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4-Aminobenzamidine Dihydrochloride

    • Product Name 4-Aminobenzamidine Dihydrochloride
    • Alias 4-ABA dihydrochloride
    • Einecs 219-257-9
    • 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

    828441

    Productname 4-Aminobenzamidine Dihydrochloride
    Casnumber 1670-14-0
    Molecularformula C7H10Cl2N4
    Molecularweight 221.09 g/mol
    Appearance White to off-white crystalline powder
    Solubility Soluble in water
    Meltingpoint around 263-267°C (dec.)
    Storagetemperature 2-8°C
    Purity ≥98%
    Ph 4.5 - 6.5 (10 g/L, H2O, 20°C)
    Synonyms p-Aminobenzamidine dihydrochloride
    Application Protease inhibitor

    As an accredited 4-Aminobenzamidine Dihydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 4-Aminobenzamidine Dihydrochloride is supplied in a 25g amber glass bottle with a white screw cap and clear labeling.
    Shipping 4-Aminobenzamidine Dihydrochloride is shipped in tightly sealed containers to protect it from moisture and contamination. It is packaged in accordance with regulatory guidelines, typically at ambient temperature. Protective outer packaging and clear labeling ensure safe transport. Handle with care, and follow all safety and handling instructions during shipment and receipt.
    Storage 4-Aminobenzamidine dihydrochloride should be stored in a tightly closed container, in a cool, dry, and well-ventilated area. Protect it from moisture, light, and incompatible substances such as strong oxidizers. Store at room temperature (15–25°C), and avoid sources of ignition. Proper labeling and secure storage are essential to maintain chemical integrity and prevent accidental exposure or contamination.
    Application of 4-Aminobenzamidine Dihydrochloride

    Applications of 4-Aminobenzamidine Dihydrochloride in Industrial Manufacturing

    4-Aminobenzamidine Dihydrochloride serves as a specialized molecular scaffold and selective protease inhibitor in multiple industrial processes, especially in biotechnological, diagnostic, and research chemical production sectors. As the original manufacturer, we supply this intermediate to downstream partners with distinct process needs and stringent regulatory demands.

    1. Protease Inhibition in Biological Reagent Manufacturing

    Manufacturers of enzyme-based diagnostic reagents and molecular biology buffers use 4-Aminobenzamidine Dihydrochloride as a potent, reversible inhibitor of serine proteases. During protein extraction and purification, its addition helps maintain target protein integrity by preventing unwanted degradation. These formulations require high purity and stable performance under a range of pH and temperature conditions, especially in proteomics and clinical chemistry kit production.

    Industry compliance standards

    • ISO 13485 (Medical Device Quality Management)
    • Clinical and Laboratory Standards Institute (CLSI) guidelines for reagent quality
    • EU In Vitro Diagnostic Regulation (IVDR, EU 2017/746)
    • USP General Chapters for laboratory reagents

    Typical usage ratio

    • 0.05 – 2 mM final concentration in buffer systems, adjusted according to target protease activity and extraction matrix

    Downstream process integration

    • Added during homogenization or lysate clarification steps in protein extraction workflows
    • Co-formulated in enzyme assay buffers and sample preservation reagents

    Final product types

    • Protein extraction kits
    • Enzyme assay buffer solutions
    • Clinical diagnostics reagent kits
    • Proteomics research consumables

    2. Chromogenic Substrate Development for Clinical Diagnostics

    Downstream manufacturers of chromogenic assay substrates utilize 4-Aminobenzamidine Dihydrochloride during the synthesis and stabilization of trypsin- and thrombin-sensitive kits, which require precise protease control to maintain assay specificity and reduce background signal. Its function as a highly specific serine protease inhibitor directly influences the quality and shelf-life of blood coagulation and fibrinolysis diagnostic products.

    Industry compliance standards

    • Good Manufacturing Practice (GMP) for In Vitro Diagnostics
    • ISO 9001:2015 for chemical manufacturing
    • European Pharmacopoeia (Ph. Eur.) for diagnostic reagents
    • FDA 21 CFR Part 820 (Quality System Regulation)

    Typical usage ratio

    • 0.1 – 2.5 mmol/L, based on substrate reactivity and sensitivity requirements

    Downstream process integration

    • Blended with chromogenic substrates during freeze-drying (lyophilization) or liquid kit formulation steps
    • Introduced at the stabilization phase to preserve reactivity prior to final packaging

    Final product types

    • Blood clotting time assay kits (PT, aPTT)
    • Fibrinolytic activity detection substrates
    • Enzyme activity test strips
    • Clinical chemistry diagnostics panels

    3. Peptide Synthesis and Purification Aids

    Chemical peptide synthesis companies use 4-Aminobenzamidine Dihydrochloride during both production and purification to suppress proteolytic breakdown of peptides in solution. This addition greatly improves peptide yield, especially when producing substrates, inhibitors, or bioactive peptides for the pharmaceutical and research sectors. Manufacturers demand strict batch-to-batch consistency, very low residual solvent, and minimal bioburden for compliance with downstream validation protocols.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia 10.0 Monograph 07/2015:2738 for synthetic peptides
    • USP <1045> Biotechnology-Derived Articles

    Typical usage ratio

    • Usually 0.5 – 3 mM in peptide coupling and purification solutions, adjusted to extent of protease contamination and required peptide stability

    Downstream process integration

    • Added to synthesis reactors during chain elongation and cleavage stages
    • Used in HPLC or preparative purification solutions for enhanced peptide recovery

    Final product types

    • Synthetic therapeutic peptides
    • Bioactive peptide standards
    • Peptide substrate reagents

    4. Cell Culture Protease Protection in Bioprocessing

    Bioprocess engineers employ 4-Aminobenzamidine Dihydrochloride to minimize proteolytic degradation of recombinant proteins during mammalian and bacterial cell culture harvest. Its application protects critical biotherapeutic products from intracellular and secreted serine proteases, preserving product structure for downstream purification and formulation. Raw material traceability, absence of animal-derived components, and compatibility with GMP biologics production remain essential.

    Industry compliance standards

    • ICH Q5A/B Quality of Biotechnological Products
    • FDA Guidance for Industry: Process Validation: General Principles and Practices
    • USP <1047> Good Manufacturing Practices for Bulk Pharmaceutical Excipients
    • ISO 22442 for animal tissue-free raw materials

    Typical usage ratio

    • 0.2 – 2 mM, optimized according to cell line, expressed protein, and process conditions

    Downstream process integration

    • Added to culture media or harvest buffer prior to primary clarification (centrifugation or filtration)

    Final product types

    • Recombinant monoclonal antibodies
    • Recombinant enzymes
    • Biopharmaceutical protein drugs
    • Cell-derived biological reference standards

    5. Research-Grade Proteomics and Structural Biology Reagents

    Producers of research kits and structural biology consumables rely on 4-Aminobenzamidine Dihydrochloride for accurate mass spectrometry and crystallographic studies. By inhibiting baseline proteolysis, this additive ensures high-fidelity protein mapping and stable crystallization, aiding discovery of protein functions and interactions. The material must meet analytical reagent (AR) or molecular biology grade, verified by spectral purity and protease inhibition tests for reliable downstream application.

    Industry compliance standards

    • ISO/IEC 17025 (Testing and Calibration Laboratories)
    • Research Use Only (RUO) labeling compliance
    • OECD Principles on Good Laboratory Practice
    • Analytical Reagent specification (ACS/AR)

    Typical usage ratio

    • 0.1 – 1 mM in protein sample preparation kits, adjusted based on proteome complexity and sample volume

    Downstream process integration

    • Incorporated into protein extraction reagents for LC-MS/MS workflows
    • Used to stabilize samples prior to protein crystallization screening

    Final product types

    • Proteomics sample kits
    • Protein crystallography reagents
    • Structural biology buffers
    • Mass spectrometry standards
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    Certification & Compliance
    More Introduction

    4-Aminobenzamidine Dihydrochloride: A Manufacturer’s Perspective

    Introduction to 4-Aminobenzamidine Dihydrochloride

    Every time we scale up a batch of 4-Aminobenzamidine Dihydrochloride in the plant, there’s the unmistakable sensation of working with something unique. A lot of labs, research groups, and pharmaceutical developers rely on this compound, but few consider what it takes to keep quality consistent. As manufacturers, we’ve come to see 4-Aminobenzamidine Dihydrochloride not just as a catalogue name, but as a crucial building block in modern biochemical and pharmaceutical exploration.

    With a chemical profile marked by high purity and thermally stable crystalline properties, our material routinely goes out to clients asking for reliability—not just activity in a test tube. Standard packing is done in moisture-tight HDPE containers, avoiding any cross-contamination, and particle sizing is monitored. The empirical formula, C7H10N4 · 2HCl, and its physico-chemical fingerprint are monitored every batch to avoid deviation, because there is no room for shortcuts when customers set up enzyme inhibition assays or run affinity experiments.

    How We Make a Difference: Deep Quality Focus

    Producing 4-Aminobenzamidine Dihydrochloride takes more than following a reaction protocol. Each run requires careful attention at every purification stage. In our experience, factors such as solvent quality, temperature control, and even agitation rates during crystallization can alter batch purity. This is particularly critical because trace levels of contaminants—such as sulfates or unreacted starting materials—can interfere with sensitive bioassays.

    Every year, new customers arrive disappointed by inconsistent material from bulk traders. They often share stories about issues arising simply due to supplier negligence—fungal odor developing during storage, loss of solubility, or yellowing after a few weeks. Since the downstream uses in serine protease inhibition or chymotrypsin activity mapping demand precise molecular action, even a small shift in product profile undermines entire research projects. Everything from the high-pressure columns we use for purification to our sealed storage units is selected with these intense expectations in mind.

    Applications in Modern Life Science

    Most requests for 4-Aminobenzamidine Dihydrochloride stem from its role as a serine protease inhibitor. In biochemical research, scientists use the molecule to keep proteolytic enzymes in check, especially when they’re working with delicate protein samples or mapping enzymatic pathways. Some clients, especially in pharmacology, take advantage of its high specificity in enzyme-inhibition studies. They trust solid, reproducible results—not unpredictable side reactions or drifting activity profiles.

    Over the years, universities and diagnostics kit-makers have shared their methods for using the product in affinity chromatography. Its guanidino functional group allows selective binding, enabling purification of proteases from blood plasma and tissue extracts. Our facility regularly supports customers preparing for scale-up processes, where they require tens of kilograms of 4-Aminobenzamidine Dihydrochloride with the same profile as analytical-grade samples. These use-cases demand a supplier who not only produces but understands the molecule's behavior through every manipulative step, from preparation to storage.

    What Sets Our Product Apart

    Decades of manufacturing experience have taught us that every step in synthesis, isolation, and packaging can make or break a compound’s utility. We have invested in high-sensitivity chromatographic systems and spectroscopic analytics that trace all impurities down to low ppm ranges. A side-by-side comparison with products from re-packagers usually reveals higher salt impurities or incomplete conversion to the dihydrochloride salt in third-party samples. These factors can mean unpredictable solubility or false readings in sensitive enzyme measurements.

    We hear from customers comparing our product to other benzimidines, especially unsubstituted benzamidine hydrochloride. Here’s where real-world usage highlights differences—our aminobenzamidine variant brings an NH2 substituent at the para position, lending it distinct reactivity with certain enzyme classes. For researchers probing serine proteases, this translates to sharper inhibitory profiles and better selectivity in competitive assays.

    With storage, we use moisture-impervious containers and constant humidity checks to preserve the material’s crystal integrity and minimize caking. Many traders overlook these factors. Poor storage often leaves end-users struggling with hard blocks or contaminated product. Our customers regularly report longer shelf stability and dependable dissolution, thanks to these basic manufacturing practices that only develop through years of hands-on process optimization.

    Real World Challenges and Solutions

    Raw material sourcing often comes with unexpected variances in grade and reactivity. We recall several instances where vendors shifted synthetic intermediates or changed drying protocols, causing subtle but impactful changes. In one notable situation, a supplier delivered a lot with increased moisture content, and even small carry-over altered crystallization and increased product hydrolysis during extended storage.

    Addressing these hitches requires a vigilant QC department and management willing to reject off-specification inputs, even at the expense of delay or added procurement cost. There are days when technical practicality must override procurement convenience—a lesson learned by those who have dealt with end-product recalls or returns. Running an in-house program for tracing impurities and monitoring batch-to-batch reproducibility pays off, because the researchers counting on your material rarely have time to run their own full diagnostics before every experiment.

    Feedback and Continuous Process Improvement

    Customer labs frequently provide us with feedback, highlighting obscure solubility issues, haze during mixing, or color drift under specific lighting. It’s an ongoing partnership—when a discrepancy turns up, such as turbidity in a buffered solution, we dive into batch records and cross-reference synthetic variables or storage logs. One university team pinpointed a rise in baseline UV absorbance in their preparations, which led us to uncover minor aromatic residues from an early synthetic intermediate. Stringent clean-up and solvent switching resolved the issue.

    Open communication with buyers accelerates learning cycles on both sides. Major pharmaceutical and diagnostics clients sometimes request co-validation or tailored analysis, and after analyzing causes together, we adapt processes to meet their evolving research requirements. This collaboration sustains higher product quality and keeps us at the forefront of specialty chemical supply.

    Scale and Customization: Meeting Unique Needs

    While the typical demand centers on research-grade quantities, we have ramped up synthesis to meet commercial and semi-commercial scale needs. Larger demands call for not just technical prowess but application-specific understanding. Often, customers want slightly different specifications, such as narrow particle size windows or low chloride residuals, for process-sensitive applications.

    Rolling out these changes is never trivial. Minor tweaks in filtration or solvent stripping can ripple through the whole plant. We train technicians to monitor for subtle deviations and maintain tight lot-traceability. It’s more work, yet feedback from clients who save days in downstream purification or avoid failed batches speaks volumes about the return on investment.

    Environmental Responsibility in Practice

    Chemical manufacturing always creates a balance between efficiency and environmental impact. We have overhauled solvent use policies and recovery systems to cut emissions and reduce residues heading to waste streams. Suppliers often take these efforts for granted, but manufacturers shoulder the direct responsibility. For example, the hydrochloride conversion phase historically yielded acidic wastewater; through in-plant neutralization and closed-loop recycling, we have cut that discharge by more than half.

    Teams in regulatory compliance and quality assurance monitor local and global guidelines, not just to tick boxes, but to make certain that operations stay future proof. We provide customers with clear documentation tracing each synthetic lot, from starting material lot, through processing steps, to final QC data. This audit trail has let a number of our buyers pass their own inspections or respond to regulatory queries without roadblocks—an often-overlooked but critical value addition by direct manufacturers.

    Looking to the Future: Adapting to Research Trends

    Research shifts fast. Over the past five years, demand has picked up in fields previously unrelated to standard enzyme inhibition. Some customers have adapted 4-Aminobenzamidine Dihydrochloride for work in neurological protein complexes, exploring the subtleties of molecular signaling. Requirements for trace metal absence or specific optical activity have started filtering into new orders.

    Each of these niche requests brings its own set of production challenges. We maintain dialogue with research groups to learn about performance in new assay systems—sometimes modifying purification or drying regimens to conform with trend-setters in the field. Close relationships with innovators mean we can help shape, not just follow, next-generation specialty reagents. Our plant staff and development chemists have found genuine satisfaction not just in meeting demand but in helping advance the science itself.

    The Human Element: What Manufacturing Really Means

    Everything discussed so far—from purity assurance to environmental controls—rests on a foundation of hands-on know-how. Staff in our blending, weighing, quality, and logistics teams bring decades of chemical handling and analytical experience. A batch of 4-Aminobenzamidine Dihydrochloride tells a story shaped by dozens of skilled professionals—each with a stake in every shipment. Troubleshooting is part of daily life. We’ve resolved blocked transfer lines, crystallizer leaks, and even weather-induced packaging failures. Each fix strengthens our workflow and product reliability.

    Customers sometimes call us after business hours, searching for advice on solubility, filtration, or compatibility with other reagents. These interactions reinforce that real chemical manufacturing relies on interpersonal trust as much as technical process. Laboratories and kit-makers want to count on the person at the other end of the shipment—not just the certificate in the box.

    Comparing 4-Aminobenzamidine Dihydrochloride to Other Inhibitors and Products

    Many clients enter their projects comparing inhibitor panels: benzamidine hydrochloride, aminobenzamidine derivatives, or even unrelated protease agents like PMSF. Experience in synthesis and multi-batch feedback has shown us how 4-Aminobenzamidine Dihydrochloride offers greater selectivity in applications targeting certain serine proteases. The added amino group in the molecule enhances binding reactivity and impacts specificity—facts reflected in client studies using high-throughput screening settings.

    Those familiar with cost-saving approaches—buying cheaper off-brand inhibitors, sometimes as technical-grade powder—often find themselves repeating critical experiments. The fine points of salt form, hydration state, and trace contaminants become apparent only when results drift or protein yields drop for no clear reason. If customers compare our pure crystalline dihydrochloride form with material from bulk resellers, performance in enzyme systems frequently shows shorter lag phases, higher inhibition plateaus, and reduced background readings.

    Unlike more aggressive or unstable inhibitors, 4-Aminobenzamidine Dihydrochloride maintains activity after multiple freeze-thaw cycles if dried and handled correctly. Our protocol for closing each production run, including vacuum-drying and tamper-resistant sealing, means customers receive the same compound we confirm in analytical labs—not a rebagged, air-exposed secondary product.

    Reliability Through Direct Manufacturing

    In today’s market, genuine, direct production makes an obvious difference. We don’t outsource final purification or farm out handling to undisclosed intermediaries. Everything—down to last QC chromatogram or moisture check—stays within sight of our plant team, creating direct accountability. The advantage: customers know exactly who made their chemicals, under what protocols, with real analytic data backing up every claim.

    As research standards tighten across life science and diagnostics, project timelines and resource use become more pressed. The inability to rely on a compound like 4-Aminobenzamidine Dihydrochloride derails research, wastes costly reagents, and delays new discoveries. Close monitoring of raw inputs, process stability, and fulfillment details does more than keep the lights on; it fuels progress in new arenas day after day.

    Summary of Commitment

    We see every lot as a commitment—to our technical craft, to the future of research, and to the trust our customers place in material that’s ready for their toughest challenges. Over decades, our approach has changed plenty: better analytics, tighter feedback cycles, more responsible approaches to the environment. What remains constant is the conviction that hands-on manufacturing creates more than just a chemical—it builds the backbone for progress in every lab relying on results that can’t afford compromise.

    For us, 4-Aminobenzamidine Dihydrochloride means more than a label or a data sheet. It signals a chain of accountability that runs from our reactor vessels to benches and instrument platforms all over the world. As we keep refining every step—from synthesis to shipment—the practical needs of researchers guide us. The result: a product that not only performs on paper, but delivers every day, batch after batch.