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4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid

    • Product Name 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid
    • Alias Boc-PABA
    • Einecs 6975-74-8
    • 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

    517653

    Product Name 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid
    Cas Number 112898-00-7
    Molecular Formula C13H17NO4
    Molecular Weight 251.28
    Appearance White to off-white solid
    Purity Typically ≥98%
    Melting Point 158-160°C
    Solubility Slightly soluble in water; soluble in organic solvents such as DMSO, DMF, ethanol
    Storage Temperature 2-8°C
    Synonyms 4-(N-Boc-aminomethyl)benzoic acid
    Smiles CC(C)(C)OC(=O)NCC1=CC=C(C=C1)C(=O)O
    Inchi InChI=1S/C13H17NO4/c1-13(2,3)18-12(17)14-9-10-5-7-11(8-6-10)8-6-10)9-14-12(17)18-13(1,2,3)4-10(8-6-10)C(=O)O

    As an accredited 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 100g of 4-[(Tert-Butoxycarbonylamino)methyl]benzoic acid is supplied in a sealed amber glass bottle with tamper-evident cap.
    Shipping `4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid` is shipped in a tightly sealed container, protected from moisture and light. It is typically transported at ambient temperature, unless specified otherwise, and complies with chemical safety regulations. Appropriate labeling and documentation are provided to ensure safe handling during transit.
    Storage 4-[(Tert-Butoxycarbonylamino)Methyl]benzoic acid should be stored in a cool, dry, and well-ventilated area, tightly sealed in its original container. Protect it from moisture, heat, and direct sunlight. Store away from incompatible substances such as strong acids, bases, and oxidizing agents. Use gloves and eye protection when handling, and ensure proper labeling to prevent accidental misuse.
    Application of 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid

    Applications of 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid in Industrial Manufacturing

    4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid serves as a key intermediate across multiple specialty chemical synthesis routes, primarily valued for its stable protected amine group and compatibility in multi-step organic transformations. Our manufacturing expertise ensures consistent quality, supporting downstream producers in meeting stringent industry requirements. Below, we detail recognized industrial application scenarios with focus on compliance standards, formulation guidance, process integration, and typical end-use products.

    1. Pharmaceutical Intermediate for Peptide Synthesis

    This compound functions as a Boc-protected amino acid derivative used in the solution-phase and solid-phase synthesis of peptide APIs. Its steric attributes help suppress undesired side reactions, while Boc deprotection aligns with GMP processes. Manufacturers prefer this intermediate for constructing peptide linkers with precise functionalization.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP <797> Pharmacopeial Convention standards for compounding
    • EDQM CEP requirements for intermediates
    • 21 CFR Part 211 cGMP for finished pharmaceuticals

    Typical usage ratio

    • Used at 0.95–1.10 molar equivalents relative to the target amino-linked peptide sequence; exact dosing tailored by coupling efficiency and desired synthesis yield.

    Downstream process integration

    • Added directly to automated solid-phase synthesizer resin swelling vessel or batch reaction flask during fragment elongation step; Boc group later removed prior to final product cleavage.

    Final product types

    • Active pharmaceutical ingredient (API) polypeptides
    • Custom peptide therapeutics
    • Diagnostic peptide standards
    • Peptide conjugate drugs

    2. Building Block for Small Molecule Drug Discovery

    Research and process labs integrate this benzoic acid derivative as an amine-protected unit for rapid generation of compound libraries targeting new molecular entities. Substituted on the aromatic ring, it participates in Suzuki-Miyaura and amide coupling reactions for scaffold diversification.

    Industry compliance standards

    • OECD Principles of Good Laboratory Practice (GLP)
    • FDA CFR Title 21 Part 58 for nonclinical laboratory studies
    • REACH Registration (for research use)
    • SOPs for High-Throughput Screening Facility compliance

    Typical usage ratio

    • 0.2–3.0 mmol per reaction vessel in combinatorial set-ups; scaled according to automated plate capacity and target library size.

    Downstream process integration

    • Charged as a key substrate into parallel synthesis arrays before further functionalization or deprotection; contributes to core library structure formation before hit-to-lead optimization.

    Final product types

    • Lead compound libraries
    • Benchmark analytical reference standards
    • Experimental new drug substances (NCE precursors)
    • Drug candidate intermediates for preclinical evaluation

    3. Intermediate for Imaging Agent Synthesis

    Specialty fine chemical operations utilize the stable Boc-protected amino moiety for introducing specific functionalities into benzoic acid scaffolds destined for radiolabeling or fluorescent tagging. The compound's orthogonal protection characteristics simplify integration into multi-step tracer assembly lines.

    Industry compliance standards

    • ISO 13485 for medical device related chemical ancillaries
    • Ph. Eur monographs as applicable to radiopharmaceutical intermediates
    • US FDA cGMP for exploratory IND studies on diagnostic tracers
    • International Society of Radiopharmaceutical Sciences (ISRS) guidelines

    Typical usage ratio

    • 0.8–1.2 molar equivalents per labeling batch; modification according to specific radioisotope or fluorophore coupling requirements.

    Downstream process integration

    • Introduced during initial fragment assembly or terminal functionalization prior to radiolabel or dye coupling; Boc group removed immediately before conjugation to ensure free amine availability.

    Final product types

    • Positron Emission Tomography (PET) imaging probes
    • Single Photon Emission Computed Tomography (SPECT) tracers
    • Fluorescently labeled diagnostic agents
    • Biomolecule imaging conjugates

    4. Precursor for Functional Polymeric Material Synthesis

    Producers of specialty polymers and advanced materials apply this acid as a modular building block to introduce protected amine groups into bespoke polyamides or polyurethanes. The compound's Boc group affords temporal control during multi-stage polymer chain extension before final deprotection and cross-linking.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems
    • REACH Regulation (EC) No 1907/2006 for monomer usage
    • RoHS Directive (2011/65/EU) for restricted substances in electrical/electronic materials
    • ASTM D638 for mechanical property validation

    Typical usage ratio

    • 0.5–2.0% by weight of total monomer feed; loading tailored according to desired amine-functional density in the polymer backbone.

    Downstream process integration

    • Co-reacted with diisocyanates or diamines during prepolymer formation, followed by deprotection under acidic conditions before final polymer curing or cross-linking steps.

    Final product types

    • Amine-functionalized polyamide resins
    • Reactive polyurethane adhesives
    • Custom surface coating precursors
    • Smart material films for sensor and biointerface applications

    5. Raw Material for Custom Bioconjugate Synthesis

    Contract manufacturing organizations deploy this Boc-protected acid in the upscaling of functional linkers for antibody-drug conjugates and enzyme-labeling strategies. Its controlled release of amine functionality enables selective bioconjugation under mild conditions with reduced degradation risk.

    Industry compliance standards

    • US FDA 21 CFR Part 820, Quality System Regulation
    • ISO 22442-2 for biological raw material assessment
    • EMEA/CHMP QWP/251344/2006 for chemical manufacturing of bioconjugates
    • ICH Q9 Quality Risk Management for biopharmaceuticals

    Typical usage ratio

    • Loaded at 1.0–1.5 equivalents relative to protein or oligonucleotide labeling sites; adjusted to match molar exposure and required conjugation efficiency.

    Downstream process integration

    • Incorporated during aqueous organic linker activation, joined to protein or nucleic acid through carbodiimide or click chemistry; Boc group removal scheduled at late stage to prevent premature amine exposure.

    Final product types

    • Antibody-drug conjugates (ADC intermediates)
    • Protein–small molecule bioconjugates
    • Labeled enzyme conjugates
    • Customized oligonucleotide probes
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    Certification & Compliance
    More Introduction

    4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid: Experience-Driven Value from Direct Manufacturing

    Understanding Our Unique Approach to Specialty Chemicals

    As a chemical manufacturer with years of hands-on experience, we see many compounds come and go, each with its set of challenges and opportunities. 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid captures attention in both pharmaceutical and research circles, not because of buzzwords or generic claims, but through the way it performs daily on the lab bench and in scaled production. Unlike the more common benzoic acids dotted across the market, this molecule, with its distinctive tert-butoxycarbonyl group, provides a clear pathway for protecting amine moieties during complex synthetic work.

    Production techniques matter. Many industry stories revolve around third-party trade, but there is a difference in nuance and reliability when a molecule like this comes directly from the source. Every batch we produce tracks back through carefully monitored process control, and each time, the results speak for themselves not just in meeting published specifications, but also in hardworking purity and consistency that persists through scale-up. We listen closely to what process chemists and research leads demand most—predictable performance, ease of purification, and consistent assay—especially for those advancing peptide or small molecule candidate programs.

    Meeting the Needs of Modern Synthesis

    This benzoic acid derivative plays a key role as a building block in multi-step organic synthesis. We’ve noticed researchers in medicinal chemistry appreciate the tert-butoxycarbonyl (BOC) protection, which enables selective deprotection without disturbing other sensitive parts of the molecule. The molecule, with CAS number 84676-43-9, offers a careful balance between stability for storage and reactivity in coupling reactions. From years in pilot and production facilities, we see that even subtle impurities can derail synthesis, especially downstream in pharmaceuticals. We maintain rigorous lot traceability, leverage advanced purification, and favor feedback-driven continuous improvement—these aren’t just procedures penned for documentation, but deeply rooted responses to real-world bottlenecks that hinder R&D pace.

    Production scale never stays static. Some demand comes from gram-scale synthesis for early discovery, and sometimes projects ramp to multi-kilogram batches for clinical trial material. We design our process stretches to match both, keeping not just purity, but also supply reliability in focus. Our direct vantage point lets us notice things traders or brokers won’t spot. For instance, 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid’s crystalline habit, bulk density, and hygroscopic tendency directly influence how it behaves on the warehouse shelf or during dispensing—details that sound trivial until an inconvenient clump wastes a day in the lab. We modify process parameters and packaging on these exact grounds, because we’re accountable for the outcome all the way from drum opening to final downstream use.

    Beyond the Certificate of Analysis: Actual Performance

    We have fielded countless requests to compare this compound to its unprotected or differently protected analogs. Differences go beyond structure. Our experience lines up with published literature: the BOC group offers distinctive advantages in peptide and small molecule synthesis. Reports from customers show improved yields, fewer purification headaches, and cleaner subsequent transformations when using this protected version as a starting material. Over time, as demand for custom synthesis support has soared, we see many organizations returning to 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid after testing out less selective or trickier alternatives, citing a smoother path to their target molecules.

    Each kilogram embodies precise reaction controls, not just raw material selection. We run multiple analytical checks—NMR, HPLC, water content, melting point—adjusting and correcting before a batch ever leaves our site. This diligence creates a difference researchers and process chemists quickly notice: minimized side reactions, cleaner intermediates, and less variability from batch to batch, especially compared to lots sourced from aggregators or non-specialist suppliers. Many of our largest clients work under GMP or pre-GMP conditions, and while this product itself doesn’t always require those controls, our ability to scale and document production to that standard brings peace of mind, particularly for projects that may evolve toward regulated spaces.

    Technical Profile: Connecting Structure to Use

    The structure of 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid imparts clear synthetic benefits. The benzene ring serves as a sturdy backbone for further functionalization, while the protected aminomethyl group allows for orthogonal protection strategies in routes targeting complex natural products or API precursors. Chemists regularly discuss the frustration of dealing with unprotected aminomethylbenzoic acids, where amine reactivity interferes with acylations or cross-couplings. With the BOC-protected version, selective transformations become possible, facilitating both manual bench work and automation in parallel synthesis setups.

    Our ongoing work with academic and commercial partners reveals the value of reliable, reproducible lot quality. For example, early medicinal chemistry campaigns move much faster when reagent-level consistency stays tight, and analytical profiles match batch after batch. Variability, especially in melting range, assay, or residual solvents, pushes projects off schedule—direct experience fine-tunes our response to these risks. We use compact packaging or moisture-resistant liners based on actual process feedback, preventing the cross-contamination or stability issues that shadow resales or rebottling by third parties.

    Navigating the Transition from Lab to Plant

    Crossing the threshold from milligram experiments to kilogram-scale production uncovers practical lessons that don’t show up in technical data sheets. Controlled access to raw tert-butyl bromoacetate, optimized purification steps, and effective waste management all stem from deep familiarity with the process. We identify small process tweaks—longer vacuum drying to limit residual ethanol, improved filtration to reduce color-forming byproducts, or extended post-reaction holds to encourage full conversion—that ensure each order maintains the same high quality regardless of size or timing.

    The dialogue between chemist and operator grounds our process improvements. Customers don’t want to wonder whether the next batch will resemble the last; they want to build robust, transferable workflows across scales and geographies. We respond directly to supply chain disruptions or spikes in demand by reserving raw material stock and upgrading production capacity. Flexible response is more than a promise—our daily responsibility reaches from solid technical roots to swift, practical adjustments, minimizing surprises down the line.

    Comparing Alternatives and Defining Clear Benefits

    Choice of protection group influences dozens of decisions in multistep chemical syntheses. As demand grows for new active pharmaceutical ingredients, process chemists weigh the balance between stability, deprotection ease, and byproduct profile. The tert-butoxycarbonyl group provides a level of selective protection not easily matched by acetyl or benzyl alternatives. Deprotection proceeds under mild acidic conditions—avoiding harsh reagents that could degrade sensitive intermediates further down the pipeline.

    Unprotected aminomethylbenzoic acids often introduce complications in purification and side reactions, which slow down process development and limit scale-up. We watch trends and integrate the collective learning: BOC-protection lowers the barrier to safe and clean reactions, saving time both in development and analytical follow-up. Direct production allows us to update target specifications in response to customer needs, whether it’s tighter limits on residual solvents or tailored batch sizes, all without the lag or confusion that can come from navigating multiple intermediaries.

    Staying Close to End Users: Real-World Improvements

    Feedback from those at the bench, and those running kilo-scale batches, shapes our daily priorities. To chemists synthesizing library members, every margin of reliability counts. Common pain points we encounter—batch-to-batch variability, off-spec impurity levels, difficult handling properties during weighing and transfer—push us to keep refining both synthesis and packaging. In fact, routine conversations with client R&D suggest that avoiding delays from inconsistent supply outweighs almost any incremental cost consideration, especially when projects eye translation to late-phase development.

    We let our experience guide ongoing training and investment. Operators at our facility know not just the theory behind purity requirements, but how to spot and address subtle shifts in product quality during drying, packaging, and storage. Choosing the right packaging, for example, stems from dozens of conversations about shelf stability and safe transfer in humid climates. The whole chain—starting from in-house synthesis, through multi-step purification, to pragmatic final testing—hangs together on lessons learned over years moving material from our facility to the real world.

    Quality by Experience, Not Just by Specification

    We have seen projects thrive or stall based on their ability to secure a solid supply of critical intermediates. Many of our clients work in environments where timelines can be tight, regulatory expectations high, and adaptability a must. Market news often features sudden shortages or pricing swings. Because we control the process from raw material procurement to finished product shipment, we bring a stability and responsiveness that’s hard to duplicate through arms-length channels.

    Certificates of Analysis provide a baseline, but what really matters is how each lot performs under actual application conditions—how easily it dissolves for coupling, how cleanly it deprotects, how reliably it stores through temperature swings and long transport times. Regular communication with synthetic chemists and engineers informs each batch campaign, shaping our protocols with direct user insight. Issues like caking, electrostatic cling, or minor solvent retention find immediate practical solutions—switching from bulk drums to foil-lined pouches, or adjusting final milling steps for freer flow.

    Direct Support for Innovation

    As research workflows increase in sophistication, and regulatory scrutiny rises, the expectations of material quality and traceability grow as well. We treat these requirements not as hurdles but as part of the job. All our production runs maintain complete, auditable documentation, connecting each lot to both raw material origin and analytical testing. For groups exploring new synthetic routes, or seeking to modify the structure of their key molecules, the confidence that comes from transparent and consistent sourcing can make a practical difference in R&D pace and success rates.

    We support innovation by keeping the door open to technical requests and process optimization. Adjusting impurity profiles, offering tailored packaging, or enabling same-batch repeat shipments are routine conversations. Repeat customers often play a leading role in prompting product upgrades. Technical feedback—such as shifts in IR absorption bands or minor melting point mismatches—filter into our SOP revisions, ensuring that the consistency required for sensitive downstream chemistry stays front and center.

    Bridging Lab Ideas with Real-World Scale

    The value of 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid goes beyond its role as a protected benzene derivative. In our direct manufacturing practice, every request is an opportunity to strengthen quality knowledge and refine process control. The molecule’s distinct structure unlocks synthetic flexibility for research teams, but the benefits really show when chemistry moves beyond the early bench stage. Technical challenges—unexpected color during scale-up, changes in solubility, or minor physical form variations—get resolved not through canned answers, but through deep production experience and a clear view of how these details play out in actual application.

    We include the needs of commercial scale in our batch planning. Surges in demand, or sudden shifts in downstream targets, no longer pose the same challenges they do for organizations relying on longer supply chains. By anticipating these trends, we keep key intermediates in reach for research partners and CDMOs advancing new therapeutics or specialty products.

    Drawing the Line Between True Manufacturing and the Rest

    Direct manufacturing delivers more than access to a product. It creates a flow of information from user, through process, back to starting material. Each lot that moves to a customer’s site carries the weight of combined practical knowledge—collected from repeated handling, extended shelf stability testing, and actual reaction outcomes shared by scientists who rely on these materials daily. Transparency—about process, about origins, about technical limitations—builds trust that outlasts commodity price shifts or fleeting market trends.

    There are clear differences between direct manufacturing and supply through traders or repackagers. We exercise control over each leaching step, every washing protocol, and each crystallization parameter. Improvements don’t pass through bureaucratic delay; they appear in the next lot. While others promote generic “high purity” or “broad suitability,” our experience builds the ability to solve granular issues—residual odor, off-color, or out-of-spec dissolution—that matter from the bench to the pilot plant.

    Listening, Learning, and Responding from the Ground Up

    Staying close to customers means solving real-world challenges: minimizing delays, guaranteeing batch-to-batch repeatability, and supporting creative problem-solving in new chemical discovery. We invest in local technical support and resource training, so issues—whether traced to physical form or solvent content—get immediate and knowledgeable answers. Ongoing feedback guides both our internal quality practices and our outward-facing support.

    For groups working in tightly regulated settings or projects where setbacks can slow multiyear research plans, the kind of attentiveness that comes from direct manufacturing makes a practical, tangible difference. Secure, constant supply helps shorten the path from discovery to product. Teams can plan for the long term, knowing their building blocks keep pace not just in paper specification but in real bench performance.

    From Experience, Reliable Solutions

    Years in chemical manufacturing reveal that performance and problem-solving stem from methods rooted in day-to-day use, not from claims written at a distance. For 4-[(Tert-Butoxycarbonylamino)Methyl]Benzoic Acid, direct production allows us to channel user feedback, process knowledge, and ongoing technical refinement into every batch. This hands-on approach doesn’t just promise quality—the experience proves it, batch after batch, supporting research and manufacturing teams as their needs evolve.