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3-(3-Hydroxyphenyl)-Dl-Alanine

    • Product Name 3-(3-Hydroxyphenyl)-Dl-Alanine
    • Alias m-Tyrosine
    • Einecs 247-436-3
    • 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

    180556

    Chemical Name 3-(3-Hydroxyphenyl)-Dl-Alanine
    Synonyms m-Tyrosine
    Molecular Formula C9H11NO3
    Molecular Weight 181.19 g/mol
    Cas Number 6268-75-9
    Appearance White to off-white powder
    Solubility Soluble in water
    Melting Point >220°C (decomposes)
    Purity Typically >98%
    Optical Activity Racemic mixture (DL-form)
    Storage Temperature 2-8°C
    Pubchem Cid 120518

    As an accredited 3-(3-Hydroxyphenyl)-Dl-Alanine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 25g 3-(3-Hydroxyphenyl)-DL-Alanine comes in a sealed amber glass bottle with clear labeling, safety information, and hazard pictograms.
    Shipping 3-(3-Hydroxyphenyl)-DL-Alanine is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. It is typically transported as a solid at ambient temperature, with proper labeling for laboratory chemicals. Shipping complies with local and international regulations to ensure safe handling and delivery of this compound.
    Storage **3-(3-Hydroxyphenyl)-DL-alanine** should be stored in a tightly sealed container, protected from light and moisture. Store at 2-8°C (refrigerated) to maintain stability. Avoid exposure to strong oxidizing agents and prevent prolonged air exposure. Handle in a well-ventilated area using appropriate personal protective equipment to avoid inhalation, ingestion, or skin contact.
    Application of 3-(3-Hydroxyphenyl)-Dl-Alanine

    Applications of 3-(3-Hydroxyphenyl)-Dl-Alanine in Industrial Manufacturing

    As a specialized manufacturer of 3-(3-Hydroxyphenyl)-Dl-Alanine, we supply this chiral intermediate directly to process innovators in advanced chemical and life science industries. The following application scenarios highlight genuine downstream integrations, demonstrating distinctive industrial uses with substantiated regulatory demands and processing parameters.

    1. Pharmaceutical Intermediates in Non-Proteinogenic Amino Acid Synthesis

    In pharmaceutical active ingredient manufacture, 3-(3-Hydroxyphenyl)-Dl-Alanine functions as a critical chiral building block for non-proteinogenic amino acid derivatives. Multistep synthesis routes employ this intermediate during enantioselective hydroxylation and amination stages under cGMP environments. Formulators directly reference relevant compendial entries when establishing batch control, especially for APIs targeting neurological and oncology treatment segments.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP <823> standards for radiopharmaceuticals
    • EU GMP Part II for Bulk Intermediates
    • US FDA Drug Master File (DMF) notification

    Typical usage ratio

    • Ranges from 0.5% to 7% of total API batch composition, fine-tuned based on target molecule structure and purification yield; precise ratio determined after route scouting and pilot synthesis validation.

    Downstream process integration

    • Integrated as the key intermediate during early-stage condensation or amidation step, often after protecting group introduction for downstream functionalization; added in agitated glass-lined reactors under controlled inert atmosphere.

    Final product types

    • Custom small-molecule APIs (e.g., research compounds for CNS disorders)
    • Targeted radiolabeled drugs
    • Peptidomimetic compounds with non-proteinogenic residues
    • Advanced intermediates for further chiral synthesis

    2. Building Block for PET Radiotracer Synthesis

    Medical isotope production facilities use this compound to synthesize novel positron emission tomography (PET) imaging tracers. It serves as the precursor for hydroxylated aromatic amino acids, essential for tumor and brain imaging agents. Radiochemistry teams incorporate the material directly as the substrate for site-specific labeling with F-18 or C-11, following tightly controlled parameters due to the ultra-short half-life of radiolabels.

    Industry compliance standards

    • USP <821>, <825> for radiopharmaceutical chemicals
    • Ph. Eur. 5.19 Radiopharmaceutical Preparations
    • cGMP for Radiopharmaceutical Manufacture
    • ISO 9001:2015 Quality Management Systems (applicable to critical reagent suppliers)

    Typical usage ratio

    • 0.2 to 2.0 mmol per labeling reaction, determined by target tracer yield and specific activity required; actual reagent input calculated by radiochemical demand and decay kinetics per synthesis cycle.

    Downstream process integration

    • Employed as the immediate precursor during the radiolabeling step; introduced directly to the isotope solution alongside catalyst under automated synthesizer control; followed by high-performance purification for formulated doses.

    Final product types

    • F-18 labeled amino acid PET tracers (e.g., [18F]FDOPA analogs)
    • C-11 labeled aromatic tracers
    • Diagnostic kits for in-hospital PET scanning
    • Research-use-only radiotracers for metabolic pathway studies

    3. Research Reagent Supply for Neurotransmitter Pathway Studies

    Academic and contract research organizations rely on this molecule as a reference compound and labeled substrate in neurochemical pathway elucidation projects. Laboratories use it to mimic, block, or trace metabolic conversion events involving L-DOPA analogs for in vitro and in vivo models. Stringent chemical purity and traceability standards dictate the supply chain, especially for published studies requiring GLP documentation.

    Industry compliance standards

    • OECD Principles of Good Laboratory Practice (GLP)
    • 21 CFR Part 58 (US FDA GLP for Nonclinical Labs)
    • CAS chemical archive reference requirements
    • ISO/IEC 17025 accreditation for analytical verification

    Typical usage ratio

    • 10–100 µM for in vitro assays; 1–50 mg/kg for animal model administration; dosage adjusted according to experimental design and diffusion modeling.

    Downstream process integration

    • Weigh-in and dissolving in aqueous buffer or saline for cell-based or animal studies; filtration and sterile preparation conducted according to bioanalytical workflow; use as either stand-alone probe or combined substrate for metabolic conversion.

    Final product types

    • Preformulated research-grade chemical assay kits
    • Reference standards for HPLC quantification
    • Custom labeled amino acids for tracing
    • Neurochemical pathway mapping reagents

    4. Chiral Auxiliary in Peptide and Peptidomimetic Synthesis

    Specialty peptide contract development and manufacturing organizations (CDMOs) integrate this material as a chiral auxiliary for directed synthesis of modified peptide chains. It introduces a site-specific hydroxylated aromatic residue, enhancing the bioactivity or stability profile of designer peptides. Peptide chemists implement advanced protection/deprotection strategies with in-process chiral purity analysis, conforming to contract documentation and customer release specifications.

    Industry compliance standards

    • ICH Q11 Development and Manufacture of Drug Substances
    • Synthetic Peptide cGMP Guidelines (US FDA/EU EMA)
    • ISO 13485:2016 (for diagnostic peptide manufacturing)
    • EP monograph for non-coded amino acids (where applicable)

    Typical usage ratio

    • Introduced at 1–15 mol% relative to total peptide synthesis scale; proportion selected based on target peptide sequence, receptor compatibility, and process yield optimization during scale-up.

    Downstream process integration

    • Incorporated during solid-phase peptide synthesis (SPPS) via coupling to the growing peptide chain on resin; engaged in side-chain modifications prior to final deprotection/cleavage and preparative HPLC purification.

    Final product types

    • Synthetic peptides for therapeutic R&D
    • Bioactive peptidomimetics for drug discovery
    • Custom-modified ligands for structure-activity studies
    • Diagnostics peptide standards
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    Certification & Compliance
    More Introduction

    Understanding 3-(3-Hydroxyphenyl)-Dl-Alanine: Direct from the Manufacturer’s Perspective

    Introduction

    There’s a particular satisfaction in working directly with a compound as foundational as 3-(3-Hydroxyphenyl)-Dl-Alanine, commonly known in technical circles as m-Tyrosine or m-Hydroxy-Dl-phenylalanine. For years, our team has focused on finely tuning the process behind its large-scale production, drawing on experience from the synthesis bench all the way through to purification. This amino acid derivative stands apart from the crowd of related biochemical building blocks, not just for its distinctive molecular setup, but for the attention it receives during every shift in our reactors.

    Model and Specifications: What Sets Our Material Apart

    On the production line, our 3-(3-Hydroxyphenyl)-Dl-Alanine goes under the model designation MP001, with the chemical structure C9H11NO3 and a molecular weight of 181.19. We consistently target a purity level above 98%, confirmed through HPLC and NMR. This vitamin-like powder arrives in tight, white crystals, which form without excess moisture or residue when processed using controlled temperature and inert atmosphere controls. We always keep residual solvents beneath accepted quantification thresholds, and batch-to-batch reproducibility features as a key focus, right down to maintaining optical rotation close to zero due to the racemic blend. Every parameter runs under continuous scrutiny, from pH in solution—carefully measured at each homogeneity check—to particle size we control by overseeing the milling step ourselves.

    Years working with 3-(3-Hydroxyphenyl)-Dl-Alanine has made one truth clear: the margin for error is narrow, and exacting protocols are not just rhetoric; they mark the difference between consistent, reliable output and rejected lots. Cooling rates influence crystalline habit. Stirring speeds change the distribution of particle sizes. Overlook the finer points, and you may spoil an entire vessel’s contents. Our senior operators have accumulated a vast mental checklist. That hands-on know-how, built up across countless shifts, results in a material that wins praise from researchers and manufacturing partners alike. The lab isn’t a distant land to our manufacturing team—it’s where we take product samples daily.

    Application Insights: Where and How 3-(3-Hydroxyphenyl)-Dl-Alanine Comes Into Play

    3-(3-Hydroxyphenyl)-Dl-Alanine draws interest from a spectrum of sectors, but no line of work appreciates its value quite like those advancing neuroscience, metabolic research, and peptide synthesis. The molecule’s close relation to tyrosine lets it function in enzyme studies where substrate specificity matters. Biochemists pursue it as a precursor in dopamine pathway research, with in vitro experiments depending on its precise configuration. For those working on custom peptide development, the unique arrangement of the hydroxy group opens paths to novel analogs and probing structure–activity relationships.

    Our customers in the analytical sciences often need highly pure standards for chiral separation and reference material development. We remember a conversation with one synthesis group, battling contaminants from cheaper, off-shore imports. Their chromatography curves showed tailing peaks until they switched to our product—with us, they saw sharp, symmetrical results, removing ambiguity from their data. The broader world of fine chemical and pharmaceutical manufacturing also leans on strict reproducibility, expecting suppliers who don’t cut corners. We fulfill these demands with every drum we fill and every pack we seal.

    What Makes Our DL-Isomer Different from Regular L- or D-Analogs?

    3-(3-Hydroxyphenyl)-Dl-Alanine comes as a racemate, meaning it holds both D- and L-forms in equal measure. Unlike products offering just a single stereoisomer, racemic formulations meet a broader array of experimental needs. Certain enzyme panels require both isomers for control studies, while metabolic studies test varying responses. The DL form also eases comparative work—one can evaluate stereospecific transport or enzymatic transformations without purchasing two separate lots.

    Chemists sometimes reach for the single-isomer form, but our broad-spectrum DL material simplifies procurement, storage, and planning—one drum supports more projects, less waste. That choice proves economical for labs juggling multiple protocols or switching study designs with little notice. We only consider separating isomers upon explicit client requests, as the procedure demands precise chromatographic or enzymatic steps, raising cost and turnaround time. For nearly all practical research, the DL blend satisfies the need for versatility without sacrificing purity or performance.

    Pragmatic Reflections: Why Consistency Trumps Claims

    From our vantage point, what makes 3-(3-Hydroxyphenyl)-Dl-Alanine worthwhile is not fancy packaging or creative marketing. Instead, it’s the quiet, steadfast commitment to process discipline, open reporting, and everyday dialogue with buyers and end-users. Consistency is earned over years, not through a single batch. We’ve seen academic teams burned by unreliable lots, with project timelines slipping when materials didn’t meet previously advertised purity or performance. This risk is most acute when clients chase rock-bottom prices from non-specialists, often resulting in missed milestones or the need to redo experiments.

    We rely on tight process control, using closed-system handling, and keep up with international certification trends. Risk management forms part of every shift handover at the plant. Samples get saved from every batch and stored under lock, so if questions arise even months down the line, re-testing is quick and transparent. Our investment in quality control audits may drive up our overhead, but our repeat clients know what that extra scrutiny delivers: peace of mind amid regulatory challenges and shifting commercial needs.

    Safety Considerations Informed by Years in the Field

    Manufacturing any amino acid derivative warrants a safety-first mindset. The main hazards with 3-(3-Hydroxyphenyl)-Dl-Alanine don’t usually stem from acute toxicity, but from inhalation of fine particulates and potential for allergic reactions. Dust control engineering—using hoods and extraction at the point of production—prevents airborne dispersion. All operators receive training on material-specific handling. Masks, gloves, and anti-static gear make their way onto every operator’s safety checklist before even opening a drum. We take pride in never seeing a significant incident linked to improper product management, thanks in part to a culture of visible accountability on the production floor.

    Customers often ask about shelf life and storage. We’ve repeatedly tested batches stored at ambient and controlled cold conditions. Desiccation and sealing away from sunlight maintain the white, free-flowing appearance for up to three years. We advise against storage under humidity or elevated temperature, since those can prompt browning or subvisible degradation—risking assay failures or complicating analytical results downstream. Our standard packaging relies on high-density polyethylene drums with double liners, a choice that stems from hard-earned experience with cracked containers and moisture ingress in the past.

    Challenges and Ongoing Process Improvements

    Sourcing high-quality starting materials is always at the front of our attention. Aromatic precursors must meet strict impurity profiles, as even trace byproducts may influence crystallization or color. Early on, we faced issues with raw material lots that looked fine to the naked eye but included contaminants only detectable through advanced LC-MS scans—causing us to overhaul our supplier qualification standards and incoming material quarantine. We built partnerships with feedstock producers based on site visits and real world batch testing. Open communication upstream reduces downstream failures.

    Maintaining cost-effectiveness while upholding these stricter protocols presents a continuing challenge. Automation in weighing, dispensing, and filtration have trimmed human error, but we still station an experienced operator at each step where judgement calls matter. The response to minor off-spec findings—like a subtle color shift—triggers a full process review, not an easy pass. We track these changes through internal audits, adjusting cleaning and rinsing regimes or equipment schedules when pattern recognition suggests a shift.

    Scaling from gram to kilogram lots without sacrificing purity requires adaptation. High-purity chromatography at lab scale doesn't always translate one-to-one onto kilo-scale columns. Years of pilot plant optimization helped us figure out the right flow rates and stationary phase choices, all while avoiding cross-contamination between batches. Our lead plant chemist still travels between facilities to transfer process updates in-person, ensuring our methods stay tightly linked, regardless of where production is running that month.

    Market Realities and How We Address Them

    Buying direct from a chemical manufacturer offers fewer surprises compared to dealing with multiple intermediaries. We have seen buyers burned by delayed documentation or unexpected foreign exchange adjustments when trading through shell companies or resellers. Our approach strips back such uncertainty—pricing direct from the plant, clear lead times based on real capacity, and full transparency on traceability. For years, we’ve resisted the allure of scaling up purely by transitioning to tolling or outsourced production. That decision lets us safeguard know-how and quality in-house, fielding technical questions directly and sharing data openly with each client.

    From our vantage point, many in the research sector feel squeezed by rising input costs and shifting global regulations, especially related to controlled substances and customs scrutiny. By keeping our own processes compliant with international standards, we help customers sidestep tie-ups at borders or sudden changes in material classification. We regularly run scenario-based quality reviews to prepare for abrupt market shifts—such as changing tariffs or raw material shortages—so clients remain insulated from surprises that can disrupt deadlines or derail budgets.

    Supporting the Work of Scientists and Manufacturers Alike

    We recognize that researchers and product development teams work in dynamic environments, often reordering with new specification tweaks or last-minute documentation changes. Our technical and QA teams stay up late and start early to translate these needs into concrete production moves or rapid paperwork turnarounds. It’s not uncommon for a client’s inquiries to spark a deeper conversation—sometimes even leading to a process tweak or a custom batch tailored for a novel application. Many of our most valuable improvements were suggested directly by users who noticed an anomaly or suggested a shortcut.

    Batch documentation isn’t just a formality. We collect not just the usual COA and MSDS, but also retain process logs and retain samples, so reference points are always available for future batches, audits, or troubleshooting. Feedback loops between user and manufacturer inform both corrective action and continuous improvement—from tweaking rinse cycles on the reactor, to identifying a sublot where a mixing blade left micro-abrasions affecting final powder color. Decades of iterative improvement result in a product that’s more than just the sum of its analytical data—it carries the behind-the-scenes rigor and pride of the team who makes it.

    Comparing to Other Amino Acid Derivatives—Where Differences Matter

    Unlike most routine amino acids, 3-(3-Hydroxyphenyl)-Dl-Alanine stands out for its unique substitution pattern on the aromatic ring. The placement of the hydroxy group at the meta position (rather than the more common para seen in tyrosine) opens doors for research into alternative enzymatic pathways and receptors. This subtle yet significant difference drives its value as a tool in advanced hypothesis testing or mechanistic exploration. Traditional tyrosine derivatives may suffice for baseline experiments, but explorations at the leading edge—such as probing less-understood biosynthetic pathways or mapping unusual metabolic fates—benefit from the specific characteristics of this compound.

    We often get requests for analogs, each carrying unique ring substitutions or chiralities. Over-simplified justifications like “close enough” rarely hold up at the bench where small changes can mean vastly different results. Medicinal chemistry groups, in particular, illustrate this routinely. The need for absolute clarity on what is being introduced into an assay means our differentiation on the sourcing, handling, and verification of each lot of 3-(3-Hydroxyphenyl)-Dl-Alanine is taken seriously. Detailed spectral information accompanies every shipment for this reason, and our approach remains one of open technical support before, during, and after delivery.

    Conversations with End Users Drive Real-World Insight

    Often, the most constructive feedback we receive about 3-(3-Hydroxyphenyl)-Dl-Alanine isn’t about purity or cost; it’s about transparency, predictability, and a willingness to engage in honest troubleshooting. By maintaining direct lines to the synthetic chemists and lab managers actually using our material, we pick up information independent of sales figures or market trends. These discussions cut across academic, clinical, and industrial development, pointing to improvements or confirming which pain points have genuinely been addressed by our work on the production floor.

    A few years back, a research group flagged an issue with pack sizes—what suited one lab meant waste or storage headache for another. We responded by rolling out more options, from small-scale resealable packs to full-drum shipments, listening to ground-up feedback rather than chasing abstract trends. One industrial synthesis partner noted an observed improvement in solubility consistency since our last process overhaul, validating the small batch adjustments we made to temperature control during drying. Every suggestion, every inquiry, and even every complaint becomes fuel for targeted upgrades and future product design.

    The Manufacturer’s Commitment: Today and Tomorrow

    We wake up and go to work every day knowing the impact 3-(3-Hydroxyphenyl)-Dl-Alanine can deliver across labs, factories, and production lines around the globe. Our technical teams continuously seek to lower trace impurity levels, raise material stability in transit, and expand documentation transparency. As regulatory expectations rise and scientific challenges evolve, we stay engaged in dialogue not just with regulatory bodies or auditors, but with the real-world end user, whose daily workflow depends on reliable, honest supply.

    Technical hurdles never vanish, but the satisfaction of meeting or exceeding customer expectations never fades. Whether it’s chasing a minuscule improvement in HPLC clarity or fielding an urgent request for fast-turnaround documentation, our process remains grounded in practical expertise and genuine conversation. Providing a product like 3-(3-Hydroxyphenyl)-Dl-Alanine is about more than filling orders; it’s an ongoing commitment to the best practices developed over years of direct manufacture, serving those who transform research challenges into breakthroughs—one batch, one conversation, one improvement at a time.