through our production lines. Among these, 6-Chloro-9-Methylpurine stands out for a number of reasons grounded in its chemistry and real-world performance. Each batch we produce reflects a commitment to rigorous control at every stage, from raw material sourcing to quality testing. Experienced eyes catch subtle differences—strength of odor, crystalline appearance, melting behaviors—indicators that the process delivers what research and synthesis demand.

    6-Chloro-9-Methylpurine bears the molecular formula C6H5ClN4. Its defining chloro group at the 6-position, coupled with the methyl group at the 9-position, gives the compound both its name and its unique chemical profile. This profile determines how well it can serve as an intermediate in fields ranging from pharmaceuticals to agricultural chemistry. Producers and researchers often choose this purine derivative as a starting scaffold to develop nucleoside analogs and specialized inhibitors.

    Specifications From the Source

    Every batch we supply targets high purity—frequently 98% or higher by HPLC—because downstream reliability depends on eliminating unwanted byproducts. Over time, we’ve learned that slight shifts in synthetic conditions can impact crystallinity, color, or stability. We routinely check for consistent melting points, usually in the 166–170°C range. Moisture remains one of our strict focus points; trace water or residual solvents undermine both shelf life and reaction predictability. Maintaining that high-grade standard, every lot is tested head-to-toe: appearance, purity by HPLC, residual solvent analysis by GC, and elemental chlorine content.

    Each material gets double-packaged—first nitrogen-flushed bags or ampoules, then sturdy outer containers—before it leaves our facility. We’ve learned firsthand that skip steps or loose standards mean more headaches for teams in downstream labs and pilot plants.

    The Chemical Character and Its Application Value

    Looking at 6-Chloro-9-Methylpurine, one quickly sees its specialty uses. Laboratory and pilot plant teams rely on those halogen and methyl substitutions for targeted nucleophilic substitutions and pathway diversifications. For example, the chloro leaving group at position six allows entry into new nucleoside analogs, used widely in antiviral and anticancer research. The 9-methyl group keeps unwanted alkylation reactions in check, steering synthetic routes efficiently toward customized products.

    Researchers apply 6-Chloro-9-Methylpurine in modified base investigations. Purine chemistry provides the skeleton for many DNA and RNA analogs. Inhibitor design benefits from consistent, pure input materials. In-house studies confirm that product quality correlates directly with higher overall product yields and less purification at later stages. That kind of reliability is difficult to quantify, but every experienced chemist recognizes it during downstream workups: less clogging, clearer separation profiles, and reproducible results batch after batch.

    Distinct Attributes: What Sets This Product Apart

    Anyone who has worked with purines can tell the difference between a freshly synthesized 6-Chloro-9-Methylpurine and a grade that’s suffered from poor storage or casual handling. High-purity, well-processed material maintains color and does not clump. Chemists look for free-flowing, white-to-off-white powder, never beige or smudged with impurities. Whenever the compound exhibits off-colors or clumping, it points to the presence of tars, moisture, or degraded side products, all of which complicate reactions and reduce reproducibility. Our direct oversight of synthesis and packaging means that those risks get managed before anything leaves for delivery.

    Another distinct aspect involves solvent retention. Many third-party resellers and unregulated sources ship purines that reek of acetone or DMF, either from inadequate drying or shortcut post-processing. In our hands, slow thorough evaporation under reduced pressure, followed by vacuum dessication, shrinks trace solvent presence to below detectable levels. Final product passes TGA and headspace GC-MS, confirming both cleanliness and storage stability.

    Production Experience: Crafting Quality at Scale

    Our team deals daily with raw material vetting, ongoing batch tracking, and small-scale pilot runs to optimize production. Methylation and chlorination steps—often straightforward on the blackboard—demand measured reagent additions, careful temperature ramps, and timed workups. During scale-up, even minor exotherms shift side-product formation. Only experience, repetition, and close process monitoring reduce losses and ensure robust yields.

    During post-reaction purification, we rely on multi-stage crystallization and wash cycles. Crude product may contain unreacted starting material, oxidation byproducts, or intermediate pseudo-halogenated compounds. Skilled technicians diagnose these by thin-layer chromatography and adjust purification schemes on the fly. As a manufacturer, equipment flexibility—such as jacketed reactors, variable-speed stirrers, and cold traps—lets us adapt protocols so each production lot meets or exceeds customer’s downstream requirements, even as they evolve year over year.

    Reliable Supply Chain: Direct Accountability

    Unlike traders or loosely affiliated ‘suppliers,’ we maintain direct oversight over every process, from order intake through hands-on production. Our team sources starting purines and methylating agents from credentialed suppliers who run regular audits and provide full analytical testimony. Every incoming batch of raw material triggers internal confirmation—identity, purity, and moisture levels—before green-lighting production. This mitigates risks common in indirect reselling, such as substitution with technical or feed grades carrying high impurities unsuitable for synthetic chemistry.

    Over the years, our on-site analytical lab has sharpened response times, so orders move through production and QA seamlessly. Downtime and delay, in our experience, often originate from third-party confusion or lack of access to process data. Running our own synthesis lines means we give transparent timelines and real-time batch status. Customers who’ve spent months untangling vague delays or shipment mismatches elsewhere recognize the difference instantly. We’ve seen customer projects proceed without interruption, since direct answers and adaptability trump hands-off distribution bottlenecks.

    Comparing Chemical Grade, Stability, and Customization

    Not all 6-Chloro-9-Methylpurine available on the market is created equally. As a manufacturer, we draw distinctions that matter to those making advanced pharmaceuticals or fine chemicals. Laboratory-grade or technical-grade materials cut corners on drying cycles, circumvent full solvent removal, or accept lower melting point ranges. Even minor shortcuts echo downstream—chromatographic traces, slower reactions, failed scale-ups. Our product remains consistent in appearance and chemical fingerprint over months, thanks to sealed containment and climate-controlled storage for both in-process and finished goods.

    Each order receives tracking for traceability—batch numbers link every bag and sample vial to a complete production log, from synthesis date to final packaging. Requests for documentation, whether an HPLC trace, TGA curve, or impurity mapping, are always backed with direct analytical records. Changes in spec or packaging are not left to chance. Laboratories with specialized workflows, exotic solvent systems, or micro-scale glassware rely on products that do not introduce uncertainty or contaminate precision instruments or catalysts.

    Many competing sources repackage materials in less-than-ideal conditions, resulting in absorbent packaging or exposure to airborne moisture. Our direct material control and rapid logistics keep every order within a short window from batch release to delivery, reducing risks of performance loss or handling surprises.

    Environmental and Regulatory Considerations

    Responsible chemical manufacturing moves beyond simple compliance—environmental and worker safety practices shape every decision, from waste stream management to air monitoring. 6-Chloro-9-Methylpurine production can release halogenated byproducts, so operations run in closed-loop systems with active exhaust scrubbing. Only authorized technicians, equipped and briefed on current safety protocols, handle reagents. Internal policies emphasize both containment of reaction hazards and rapid addressing of accidental releases during maintenance or cleanout.

    Finished goods are tested not just for purity, but also for the absence of regulated substances. Documentation matches batch analytics with regional and international standards—REACH, EPA guidelines, and local transport laws. Open communication keeps downstream users aware of safety and handling protocols. We frequently update our safety data sheets as global expectations evolve. Manufacturing with these protocols in place often exceeds what third-party, contract-packed goods can guarantee, especially for clients with low tolerance for regulatory exposure or compliance surprises.

    Supporting Research and Innovation

    Over the years, customers have brought us demanding projects—solid-phase synthesis, combinatorial chemistry, pilot intermediates for drug discovery. 6-Chloro-9-Methylpurine consistently draws attention from researchers seeking finely tuned purine skeletons to launch new biologically active compounds. With every project, we offer insights from large-scale synthesis, package testing, and batch control. Researchers gain not just a bottle of chemical, but a partner attuned to yield maximization, reproducibility, and process documentation.

    The foundation for future innovation lies in reliable upstream sourcing. We regularly field requests for modified lots: extra-dry, extended sieve storage, or particular bulk packaging for glove box introduction. Each customization comes with one-on-one consultation from process chemists. We discuss not just what is possible, but also where limitations arise—how a minute change in crystallization solvent can alter product profile, where temperature excursions during shipping may impact purity, or how best to balance scale with shelf life. That kind of real-world troubleshooting only comes from firsthand production experience, not speculative middlemen or catalog pushers.

    Direct support extends into feedback cycles—users who encounter process bottlenecks or unexpected incompatibilities receive technical assistance. We have on more than one occasion re-optimized a drying run or flask scale-up to match customer feedback. These lessons seed further improvements in both routine and specialty production, tightening the cycle of quality and customer benefit.

    Common Challenges and How We Address Them

    Producing 6-Chloro-9-Methylpurine at industrial scale rarely follows a linear script. Unexpected variables—labile intermediates, shifting impurity loads in starting materials, or subtle solvent effects—push technical teams to adapt quickly. Early lessons taught us never to underestimate the effect of overlooked trace contaminants or uncontrolled process water. Each challenge brings concrete refinement: batch filtration upgrades, investment in hygroscopic-resistant packaging, better staff training, or expanded in-process monitoring.

    Even the seemingly minor details—ambient humidity in packaging rooms, dust capture and handling after manual weighing, routine recalibrations on analytical instruments—make measurable impacts on product consistency. Complacency anywhere along this chain risks both customer goodwill and technical achievement. Years of repeated process optimization, downtime troubleshooting, and cross-checking with end-users have brought our practices into alignment with the highest expectations.

    Our team does not stop at compliance or minimum thresholds. Direct operator feedback shapes protocol improvements. Real-world complications, from temperature spikes in transport chains to last-minute customer spec changes, demand responsive systems. Onsite flexibility, guided by data, sets our operation apart and positions us as a partner rather than just a supplier.

    Long-Term Commitment: Sustaining Trust and Quality

    Serving researchers and industrial producers means keeping promises about delivery, documentation, and quality. Over years of manufacturing 6-Chloro-9-Methylpurine, we’ve watched the ripple effects of reliable sourcing. Labs hit their deadlines. Scale-up projects flow from benchtop to pilot plant without last-minute disruptions. Toxicological studies run with confidence, knowing analytical records and process transparency back every shipment.

    Our commitment extends to continuity planning. We track supply chain vulnerabilities, keep buffer inventory on hand, and update contingency protocols to meet unplanned surges. Every change—new regulatory requirement, incoming analytical tool, or updated storage facility—spares customers from risk exposure. Few things matter more to research and manufacturing operations than knowing their trusted supplier is prepared, present, and accountable for every stage of the process.

    Perspective Gained Through Years in Chemical Manufacturing

    Direct involvement in manufacturing sharpens awareness of what truly counts—reliable materials, validated processes, and transparent support. Each lot of 6-Chloro-9-Methylpurine we produce reaffirms that excellence depends on more than paperwork and glossy data sheets. Hands-on experience, investment in people and equipment, and willingness to engage directly with downstream problems build lasting value into every shipment.

    Every customer, whether running a small academic group or a multinational process development team, deserves prompt access to trusted materials, clear communication, and process flexibility. Our history in this industry tells a simple story: manufacturers add real value when they move beyond minimum requirements, anticipate project needs, and support problem-solving through direct technical expertise.

    Conclusion: Why Direct Manufacturing Matters

    6-Chloro-9-Methylpurine is much more than a catalog entry—it represents a convergence of process optimization, industry expertise, and attention to detail, shaped over many production cycles and varied customer requirements. From tailored synthesis conditions to meticulous final packaging, our manufacturing operation, staffed with skilled technicians and chemists, brings stability and advancement to research teams who demand more than basic materials.

    Our direct accountability, investment in research support, and practical process improvements enable every user to achieve better results. We believe that open communication and continuous feedback are essential for sustained progress and customer satisfaction in the chemical industry. For us, quality production is not just a statement—it underpins every order and relationship we build.