|
HS Code |
373037 |
| Chemicalname | Indole-6-Carboxaldehyde |
| Casnumber | 17428-06-1 |
| Molecularformula | C9H7NO |
| Molecularweight | 145.16 |
| Appearance | Off-white to pale yellow solid |
| Meltingpoint | 221-225°C |
| Solubility | Slightly soluble in water; soluble in organic solvents like DMSO and ethanol |
| Synonyms | 6-Formylindole; 6-Indolecarboxaldehyde |
| Purity | Typically ≥98% |
| Storageconditions | Store at 2-8°C, protected from light and moisture |
| Smiles | C1=CC2=C(C=C1C=O)NC=C2 |
| Inchi | InChI=1S/C9H7NO/c11-6-7-2-1-3-8-9(7)4-5-10-8/h1-6,10H |
As an accredited Indole-6-Carboxaldehyde factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Indole-6-Carboxaldehyde, 5 grams, supplied in an amber glass bottle with a tamper-evident screw cap, labeled with hazard information. |
| Shipping | Indole-6-Carboxaldehyde is shipped in tightly sealed containers under ambient conditions and protected from moisture and light. Proper labeling, cushioning, and secondary containment are used to prevent leaks or exposure. The shipment complies with relevant chemical transport regulations to ensure safe handling and delivery. Consult the Safety Data Sheet (SDS) for specific instructions. |
| Storage | Indole-6-Carboxaldehyde should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from direct sunlight. Keep it away from incompatible substances such as oxidizing agents. Store at room temperature or as specified by the manufacturer, avoiding extreme temperatures. Proper labeling and secure shelving are recommended to ensure safety and prevent accidental exposure or contamination. |
Applications of Indole-6-Carboxaldehyde in Industrial ManufacturingIndole-6-Carboxaldehyde serves as a crucial intermediate in select, well-established industrial value chains. Its high purity and structural specificity make it suitable for downstream use in several specialized manufacturing sectors, where process integration, compliance adherence, and known formulation roles are critical to scaled production and regulatory approval. Below, we outline primary application scenarios, focusing on practical details directly relevant to process and compliance engineers, buyers, and technical teams in these domains. 1. Pharmaceutical Intermediate for Novel Indole-Containing Drug SynthesisAs a building block in the synthesis of advanced indole-based pharmaceuticals, this material participates in targeted functionalization steps, including condensation and cyclization reactions central to drug core modification. Manufacturers select it for controlled introduction during the construction of heterocyclic scaffolds, critical for most modern indole-derived actives under stringent cGMP environments. Its addition typically occurs in the mid-stage of synthesis, after initial indole ring functionalization, to yield diverse amine-functionalized or fused ring systems with precise pharmacological properties. Each synthesis campaign requires process-specific adaptation of ratio and reaction controls to safeguard final purity and batch reproducibility. Industry compliance standards
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2. Agrochemical Active Ingredient Synthesis (Plant Growth Regulators)This material features prominently in agrochemical plants as a key intermediate for synthesizing plant hormone analogues, especially certain indole-derived growth regulators. Production lines requiring strict process control integrate it post-indole nucleus construction, applying defined ratios based on stereochemical and functional requirements. Downstream, it undergoes selective condensation and reduction steps unique to the development of plant auxins with targeted growth modulation activity. The workflow meets agrochemical regulatory requirements from raw material sourcing through to active ingredient isolation, with robust documentation for residual impurity control. Industry compliance standards
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3. Organic Electronics: Synthesis of Functional Dyes and OLED IntermediatesIn the advanced materials sector, manufacturers leverage this material for the targeted synthesis of indole-based functional dyes and intermediates within OLED and organic photovoltaic (OPV) production pipelines. Its use directly influences the optoelectronic properties of finished products by introducing formylated groups that serve as anchor points for further functionalization. It is weighed into upstream stages where electronic donor/acceptor frameworks are being constructed, particularly in small-batch production for high-property tuning of emitting and charge-transport materials. Selection of ratio depends on optical density and molecular design targets needed by downstream device integration specifications. Industry compliance standards
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4. Fine Chemical Synthesis for Laboratory and Custom Synthesis HousesResearch-scale manufacturers and specialty synthesis service providers source this material as a controlled reagent for constructing unique indole-based fine chemicals and research tools. It enables targeted functionalization in both one-pot and stepwise synthetic programs, particularly in academic, contract, and scale-up labs pursuing rare indole derivatives. Compliance with laboratory-scale safety protocols and purity grades facilitates its integration into modular, short-run syntheses—particularly in SAR (structure-activity relationship) studies, isotopically labeled analog production, and custom-building block libraries. Industry compliance standards
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Every day in our facility, we see the practical side of chemistry. At the core of our work with indole derivatives, Indole-6-Carboxaldehyde (I6C) stands out as a raw material that we not only produce, but thoroughly understand. Over years of manufacturing this compound, we have learned first-hand how its properties meet the needs of those who drive pharmaceutical research and specialty chemicals forward. By managing every stage in-house, from sourcing catalysts to the final crystallization, we maintain control over product quality and consistency, which is difficult for traders or resellers to match.
Manufacturers like us keep things straightforward. I6C is a finely crystalline powder, usually off-white to light yellow, depending on process purity and batch size. We produce our I6C under tightly regulated conditions, ensuring a minimum purity of 98% as determined by HPLC. Our batches typically offer a melting point range of 140–144°C. Careful control over solvent selection and reaction parameters keeps impurities well below industry thresholds, making our product fit for sensitive end uses where minor contamination cannot be overlooked.
We generally offer I6C in packaging sizes from lab-scale samples to multi-kilogram lots, sealed in inert atmosphere to maintain its stability through transit and storage. Weight variances stay within industry norms, which supports routine scale-ups for our customers in medicinal chemistry or process optimization labs.
The chemical formula—C9H7NO—reflects the single carboxaldehyde group attached at the sixth position of the indole core. The subtlety of this positioning makes a significant difference for organic synthesis, as we have learned through years of feedback from research groups and industrial formulators. High-purity, specifically positioned compounds like this underpin much of modern synthetic design work.
After a decade of direct feedback from the lab and pilot plant, we have seen where I6C solves real chemistry problems. It frequently enters research pipelines for its ability to serve as a starting material for more complex indole derivatives. Pharmaceutical teams value it for converting to bioactive molecules: kinase inhibitors, receptor ligands, anti-inflammatory drug candidates, and agricultural leads often trace back to I6C as a building block.
We also supply it to materials science groups, where it is needed for developing functional organic dyes and optoelectronic materials. Its specific reactivity at the 6-position makes it especially valuable; analogous compounds, such as Indole-3-Carboxaldehyde, do not share the same biological and functional potential due to positional effects on molecular interactions.
Research chemists comment on the importance of straightforward purification. I6C crystallizes efficiently and withstands moderate temperatures, which cuts down on loss during workup and filtration. Some competitors produce batches with variable batch quality or difficult-to-remove tars; by refining our process over time, we have found ways to deliver crystalline product with fewer secondary side reactions, which earns repeat business from demanding customers.
Handling intermediate-sensitive molecules brings unavoidable risk of impurities. Trace metals from catalysts, residual solvents, and minor positional isomers must all stay below specified limits for advanced synthesis. Routine batch analysis, not just spot-checks, formed the backbone of our quality management from the start. Our team uses methods like HPLC, NMR, and mass spectrometry for every production lot, not just for compliance, but to ensure downstream reliability.
Long-standing experience taught us where contamination creeps in. Aging equipment, air leaks in reaction vessels, and inconsistent temperature profiles have all disrupted yields and purity in earlier years. Incremental improvement—not major overhauls—fixed these headaches. Now, frequent internal audits and staying transparent with our technical teams have built a confidence in product quality that our regular clients now expect.
Medicinal chemistry teams do not want surprises. One batch should behave just like the last. Unexplained color shifts or minor melting point variations can endanger timelines and reproducibility. We recognize that a week lost to re-purification or failed synthesis can derail an entire early-stage drug project. Manufacturing at scale only adds further pressure, since kilogram-scale reactions cannot afford the cost or time of failed intermediates.
By tracking our process history and allotting time for additional purification if needed, we support not only speed but reliability. Several pharmaceutical clients have remarked that our I6C avoids batch-to-batch drift, allowing for direct transfer of research protocols from discovery to pilot production. The underlying reason is our hands-on control of critical process variables, not merely adherence to written procedures.
Pure indole derivatives cost more to produce than simpler, lower-purity materials. Some buyers chase discounts by sourcing from brokers who cannot substantiate their supply chain. Our team often gets calls to resolve production issues caused by off-specification batches sourced from less established channels. The cost savings disappear when an experimental series fails or pharmaceutical pre-clinical validation turns up contaminants.
Operating as a chemical maker brings its own set of constraints—we must contend with rising raw materials prices, stricter environmental rules, and client pressures for faster turnaround. By keeping open dialogue with R&D teams and maintaining our own small network of trusted suppliers, we ensure that quality comes before cost-cutting. Over the long run, clients see the benefit in reduced troubleshooting and higher project completion rates.
Most research groups seeking I6C have studied its reactivity profiles closely. Small structural differences at the molecular level often have dramatic effects on both reactivity and end use. We routinely get questions about whether indole-2-carboxaldehyde or indole-3-carboxaldehyde could act as substitutes. In practical experience, they do not.
Placement of the -CHO group at the sixth position on the indole ring bestows different electronic and steric properties, which in turn affect reactivity toward condensation reactions, cross-couplings, or further derivatization. Once, a client attempting to shortcut a medicinal chemistry synthesis swapped I6C for indole-3-carboxaldehyde; significant byproduct formation and loss of target molecule followed. Our chemists parsed the mechanistic causes, and the client had to revert to the correct material. This is not a trivial academic distinction—real project timelines can shift by weeks over such mistakes.
Part of our role goes beyond supplying a jar of powder. We find clients return for technical guidance, especially as I6C moves into more complex syntheses. Stable supply enables innovative medicinal chemistry, but even experienced teams appreciate manufacturer insight into downstream transformations. Knowing how I6C copes with different bases, oxidants, or protecting groups matters once a project scales up.
On several occasions, clients have queried side-reactions unique to certain synthetic conditions. Because we test our own material in typical reactions, we draw on a bank of process knowledge gathered not from textbooks but from hands-on work and customer feedback loops. When solvents dry differently or scale-up exotherms threaten safety, we guide with experience, not theoretical conjecture.
A senior scientist in our technical group once solved a persistent batch degradation problem for a customer scaling from 5-gram bench synthesis to 100 grams for lead optimization. Rather than recommending a generic storage solution, we took the time to assess the influence of slight acid traces in the container polymer—something only a manufacturer with first-hand process history would know affected long-term stability. Changes to our supply-chain packaging cut degradation rates and platformed the customer’s work through preclinical milestones.
Producing I6C brings responsibility. We regularly field questions about how to mitigate handling risks, even though the material’s hazard profile is moderate compared to more reactive intermediates. By maintaining tight solvent control, reducing the need for unnecessary reagents, and ensuring proper ventilation in packing rooms, we keep worker exposure below accepted thresholds.
Chemical makers understand that safety practices cannot come after production. Routine staff training, real-time monitoring of process conditions, and accessible waste segregation all play a part. Over time, vigilance becomes second nature. Several years ago, we updated our solvent recycling systems, which shrank the overall waste burden and trimmed overhead, proving sustainable practices pay off. Direct manufacturer experience makes clear which operational upgrades work and which are wishful thinking.
Material packaging and transport falls under our regular risk review, keeping compliance well within reach and supporting end users in meeting their own health and environmental benchmarks.
Knowledge of starting materials and process conditions for I6C flows from direct sourcing and in-house manufacture. Clients sometimes underestimate the risks tied to third-party supply or resold batches. Several years back, a sudden uptick in supply shortages forced many researchers to reconsider their sourcing priorities. Because we manage the complete workflow—raw material to final QC—clients shield their work from pitfalls like counterfeit supply, relabeled goods, or adulterated intermediates.
Manufacturers cannot afford to compromise traceability. Tracking every input and documenting process changes creates a transparent record for regulatory bodies and end users. Each time a market panic creates a shortage, those who keep stable relationships with direct chemical makers come out ahead—experiments stay on schedule, product quality does not dip, and reputational trust remains intact.
Our investments in automation—like real-time batch monitoring and scheduled maintenance—paid off during recent supply crises. By learning where bottlenecks might arise and tracking inventory daily, we never over-extend production and leave customers guessing. Years of direct manufacturing experience show that stability breeds success in high-value chemical research.
Every production run of I6C offers a new lesson. Raw material inconsistency, subtle process drift, or packaging defects lend insight into what works and what needs refinement. Our technical leads share these lessons across teams, shortening the troubleshooting cycles for each successive batch. Real-world conditions, not assumptions, shape process change.
Automation has greatly improved our ability to ensure homogenous mixing, track endpoint conversions, and monitor critical impurity levels. Yet, experienced operators remain essential—seasoned eyes catch anomalies that sensors miss. Combining technician insight with robust technology amplifies gains in both output and reliability. We continue to refine both, day in and day out.
Review of customer feedback rounds out our learning process. Projects where integrity of I6C made the difference between publication and project halt inform our improvements. Where we can simplify workflow or swap problematic reagents, we do so. This manufacturer attitude sets a standard traders cannot follow.
Clients often seek more than just product. They rely on advice rooted in hands-on manufacturing, from shipping options for delicate materials to validation of critical analytical data. Our technical service staff collaborate directly with researchers, not just sales teams, offering practical solutions to storage, waste handling, or analytical troubleshooting. Processes once susceptible to delays now proceed smoothly, because communication springs from real daily experience.
Support means being available to answer late-night questions about batch performance, troubleshooting analytical spikes, or adapting to evolving project scopes. Being a direct manufacturer makes this possible—no layers of intermediaries, no lost context.
Some sellers claim to offer broad “customization,” but only manufacturers like us shoulder the detail work behind scale-up, impurity control, or batch consistency. Years in the lab and plant brought us insight into how small process changes ripple out to customers.
Where research projects ride on reliable indole derivatives, guidance must come from those who have walked the manufacturing floor, faced the process mishaps, and resolved every unexpected batch anomaly. Over time, this builds trust critical to collaboration. Repeat orders, long-term partnerships, and successful project outcomes flow from this experience.
We take pride in providing Indole-6-Carboxaldehyde not as a faceless bulk commodity, but as a material backed by years of technical knowledge and an unbroken commitment to chemical and project integrity.