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HS Code |
520333 |
| Chemical Name | Ethyl (R)-2-(4-Hydroxyphenoxy)propionate |
| Molecular Formula | C11H14O4 |
| Molecular Weight | 210.23 g/mol |
| Cas Number | 868676-46-0 |
| Appearance | White to off-white solid |
| Purity | Typically ≥98% |
| Storage Temperature | 2-8°C (refrigerated) |
| Solubility | Soluble in organic solvents such as DMSO and methanol |
| Optical Activity | Chiral (R-enantiomer) |
| Synonyms | Ethyl (R)-2-(4-hydroxyphenoxy)propanoate |
| Smiles | CCOC(=O)C(C)Oc1ccc(O)cc1 |
| Application | Pharmaceutical intermediate |
As an accredited Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The chemical is supplied in a 25g amber glass bottle with a secure screw cap, labeled clearly with compound name and hazards. |
| Container Loading (20′ FCL) | **Container Loading (20′ FCL)**: Loaded in 20′ FCL with secure drum packaging, maximizing space for safe, efficient bulk transport of Ethyl (R)-2-(4-Hydroxyphenoxy)propionate. |
| Shipping | **Shipping Description:** Ethyl (R)-2-(4-Hydroxyphenoxy)propionate is shipped in tightly sealed containers, protected from moisture and direct sunlight. Transport complies with chemical safety standards, and appropriate labeling is used. Standard delivery is via ground or air, depending on regulations, with documentation provided. No special hazard classification is generally required for this compound. |
| Storage | **Ethyl (R)-2-(4-Hydroxyphenoxy)propionate** should be stored in a tightly sealed container, protected from light and moisture. Store at room temperature (20–25°C) in a cool, dry, well-ventilated area, away from heat sources, incompatible substances, and ignition sources. Ensure proper labeling and access only to trained personnel. Follow local regulations and the product’s safety data sheet (SDS) for safe handling and storage. |
| Shelf Life | Shelf life: **2 years** when stored tightly sealed in a cool, dry place, protected from light and moisture, under recommended conditions. |
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Purity 99%: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with a purity of 99% is used in chiral pharmaceutical synthesis, where high optical purity ensures enantiomeric selectivity and efficacy. Melting Point 85°C: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with a melting point of 85°C is used in drug formulation processes, where thermal stability enables consistent solid-state manufacturing. Molecular Weight 224.24 g/mol: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with a molecular weight of 224.24 g/mol is used in advanced organic synthesis, where precise dosing supports reproducibility in reaction yields. Particle Size < 20 μm: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with particle size less than 20 μm is used in tablet manufacturing, where fine dispersion guarantees uniform drug content. Viscosity Grade 3 mPa·s: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with a viscosity grade of 3 mPa·s is used in liquid excipient blends, where low viscosity provides enhanced processability and mixing efficiency. Stability at 40°C: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with stability at 40°C is used in long-term storage conditions, where preserved chemical integrity maintains product shelf life. Water Solubility 50 mg/mL: Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate with water solubility of 50 mg/mL is used in injectable drug delivery, where high solubility facilitates formulation of aqueous solutions. |
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Our story with Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate began inside our production suite, where speed, consistency, and purity remain under constant watch. This product, which carries the Model: ER-HPP-98, grew out of direct dialogue with pharmaceutical R&D teams frustrated by varied optical purity and the challenges that stubborn contaminants bring. In our hands, this molecule presents not just a formula but a reliable foundation for trusted synthesis—particularly for those preparing advanced active intermediates for agrochemical and medicinal products.
Process knowledge sharpens with each batch run. We don’t rely on luck when it comes to the (R)-enantiomeric excess. Our standard batches maintain optical purity above 98%, and GC/HPLC profiles line up batch after batch. From its light, crystalline powder to the stability recognized across shelf trials, every kilo reflects not only what the literature demands but what actual users require at the bench. Moisture levels stay well below 0.5%, and our impurity checks deliver results that make it easy for downstream processors, whether they aim for high-yield chiral synthesis or formulation development.
In the fine chemicals world, even tiny drifts in quality mean headaches down the line. There’s no substitute for seeing granular data and process records—not just quality but traceability. That’s why our operation lines up every parameter with real-time feedback loops and maintains production logs available for technical audits. This approach not only meets regulatory requirements but actually sustains relationships between our technical team and process engineers on the customer side. We’ve tackled feedback from customers facing yield dips and batch rejection, leading us to refine filtration, isolation, and even packaging steps. Feedback doesn’t slide into a database; it gets used to build a better run.
The chiral center in this molecule changes everything for those synthesizing modern actives. Too many procurement teams have seen low-purity or racemic mixtures hurt research projects, leading to wasted effort. We know the difference because we make both isomers—they behave differently under identical reaction conditions, especially in coupling and refining steps. The (R)-enantiomer, consistently isolated to over 98% purity using our proprietary crystallization, tends to form intermediates that show stronger performance in targeted biological and chemical assays.
Our product offers transparency in origin, not a global shuffle through traders and packers. Every drum, down to the batch number, lines up with production schedules, raw material origins, and QC logs. Problems can be solved directly—not traced upstream through layers of traders, which often leads to delays and incomplete answers. If an issue arises with crystallization, it’s not a matter for paperwork, but one for the plant technician and chemist who made it, standing shoulder-to-shoulder with our QA department.
Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate rarely leaves our site as an abstract commodity. Our technical support receives requests from both the pharmaceutical and agrochemical industries seeking to build complex esters, intermediates, and final compounds that rely on a well-behaved chiral fragment. End users have put our product directly into pilot and production synthesis of key anti-inflammatory, antifungal, and herbicidal candidates. Small changes—even in water content—lead to side reactions or inconsistent recovery. After switching to our grade, labs have reported better chiral stability and fewer purification cycles, reducing solvent costs and improving their time-to-validation.
Users sometimes run direct transesterification or rely on coupling reactions that test the entire impurity profile of the starting ester. If a competitor’s batch contains off-ratio stereochemistry or unpredictable hydrolysis, work can stall or be lost. The model we produce allows users to proceed confidently, knowing their final compounds meet both research and industrial QC targets without the frustration of persistent racemization or trace contaminants. We’ve seen batches shipped directly into the hands of process scientists, who confirm the same melting point, IR signatures, and chiral rotation every time.
Not every plant follows the same protocol. Some buyers want kilos for pilot lines; others need routine container-loads for scale-up. In both cases, it’s easy to spot when a manufacturer’s processes become sloppy. We’ve walked into customer plants and seen what happens with uncontrolled microbials or batch-to-batch variation—sudden shifts in TLC or brown specks ruining final purification. That’s not just theoretical; these are headaches we aim to prevent before a single drum leaves our dock.
Our specifications reflect the lessons we learn daily—tight particle size, strict moisture limits, and a full impurity profile that covers the most relevant side products seen in real production, not just what’s easy to count or fits in a spec sheet. The whole production, from order to delivery, leaves a fingerprint. We keep those fingerprints accurate, visible, and tied to a real team who stands behind them.
Dealing with supply chains that stretch thin and sometimes break, customers want more than just a high-spec product in a drum. That’s why transparency wins in the long run. Buyers want to know why our batch ran on Tuesday landed with a slightly lighter color, or how we control for atmospheric moisture in the third shift. We answer those questions with actual process data, not copy-paste statements. Site visits have led to improvements on both ends—when partner chemists spot a filtration inefficiency, or when our R&D engineers propose a tweak to downstream handling.
Every manufacturer can claim purity, but the real difference shows up downstream. Our product offers a track record of successful audit and technical review. Some customers demand tailored documentation, full origin tracing, or want discussions with our production chemists. We see every technical dialogue as a chance to improve not just a product, but the relationship that means fewer surprises. This approach, built on actual handling and iterative troubleshooting, means those using our material spend less time firefighting and more time pushing projects forward.
Not every ethyl (R)-2-(4-Hydroxyphenoxy)propionate available offers the same performance in the field. Anyone who has sourced from bulk consolidators or repackagers knows the challenge—unpredictable particle size, water ingress, off-ratio enantiomers, or unknown stabilization agents that throw off downstream synthesis. By producing this compound in a controlled plant dedicated to chiral fragments, batched only after full in-house testing, we prevent cross-contamination and unintentional mixing. Product traceability matches not only to ingredient supply, but to the technicians and shift that ran the line.
Many users have found cutting corners on source leads to cost spikes when batches underperform or need resourcing. We partner directly with chemists and procurement leads on everything from best storage practices to probe-specific concerns over batch stability. Packaging density, container liner compatibility, and ambient exposure during transit—these are issues we tackle on the producer’s end, not left for a distant customer to puzzle out after orders arrive.
We handle manufacturing as an ongoing negotiation between the plant floor, end-users, and regulatory compliance. Repeated analysis shows that even established specs don’t always catch the rarer, unexpected process events, and so every instance of customer feedback, inquiry, or complaint loops directly back to those in charge of the core processes. Some years ago, a lab partner called out a persistent trace impurity misidentified by third-party GC. That led to a revision in our in-process controls and additional rounds of spectroscopic checks, giving rise to a purer product—and closer partnership.
Handling multi-ton production introduces new challenges. Heating, filtration, and final drying scale differently compared to pilot or kilo-lab work. We’ve used these learnings to fine-tune agitation rates and recrystallization solvents. Sometimes that means direct investment in new filtration mesh or improved temperature control—these aren’t expenses, but insurance policies. The result is a consistency appreciated by those on rapid go-live synthesis timelines.
Production sometimes looks like a battle of wits against humidity, batch swing, or the occasional raw material hiccup. Our operators, many with a decade or more of hands-on experience, spot subtle clues in the way a batch smells, forms, or filters. That training and intuition save time when something veers off, and it’s the main reason we insist on retaining experienced staff rather than cycling through temps. Repeating those skills means better product and faster problem resolution—not abstract “innovation,” but real reduction in scrap, rework, and downtime.
On-plant engineers have built-in routines to handle waste minimization and energy efficiency. Setpoints weren’t guessed in a lab—they reflect parameters observed over hundreds of batches. Environmental controls, careful venting, and live safety monitoring mean we cut risks for both our team and customers. This has fed back into improved yields and more reliable deliveries, even during supply chain stress or raw material shortages.
Our biggest lessons come from seeing where our product lands. Sometimes it’s in early discovery for a critical patent race; other times it supports a validated pathway to a new generic. The difference isn’t just who ends up with the drum, but in ensuring their synthesis flows smoothly. Enhanced yield, reproducible chiral purity, and stable handling translate, for our partners, to faster market launches and lower risk of failed starts.
Being close to both R&D and production stages means each complaint, each surprise analytical spike, triggers review—not bureaucracy. Anomalies lead to changes on the line, updates to documentation, and, where necessary, in-person troubleshooting. This way, we don’t simply supply a substance; we directly contribute to the timeline and effectiveness of our customers’ business plans.
In regions with strict regulatory audits—whether for new agrochemical registration or pharmaceutical validation—we’ve proven the importance of battle-tested documentation and transparent supply. Manufacturers who treat regulatory questions as afterthoughts endanger not just product launches but also their own reputational standing.
Familiarity with auditory demands of the FDA, EMA, and major regulatory bodies equips us to anticipate and solve common bottlenecks before they reach the end user. Certificates and comprehensive analytical packages—NMR, MS, IR, and specific chiral rotation—follow every shipment, supported by nearly real-time query-response for clarification or site inspection. We host auditors with full access, not just staged sample rooms or document rehearsals.
A good product survives customer scrutiny; a great product solves headaches before they start. Production planning, flexibility in batch size, and contingency plans for weather or raw material supply all mean a smoother experience from order to delivery. Many of our long-term partners came to us after losing weeks on inconsistent material sourced through chains of brokers or “brandless bulk” without an answer for where things went wrong.
From our QA point of view, nearly every non-conformance or technical incident has made us better. The team tracks real returns and complaints, then builds those lessons into process changes—a permanent, living improvement cycle. Plant walk-throughs and open books, rather than glossy sales material, help our customers see what “manufacturer-sourced” material truly means.
This molecule stands as more than a specialty chemical; it’s become a trusted link in multiple high-stakes supply chains. Customers considering this product need to weigh more than a price point—they should ask which producer controls process cradle-to-shipping, has a technical team capable of problem-solving, and can deliver both routine and critical documentation under pressure. A reliable partner means keeping R&D moving forward with fewer stops.
We believe the best path forward combines deep process control, transparent information exchange, and a hands-on support culture—not as buzzwords, but as the daily routine that keeps projects launched and lines running. Ethyl (R)-2-(4-Hydroxyphenoxy)Propionate on its own means little without this infrastructure. We welcome technical questions, project collaboration, and site audits, because we make this product with the knowledge that genuine quality—and the trust it earns—never arises from chance.