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Demecolcine

    • Product Name Demecolcine
    • Alias Colcemid
    • Einecs 204-073-7
    • 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
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    Specifications

    HS Code

    639764

    CAS_Number 477-30-5
    Chemical_Formula C21H25NO5
    Molecular_Weight 371.43 g/mol
    Synonyms Colcemid; N-deacetyl-N-methylcolchicine
    Appearance Yellow crystalline powder
    Solubility_in_Water Slightly soluble
    Melting_Point 151-153°C
    Storage_Temperature 2-8°C
    Purity ≥98%
    Usage Mitotic inhibitor for karyotyping
    Mechanism_of_Action Inhibits microtubule polymerization
    Hazard_Statements Toxic if swallowed, carcinogenic
    IUPAC_Name N-deacetyl-N-methylcolchicine

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

    Packing & Storage
    Packing Demecolcine is typically supplied in amber glass vials containing 10 mg powder, sealed with a rubber stopper and aluminum cap.
    Shipping Demecolcine is shipped as a hazardous chemical under stringent regulations. It is securely packaged in certified containers to prevent leaks and contamination. Shipping typically requires temperature control and proper labeling in accordance with international transport guidelines. Only licensed carriers and authorized personnel handle the transport to ensure safety and compliance.
    Storage Demecolcine should be stored at 2–8°C (refrigerated temperature), protected from light, and tightly sealed in its original container. Avoid exposure to moisture and direct sunlight. If it is in solution form, store as indicated by the manufacturer, typically at -20°C for long-term storage. Ensure the area is secure and accessible only to authorized personnel, following all safety and handling guidelines.
    Application of Demecolcine

    Applications of Demecolcine in Industrial Manufacturing

    Demecolcine is a specialized colchicine analog with defined applications in biotechnological and pharmaceutical manufacturing environments. As an original chemical raw material manufacturer, we support global B2B partners with consistent quality and regulatory support for diverse downstream usage. Below we introduce major industrial application scenarios, each with specified compliance, process details, and end-product links.

    1. Chromosome Preparation for Cytogenetics and Karyotyping Labs

    Clinical cytogenetics laboratories and research facilities use demecolcine extensively to arrest cultured cells in metaphase by disrupting microtubule polymerization, which is crucial for G-banding and other chromosome staining protocols. The compound is introduced after initial cell culturing, before harvesting for chromosome spread preparation. Laboratories achieve repeatable cell cycle arrest by calibrating dosage relative to cell line sensitivity, ensuring clear metaphase spreads for chromosomal analysis—supporting genetic diagnostics and research on chromosomal aberrations.

    Industry compliance standards

    • CLIA (Clinical Laboratory Improvement Amendments, USA)
    • ISO 15189:2012 (Medical laboratories — Requirements for quality and competence)
    • CAP Accreditation for Cytogenetics (College of American Pathologists)
    • National and regional genetic testing guidelines (such as ACMG, ESHG)

    Typical usage ratio

    • 0.05–0.2 μg/mL in culture media for mammalian cell lines; exact concentration adjusted based on species, cell type, and culture duration

    Downstream process integration

    • Added to cell cultures during late log phase to accumulate metaphase cells, followed by hypotonic treatment and fixation for slide preparation

    Final product types

    • Metaphase chromosome spreads for karyotyping
    • FISH (Fluorescence In Situ Hybridization) slide preparations
    • Archived cytogenetic analyses for clinical genetics reports

    2. Veterinary Polyploidy Breeding Programs

    Demecolcine sees targeted use in controlled veterinary breeding operations, particularly within aquatic species and certain experimental livestock, where breeders induce polyploidy for trait enhancement. The agent is administered at specific embryonic stages to block spindle fiber formation, resulting in tetraploid or triploid embryos. These polyploid animals display desired production or research characteristics, such as sterility and increased growth rates, enhancing aquaculture and livestock productivity.

    Industry compliance standards

    • Local and national animal breeding regulations
    • OIE (World Organisation for Animal Health) Terraquaculture welfare standards
    • FAO Guidelines on Responsible Aquaculture
    • ISO 22000 (Food Safety Management Systems) for downstream food products

    Typical usage ratio

    • 0.02–0.1 μg/mL in fertilized egg suspensions, precise dosing determined by species and embryo developmental stage

    Downstream process integration

    • Immersion or microinjection into fertilized eggs. Treatment occurs during early cleavage to create triploid or tetraploid individuals, followed by standard grow-out protocols

    Final product types

    • Triploid and tetraploid fish or shellfish for aquaculture (e.g., oysters, salmon)
    • Polyploid breeding lines supplied to livestock research institutions
    • Sterile aquatic stocks for controlled fisheries management

    3. Monoclonal Antibody (mAb) Hybridoma Production

    In industrial bioprocessing, demecolcine plays a role in the creation of hybridomas for monoclonal antibody manufacturing. Cell fusion requires alignment of chromosomes to enable efficient hybrid cell formation. Manufacturers introduce the agent to facilitate chromosome arrest, leading to higher fusion rates under controlled protocols. The process supports large-scale production of mAb cell lines that supply pharmaceutical, diagnostic, and research markets.

    Industry compliance standards

    • ICH Q5A/B (Quality of Biotechnological Products)
    • FDA cGMP (21 CFR Parts 210, 211, and 600)
    • EU GMP Annex 2 for biologicals
    • ISO 9001 for in vitro diagnostic components

    Typical usage ratio

    • 0.05–0.2 μg/mL; the dose varies according to the myeloma and spleen cell types, with optimization during method development

    Downstream process integration

    • Treatment of parental cell populations just prior to PEG-mediated cell fusion to promote successful hybridoma clone formation

    Final product types

    • Stabile hybridoma cell lines for mAb production
    • Purified monoclonal antibodies for pharmaceuticals or diagnostics
    • Research-grade antibody reagents

    4. Cytotoxicity Reference Agent in Pharmaceutical QC

    Pharmaceutical quality control laboratories apply demecolcine as a reference cytotoxic compound in validated in vitro assays that screen potential anticancer API candidates or raw material impurities for mitotic disruption. By providing a reliable positive control, labs compare cytostatic effects against known standards, ensuring instrument calibration and batch consistency, particularly in early phase compound screening and GMP analytics.

    Industry compliance standards

    • ICH Q2 (Validation of Analytical Procedures)
    • Ph. Eur. Monograph 2.6.12 (Cytotoxicity assays of biological materials)
    • USP <1030> (Biological Assay Validation)
    • GLP (Good Laboratory Practice) requirements

    Typical usage ratio

    • 0.01–0.1 μg/mL as assay positive control; concentrations are matched to cell type sensitivity and assay protocol specifics

    Downstream process integration

    • Prepared as benchmarking standard, typically dissolved in assay media just before cell exposure in microplate-based cytotoxicity or growth inhibition assays

    Final product types

    • Cytotoxicity assay results supporting API development dossiers
    • Validated method performance data for regulatory filings
    • Biological QC records for batch release

    5. Cell Cycle Research and Oncology Mechanism Studies

    Academic and preclinical research institutions utilize demecolcine for precise arrest of cells at metaphase, facilitating cell cycle phase characterization and mechanistic exploration of spindle assembly checkpoint pathways. By integrating the compound directly into cell culture workflows, researchers reliably synchronize populations, enabling downstream studies in cancer biology, checkpoint inhibition screening, and mitosis-targeted compound evaluation.

    Industry compliance standards

    • Institutional biosafety committee protocols
    • GLP requirements in preclinical research
    • NIH Guidelines for Research Involving Recombinant or Synthetic Nucleic Acid Molecules
    • Country-specific laboratory safety and handling standards

    Typical usage ratio

    • 0.05–0.15 μg/mL; titration occurs according to cell origin and experiment requirements, with exposure times typically ranging 2–6 hours

    Downstream process integration

    • Administered in cell culture media during synchronized culture experiments, often preceding harvest for flow cytometry or western blotting

    Final product types

    • Synchronized cell pellets for molecular analysis
    • Published datasets in peer-reviewed research
    • Experimental reports supporting oncology drug discovery
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    Certification & Compliance
    More Introduction

    Introducing Demecolcine: A Closer Look from the Manufacturer's Bench

    Understanding What Demecolcine Really Offers

    The story of Demecolcine starts on our production floor—part science, part precision. Over the years, we’ve learned that this compound sets itself apart in cytogenetics and biomedical research, not just because of its capabilities but due to the attention needed at each step of production. Demecolcine’s utility follows its chemical roots: colchicine’s well-known activity, but fine-tuned for research on cell cycles and chromosomal manipulation without the same level of toxicity. Researchers usually recognize Demecolcine under the molecular formula C24H27NO5, with a molecular weight hovering near 409.5 g/mol. The substance takes a yellowish crystalline form, with good solubility in both water and alcohol, which helps labs avoid the headaches sometimes faced using other cell cycle inhibitors.

    Mostly used to arrest cells in metaphase, Demecolcine holds value for scientists prepping karyotypes or sorting cells for advanced studies. Reliability sits at the root of why so many rely on this model: steady, predictable, and less aggressive than colchicine itself. Our Demecolcine typically appears in purity grades above 98%, after passing liquid chromatography and rigorous quality checks through every batch. By refining the purification process with modern extraction and crystallization techniques, we keep impurity profiles consistently low—a crucial factor for cytological studies, where a small contaminant sends months of work back to square one.

    From Raw Material to Refined Reagent

    Selecting source materials always shapes the quality of the finished compound. We get our raw colchicine from verified suppliers who cultivate and extract the base alkaloid using environmentally mindful practices. Every incoming batch is assayed before it even touches the production line, and only after multiple rounds of checks does it enter synthesis.

    Demecolcine’s manufacturing runs through methylation and reduction processes carefully controlled for temperature, pH, and reaction time. During this stage, tiny differences in timing or solvent purity change final yield or risk residual byproducts. We rely on real-time chromatographic analysis—not just spot-checks, but system-wide monitoring—so our staff can make informed adjustments right on the floor. This investment in feedback loops adds consistency to every batch, which researchers notice right away when microscopy and cell division rates remain steady week after week.

    Materials built with such care rarely make the headlines, yet without steady quality, labs lose entire grant cycles. In nearly twenty years, we’ve seen labs around the world come back for replens because switching lots or suppliers throws off comparative studies. There’s a kind of indirect testament here—not in headlines or citations, but in the quiet reliability that lets other teams publish on time.

    Inside the Lab: Applications and Hands-On Experience

    You won’t find Demecolcine’s value on a datasheet. It becomes apparent as soon as the bottle comes out during metaphase arrest. Researchers preparing for G-banding or FISH assays favor it for its lower toxicity compared to colchicine. Unlike harsher spindle poisons, Demecolcine halts mitosis with less lingering cell damage and fewer artifacts, bringing greater clarity when viewed under a phase-contrast or fluorescence microscope. This gentler touch allows for better chromosome spreading, which gives sharper, more useful karyotypes.

    We often hear from lab techs that Demecolcine’s solubility—easy to dissolve and filter—eases a lot of the hassle during protocol prep. Tasks inside IVF clinics and genetic labs depend on this reliability. Even small differences, like the formation of less precipitate during dissolution, can spare a day’s work. Unlike colchicine’s frequent tendency to clump or require repeated dissolution, Demecolcine goes smoothly into solution through light agitation at room temperature.

    Applications broaden further than cytogenetics. Cell fusion techniques, animal reproduction studies, and somatic cell nuclear transfer all depend on synchronizing or manipulating the cell cycle. Here too, Demecolcine’s track record supports its reputation: narrow batch-to-batch consistency and clear labeling ensure experiments won’t falter because of unexpected contaminants or mislabeling.

    Our technical team often helps with protocol optimizations. In IVF workflows, for example, precise dosage windows mean the difference between normal cleavage and chromosomal missegregation. We walk researchers through dosage titrations, both through documentation and direct technical support, since published literature offers only approximate starting points—real work at the lab bench requires iterative optimization, and lot-specific guidance supports techs at the bench.

    Why Bother: Choosing Demecolcine Over Colchicine or Other Spindle Inhibitors

    People new to cytogenetics ask if Demecolcine really offers benefits over colchicine, nocodazole, or the various taxanes. Each serves a purpose, but Demecolcine wins attention for several reasons. Compared to colchicine, Demecolcine arrests metaphase with lower cellular toxicity, leading to three notable improvements: cells fix better, slides hold their chromosomes more cleanly, and personnel are exposed to fewer health risks during handling. Nocodazole and taxol, though potent, bring greater instability in commercial stock quality or require more specialized dissolution.

    Our manufacturing observations find most labs achieve higher metaphase indices and fewer cytological artifacts using Demecolcine. This improvement becomes vital for rare karyotype studies or FISH probes where each cell counts. Slide prep time drops, and lab workers spend less time troubleshooting because the compound behaves consistently—even after repeated stock aliquoting or minor solvent changes.

    The risk profile also changes. Colchicine’s propensity for accidental overexposure, both for the cells and technicians, means more time spent with safety officers and less time at the bench. Demecolcine’s safety margin remains wider, provided it’s still handled with respect. We’ve redesigned secondary packaging, incorporated clearer labeling, and offer updated storage recommendations based on post-shipment tests, because stability at 2–8°C isn’t always enough when international freight faces delays.

    Supporting Quality Through the Supply Chain

    Quality always starts upstream. We dedicate a substantial portion of our annual budget to verifying all primary and secondary sources of starting alkaloids. Each shipment receives its own reference spectra archived in our digital QC library, so fractions can be precisely back-traced if a customer ever finds a deviation. This protocol has helped us resolve rare batch variations in under forty-eight hours—an advantage of having manufacturing and analytical teams onsite, not separated by layers of importers and relabelers.

    Through the years, we’ve worked directly with cytogenetic labs, field researchers, and fertility clinics to set tighter controls. In some markets, researchers face more relaxed storage conditions — so our team double-checks freeze-thaw resilience and solubility checks at both high and low storage temperatures. This kind of direct feedback often doesn’t reach chemical traders, but, in a manufacturing environment, real customer concerns drive incremental improvement. Regular audits and annual reviews ensure our supply chain adapts to shifting regulatory or customs requirements.

    We keep batch records well past regulatory minimums since retrospective analysis sometimes finds subtle differences—seasonal humidity or trace solvents from upstream lots, for instance—that shrink practical yields for some users. If a batch ever fails internal QA, the entire lot is held, sometimes scrapped, and never sees the market. That decision pinches short-term profits but shields users from costly troubleshooting or repeat experiments.

    Cross-Industry Adoption and Technical Integration

    Demecolcine’s direct users span cytogenetics, plant breeding, and mammalian cell culture. Labs running high-throughput karyotyping operations purchase in large lots, requiring assurance that bottle one and bottle one hundred act identically. Smaller IVF clinics, on the other hand, run fewer cycles but cannot accept even minor batch differences.

    We’ve noticed shifting applications over the last decade. Twenty years ago, nearly all Demecolcine went to university karyotyping labs and agrigenomics researchers. Now, a sizable portion ends up in clinical cytogenetic diagnostics, commercial IVF, and more recently, CRISPR-related cell cycle experiments. Demecolcine’s lower toxicity helps support these newer, more sensitive techniques; even minor increases in cell viability pay off with higher post-editing survival rates.

    Technical support runs year-round. Not all users share the same expectations or workflows, so we try to keep protocols flexible—adapting to lab-specific needs while warning about common pitfalls. Our staff sees submitted troubleshooting logs, which reveal trends: sometimes a switch to a different batch uncovers subtle interferences—solvent residues, glassware leaching, or shifts in room temperature. We log and address each report, feeding observations back into process training.

    It’s rare for a month to go by without someone asking for tips on dissolving Demecolcine for in vitro applications or seeking reassurance about shelf life after repeated freeze-thaws. We study stability not only at ideal refrigerator conditions but after cycling through temporary room temperatures, since not all storage runs by the book. Extended shelf-testing provides confidence in published expiration dates, and direct customer queries inspire real updates to batch labels and usage guides.

    Responding to Regulatory and Environmental Responsibility

    Any manufacturer using alkaloid precursors must account for regulatory supervision; this is not just paperwork but shapes how the whole team approaches their work. Our system begins with careful lot registration, tracked from initial extraction. Each stage produces digital and hard-copy logs, creating full traceability for every outgoing bottle.

    Waste handling, solvent recovery, and emission controls all get attention, not just because of regulations but due to changing social expectations. Several years back we overhauled our solvent recycling plant after feedback from local environmental review boards. We now keep annual emissions below enforced limits. Water effluent is double-tested both internally and by outside laboratories before discharge, maintaining a healthy relationship with our neighbors and keeping production sustainable.

    Packaging adapts too—it has shifted over the last decade from single-use plastics to more robust recyclable glass and cardboard combinations. To limit breakage during transit, especially for international customers, we periodically stress-test packaging designs and revise them after feedback from customers and logistic partners. A robust package protects not just the chemical but a complete workflow in a research lab—every hour saved on prep or troubleshooting starts at the moment the bottle arrives fully intact.

    Challenges Facing the Field and Shared Solutions

    Challenges show up all along the journey from synthesis to bench. Shipping delays, customs holdups, and shifting import regulations create uncertainty for end-users. We face these by pre-positioning product in regional warehouses and staggering production, so delays in one location don't halt the rhythm of supply. In rare cases where weather or customs keep shipments sidelined, we provide real-time tracking and direct updates, allowing labs to shift their project schedules.

    Some new regulatory barriers have recently cropped up, especially around the international movement of alkaloid-based reagents. Our logistics division keeps up with these changes, ensuring that labels, paperwork, and registrations align with current import rules. We keep open lines with customs brokers and train logistics staff in both technical details and international compliance—at no remove from the chemical itself.

    Market expectations grow: more researchers demand higher transparency about raw materials, greener manufacturing methods, and clear documentation covering every outcome. In response, we share the full analytical profile of every batch, including chromatograms and residual solvent data, right on our user portal. We realize that each lab carries its own unique compliance policies; by over-reporting detail, we help researchers handle their audits with smoother documentation.

    On the environmental side, tighter controls on waste solvents and chemical runoff require continual upgrades to our plant infrastructure. Rather than seeing these as hurdles, we take the opportunity to test new solvent-free isolation methods and improve energy efficiency. These changes improve performance in the plant and resonate with research teams aiming to deliver sustainable science.

    Continued Commitment from a Manufacturer’s Perspective

    Our experience with Demecolcine didn’t begin with market trends or quarterly reports. It’s built from direct exchanges with scientists and lab technicians who spend months troubleshooting slides and running repetitive cell culture routines. Each time we see an experiment come together—a clear metaphase spread, a batch of embryos ready on schedule—we know stability in basic materials pays off many times over.

    Listening to feedback keeps our production line honest. Calls about clumping, color shifts, or packaging damage translate into immediate checks on batch logs or shipping records, and our quality assurance team treats each call as a chance to improve. Staff run pilots for new purification columns or solvent upgrades and then follow the same lot into customer labs, tracking usage, and noting successes and failures. This cycle creates a feedback loop between production, shipment, and the user’s bench.

    We value partnerships with researchers who take the time to report performance metrics, whether positive or critical—these insights drive steady improvement in manufacturing and customer service. By treating Demecolcine as more than a chemical commodity, but as a vital link in the research workflow, we honor the painstaking labor of geneticists, embryologists, and cell biologists.

    The chemical’s journey doesn’t end at our gate. Its performance in hands-on research, every measurable improvement in yield or reduction in toxicity, traces back to choices made on our floor. By maintaining open dialogue and a readiness to adapt, we foster relationships with scientists and help advance their work, one bottle at a time.