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1H-Indazol-5-ol

    • Product Name 1H-Indazol-5-ol
    • Alias 5-Hydroxy-1H-indazole
    • Einecs 611-338-1
    • 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
    VTB
    Specifications

    HS Code

    948731

    Iupac Name 1H-Indazol-5-ol
    Molecular Formula C7H6N2O
    Molar Mass 134.14 g/mol
    Cas Number 5117-19-1
    Pubchem Cid 5363277
    Appearance White to light beige solid
    Melting Point 220-224 °C
    Solubility In Water Slightly soluble
    Smiles c1cc2c(cc1O)n[nH]c2
    Inchi InChI=1S/C7H6N2O/c10-5-1-2-7-6(3-5)8-9-4-7/h1-4,10H,(H,8,9)

    As an accredited 1H-Indazol-5-ol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1H-Indazol-5-ol, 5 grams, supplied in a labeled amber glass bottle with a tamper-evident cap, for laboratory use.
    Shipping 1H-Indazol-5-ol is shipped in tightly sealed containers to prevent moisture and light exposure. Packaging complies with chemical safety regulations, typically in amber glass bottles. The shipment includes proper labeling, safety documentation, and may require temperature controls. Handling and transport must follow local and international hazardous material guidelines.
    Storage 1H-Indazol-5-ol should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from heat, moisture, and incompatible substances such as strong oxidizers. Protect from light and avoid prolonged exposure to air. Ensure proper labeling and keep away from sources of ignition. Use appropriate personal protective equipment when handling the chemical.
    Application of 1H-Indazol-5-ol

    Applications of 1H-Indazol-5-ol in Industrial Manufacturing

    As a leading raw material producer, we supply 1H-Indazol-5-ol to multiple specialized downstream sectors. Below, we describe key industrial manufacturing scenarios with focus on usage parameters, regulatory frameworks, process fit, and typical final goods.

    1. Pharmaceutical API Intermediate Synthesis

    1H-Indazol-5-ol supports the multi-step synthesis of complex heterocyclic pharmaceuticals, most notably in the production of kinase inhibitors and anti-neoplastic agents. Downstream processors use its reactive hydroxy-indazole moiety to build indazolone fragments found in various patented and generic small molecule APIs. Our customers integrate this compound at the core intermediate stage, balancing purity requirements, handling protocols, and yield optimization according to global cGMP standards.

    Industry compliance standards

    • ICH Q7A Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • EU EudraLex Vol 4, Part II for APIs
    • 21 CFR Part 211 (US FDA cGMP for finished pharmaceuticals)
    • Relevant pharmacopoeias (USP, EP reference standards for process solvents/impurities)

    Typical usage ratio

    • Integrated at 1.5–8% mol ratio relative to downstream substrate loading, adjusted based on reaction path and yield requirements. Process development batches may use pilot ratios for scale-up validation.

    Downstream process integration

    • Introduced during heterocycle construction or selective hydroxylation phases
    • Optimized for catalytic or stoichiometric reaction steps under nitrogen atmosphere
    • Requires stage-specific QC for purity, trace solvents, and isomeric byproducts
    • Handled under validated temperature and moisture control to prevent degradation

    Final product types

    • Kinase inhibitor APIs under patent or generic portfolios
    • Oncology drug intermediates for final step coupling
    • Specialty anti-infective and CNS-active pharmaceutical substances
    • Research chemical standards for clinical candidate libraries

    2. Agrochemical Active Ingredient Development

    Many agrochemical formulators use 1H-Indazol-5-ol to construct intermediate structures for new-generation herbicides and insecticides. Its indazole core enables the assembly of ring systems with high specificity for enzyme inhibition in pest management. Downstream users process the material with strict raw material traceability and process audits, especially for products targeting regulated global markets.

    Industry compliance standards

    • OECD Principles of Good Laboratory Practice
    • FAO/WHO Specifications for Plant Protection Products
    • ISO 9001:2015 Quality Management Systems
    • Regulation (EC) No 1107/2009 (EU Plant Protection Products Authorization)

    Typical usage ratio

    • Usually set at 0.5–3% in key condensation or cyclization stages, depending on the target compound structure and crop safety data. Formulation scientists may carry out optimization trials for registration adaptability.

    Downstream process integration

    • Charged to closed reaction vessels for ring-forming reactions
    • Subjected to in-process controls for purity and thermal stability
    • Extracted and purified using solvent crystallization or preparative chromatography
    • Feeds into technical grade active ingredient preparation for further formulation

    Final product types

    • Selective herbicide actives for cereal or soy cultivation
    • Broad-spectrum insecticide seed treatments
    • Intermediates for fungicide pipeline compounds
    • Regulatory submitted reference standards for residue testing

    3. Specialty Dye and Pigment Synthesis

    Manufacturers in the functional dye sector use 1H-Indazol-5-ol to engineer intermediates for N-heterocyclic colorants, including those for electronic displays and specialty coatings. Its unique ring system enhances chromophore stability and tuning for UV-visible absorption. Process engineers must comply with environmental and safety mandates during synthesis scale-up and occupational monitoring.

    Industry compliance standards

    • EN 71-3 Safety of Toys (Migration of pigments—relevant for specialty dyes)
    • REACH Regulation (EC) No 1907/2006 for substances in finished chemicals
    • ISO 9001:2015 and ISO 14001:2015 for manufacturing and EHS management
    • State/local emission and environmental monitoring requirements (VOC, wastewater standards)

    Typical usage ratio

    • Adopted at 2–7% of total chromophore feedstock for controlled molecular architecture. Depending on final dye requirements, process chemists may adjust upwards for high-purity sectors.

    Downstream process integration

    • Applied in diazo coupling or condensation polymerization stages
    • Reacts to form colored complexes with extended π-conjugation
    • Purified with advanced solvent extraction to remove raw impurities
    • Dispersion and QC in aqueous or solvent-based dye systems

    Final product types

    • High-performance display dyes (OLED, LCD applications)
    • Specialty inks for security printing
    • Functional coatings for plastics and advanced materials
    • Intermediates for permanent textile colorants

    4. Chemical Reference Standards for Analytical Laboratories

    Certified reference standard providers frequently request 1H-Indazol-5-ol with batch traceability for use in pharmaceutical, environmental, and forensic laboratories. Its well-defined structure serves as a primary or secondary reference for analytical method validation, impurity profiling, and quality control of related indazole derivatives. Our facility ensures full documentation, stability studies, and purity reporting to meet regulatory and audit requirements.

    Industry compliance standards

    • ISO 17034 General Requirements for the Competence of Reference Material Producers
    • ISO/IEC 17025 Testing and Calibration Laboratories
    • FDA/EMA guidelines for validation of analytical procedures
    • USP/NF and EP for reference and working standard certification

    Typical usage ratio

    • Prepared in 10–100 mg or custom-weight formats per laboratory calibration protocol. Users dilute or spike per specific method sensitivity.

    Downstream process integration

    • Packaged in tamper-evident vials under inert atmosphere
    • QC release after NMR, MS, HPLC purity confirmation
    • Shipped with full CoA and MSDS per lot
    • Stored at controlled room temperature or refrigerated, with re-certification as required

    Final product types

    • Primary reference standards for HPLC/GC quantification
    • Pharmaceutical impurity standards for ICH-compliant drug analysis
    • Forensic chemical markers in toxicology labs
    • Research laboratory working standards for synthesis validation
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    Competitive 1H-Indazol-5-ol prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    1H-Indazol-5-ol: Real-World Experience from the Manufacturer’s Perspective

    A Closer Look at 1H-Indazol-5-ol in Today’s Chemical Landscape

    In the day-to-day operations of chemical manufacturing, certain compounds stand out because of their reliability, real value in research and industry, and dependable results. 1H-Indazol-5-ol, with its distinctive molecular structure, has steadily built a reputation among our partners and clients who expect consistent results. As people who spend long hours in production labs and at the reactor line, we approach each batch with careful monitoring because we know that researchers and process engineers rely on exacting consistency for their projects.

    What Makes 1H-Indazol-5-ol Special in Our Production Line?

    1H-Indazol-5-ol doesn’t just show up on someone’s chemical order sheet by accident. After working with hundreds of intermediates and specialty molecules, we see the true cost of impurities, inconsistent supply, and poorly controlled production. This molecule stands out due to its well-defined properties. Most typical batches have a purity above 98%, confirmed by HPLC and NMR, so there’s no guesswork at the receiving dock.

    Our experience produces batches at a 100g to multi-kilogram scale. Scaling-up from gram-sized R&D requests to larger lots for pilot projects or ongoing synthesis runs exposes a manufacturer’s skill—small-scale chemistry does not simply translate to larger reactors without headaches. Temperature, pressure, feed rate, and work-up all call for adaptations. During solvent swaps or recrystallizations, even minor changes in water or organic solvent quality can play havoc with final purity. We watch every parameter and log deviations, and regular feedback from returning customers proves our method holds up in practice.

    Common Uses Reported by Our Clients

    Many order 1H-Indazol-5-ol as a key intermediate in pharmaceutical work, aiming to synthesize heterocyclic scaffolds or more complex drug candidates. This compound offers a balance of reactivity on the ring and stability during difficult transformations. Medchem teams sometimes prefer it as a building block for kinase inhibitor libraries; others are investigating ways to harness its properties for agrochemical development. We have seen it used as a coupling partner in palladium-catalyzed reactions, especially where site-specific functionalization on the indazole core is required.

    Direct feedback from academic labs suggests 1H-Indazol-5-ol outperforms structurally similar aromatic compounds—such as 5-nitroindazole or indazole-3-carboxylic acid—when selectivity in functional group introduction is a major concern. Others choose it because its hydroxyl handle proves less sterically demanding and doesn’t introduce the same electronic complications as halogenated analogs. We notice researchers appreciate a product that saves a purification step: fewer by-products means less time at the chromatography bench.

    Differences Compared to Other Aromatic Heterocycles

    We handle indazoles, benzotriazoles, imidazoles, and dozens of related N-heterocycles in the factory every year. Direct comparison tells us that 1H-Indazol-5-ol sets itself apart due to that hydroxyl group. Many clients initially try unsubstituted indazole, then return to order the 5-ol version after running into solubility or selectivity issues downstream. The difference appears once purification steps grow more involved or when the final product’s spectral data turns out muddy.

    Our own team found that the 5-hydroxy substitution allows for straightforward downstream chemistry. It activates the ring toward further modification without making the molecule awkward to handle or overly reactive. Staff who run pilot-scale syntheses prefer working with it, describing smoother dissolutions, more manageable filtrations, and fewer side products. In contrast, the 5-carboxy or 5-nitro derivatives tend to complicate both isolation and subsequent synthetic steps, often tying up valuable resources in repeated purification.

    Quality We’ve Learned to Prioritize

    Anyone can make a small amount of 1H-Indazol-5-ol at a bench scale. Mass-producing it consistently, batch after batch, is a different kind of problem. We maintain rigorous sterility, with high-purity solvents, thorough glassware cleaning routines, and repeated tests on intermediates to make sure reactions go to completion. Employees understand that shortcuts or lax attention to pH monitoring, for example, can cost dozens of hours if a batch ends up off-spec.

    HPLC purity charts from our own batch records regularly show over 98% area for the main peak, matching standard references. Water content often runs below 0.5% by Karl Fischer titration—low enough for those running moisture-sensitive reactions downstream. Over the years, we have adjusted workup protocols, including solvent pairing, to minimize colored impurities that some clients flagged early on. At scale, even a minor contamination in a single drum can ruin weeks of client planning.

    Handling, Storage, and Day-to-Day Experience

    On-site, 1H-Indazol-5-ol comes out as a tan to off-white crystalline solid, with batches showing consistent appearance and no residual oils or discoloration. It doesn’t cake easily and remains free-flowing under typical warehouse conditions. Staff store it in airtight HDPE drums in shaded, cool stockrooms to avoid any oxidative issues. Over several years of client shipments, we have not recorded significant product degradation, even in regions with high ambient temperatures, provided the original containers stay unopened except for withdrawals.

    From direct handling in the factory to feedback from synthetic labs, users mention reduced handling issues compared to certain unstable aryl amines or phenols that oxidize or discolor rapidly. We learned the value of careful storage management; losing track of humidity control or letting containers sit near heat sources in transit can undermine months of careful production. Most customers who follow these storage guidelines report using every last gram of our product with no loss in quality.

    Regulatory and Documentation Support: Real Needs from Real Customers

    Testing and validation remain constant themes from our client base. We see requests for comprehensive analytical documentation—NMR, mass spectra, HPLC chromatograms—especially from pharmaceutical research groups. Providing full profiles with every batch supports both reproducibility and compliance. We do not rely solely on certificate templates or paper audits; every release includes electronically archived batch data, original chromatograms, and instrument logs.

    As regulatory requirements continue to tighten, academic labs and commercial buyers come to us early for project-specific paperwork. Our experience shows that delivering a complete package of quality data upfront saves everyone time. Even small discrepancies—an unexplained UV impurity or a minor GC trace—can derail a formulation run if not addressed before shipping. Over the years, we’ve worked alongside several regulatory teams to close gaps before new uses or filings, drawing on years of inspection-ready practices.

    The Real Cost of Shortcuts in Manufacturing

    We learned first-hand that attempts to cut corners to boost short-term yield can cause downstream headaches. Changing a solvent, letting temperature control drift slightly, or using lower-grade feedstock may appear smart at first glance, but the minor savings evaporate after a batch returns off-spec. Taking the time to run tests at each stage, keep equipment spotless, and verify each drum’s seal and label accuracy has become our culture. We know from experience that properly made 1H-Indazol-5-ol eases a researcher’s workload, whereas careless production multiplies everyone’s problems across the supply chain.

    Reliability vs. Experimentation: What the Market Tells Us

    More manufacturers have started producing aryl heterocycles, yet we watch repeat orders and customer feedback more closely than marketing trends. Many pharmaceutical labs experimented with alternate sources, chasing price breaks or faster lead times. Some ultimately returned after finding variance in melting point, inconsistent color, or unexpected by-products. The pressure to keep costs under control will never go away, but our team sees lasting value in shipping reliable, reproducibly pure 1H-Indazol-5-ol. Years of relationship-building showed us that a trusted supply line helps advance our customers’ own development targets more than the smallest savings on raw materials.

    Smaller start-ups in the synthetic biology or specialty chemicals sector sometimes risk unvetted suppliers to save on tight budgets. Our advice always draws from lab and line experience: low price doesn’t mean low risk. We’ve seen clients lose weeks of research to an off-quality shipment, ultimately paying more in lost time and labor than was ever saved on the invoice.

    Supporting Future Applications

    Emerging uses for hydroxylated indazoles continue to shape how we approach manufacturing in our facility. Clients have begun exploring 1H-Indazol-5-ol as a possible intermediate for complex targeted therapies and more sustainable agrochemical ingredients. Some academic collaborators are publishing on its use as a starting point for new ligands and catalysts in organic synthesis. These multiple routes of downstream chemistry challenge us to refine purity, control contaminants, and maintain supply for project timelines that might shift unexpectedly.

    Our laboratory team investigates improved purification strategies—selective crystallization or fine-tuned solvent swaps—to continually cut down on trace side-products. Working closely with downstream research teams, we receive requests for specific impurity profiles or solvent-free material, demonstrating a shift toward more specialized demands in the next generation of synthesis.

    Feedback and Collaboration: Improving Beyond the Specification Sheet

    Over the years, our support and technical teams learned that the formal specification sheet rarely covers every end-user concern. One project leader might ask about residual heavy metals or unknown peaks in NMR; a scale-up chemist might want details on dusting or dust control. We respond directly and document every request, using the information to refine our methods and batch records.

    Responsive production has meant investing in new HPLC and GC equipment, hiring a dedicated analytics crew, and encouraging line workers to flag potential issues for further review. In one notable example, a customer experienced minor residue in a downstream coupling step traced back to a specific recrystallization lot. Fast root-cause analysis and open communication saved both the customer and us a great deal of frustration. Collaboration like this turns one-off feedback into permanent process improvements. As a manufacturer, not a distributor, we invest in refining the product at the source instead of relying on generic external testing.

    Logistics Experience: From Factory to Research Lab

    Shipping specialty chemicals like 1H-Indazol-5-ol throughout local and global markets poses its own challenges. Our logistics team routinely double-checks labels and drum seals, packing with desiccants and outer insulation as standard even on short-haul routes. A delay or a poorly packed drum risks heat damage or accidental moisture absorption, so we track every lot until signed for by the client.

    Over time, we found that the best way to support users is to prioritize fast, clear communication about delays, customs checks, or special requests for shipping paperwork. We never promise unachievable lead times; our reputation depends on every shipment arriving in the right condition. For urgent research schedules, customers appreciate transparency and a record of consistently meeting deadlines. We’ve handled requests for shipping direct to GLP sites or academic chemistry divisions with care by coordinating closely across time zones and customs requirements.

    What Drives Our Manufacturing Standard?

    Working as front-line chemical manufacturers, we see the real impact of meticulous production. The time invested in fine-tuning synthesis parameters, controlling every variable, and responding directly to end-user feedback results in 1H-Indazol-5-ol batches our staff are proud to ship. Our crew understands the molecule’s quirks and consistently delivers material fit for laboratory and small-scale industrial use. Each improvement comes from listening to those who use our chemicals, then investing in factory and QC upgrades that pay off in every repeat shipment.

    Lessons from Years of Manufacturing

    Years handling 1H-Indazol-5-ol have shown that a robust supply chain, transparency about quality, and rapid response to customer needs win long-term business. We focus less on generic marketing and more on clearing up the tricky details that can slow research or production. Cutting-edge applications in drug discovery or materials chemistry build on our ability to provide reliable raw materials. Daily work in synthesis, purification, and packaging exposes us to problems as they arise, so we take proactive steps, like ingredient audits and on-call batch analysts, to keep our quality high.

    Our manufacturing practice means prioritizing long-term trust over shortcuts. The entire crew knows that every drum or package represents weeks or months of R&D activity for a customer, with little room for error or delay. Feedback and repeat orders tell us we’re on the right track, but every new request pushes us to keep raising our standard.

    Looking Forward: Keeping Pace with Tomorrow’s Research Needs

    Research labs in pharmaceutical, agrochemical, and material sciences continue to challenge us with requests for higher purities, new analytical methods, and tailored batch sizes. As more studies shift toward automation, high-throughput screening, and data-driven discovery, the tolerance for inconsistency shrinks. We’ve responded by investing in operator training, robotics for specific weighing and packaging steps, and software for tracking every step in the manufacturing and QA workflow.

    Direct lines of communication between our technical support and the factory floor allow us to address concerns quickly. A change in reference material, a newly published synthetic route, or a regulatory announcement can all trigger a round of production review. We treat each new requirement as a chance to further refine our practices.

    Our experience manufacturing 1H-Indazol-5-ol stands as a record of what real-world collaboration between chemical makers and end-users achieves. The value comes from knowing this material will perform as promised—not just in theory, but on the bench, every time.