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Piperazine-2-Carboxylic Acid Dihydrochloride

    • Product Name Piperazine-2-Carboxylic Acid Dihydrochloride
    • Alias Piperazine-2-carboxylate dihydrochloride
    • Einecs 251-466-0
    • 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
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    Specifications

    HS Code

    759829

    Product Name Piperazine-2-Carboxylic Acid Dihydrochloride
    Cas Number 4264-88-0
    Molecular Formula C5H10N2O2·2HCl
    Molecular Weight 205.07 g/mol
    Appearance White to off-white solid
    Melting Point 235-239°C (decomp.)
    Solubility Soluble in water
    Purity Typically ≥98%
    Storage Temperature Room temperature, dry conditions
    Synonyms 2-Piperazinecarboxylic acid dihydrochloride
    Chemical Structure Cyclic diamine with carboxylic acid group and two HCl units

    As an accredited Piperazine-2-Carboxylic Acid Dihydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 100g of Piperazine-2-Carboxylic Acid Dihydrochloride packaged in a sealed, amber glass bottle with a tamper-evident screw cap.
    Shipping Piperazine-2-Carboxylic Acid Dihydrochloride should be shipped in tightly sealed containers, protected from moisture and light. Use appropriate labeling and documentation per regulatory guidelines. During transport, maintain ambient temperature and handle with care to avoid damage or contamination. Comply with applicable chemical transportation laws and safety data sheet (SDS) recommendations.
    Storage **Piperazine-2-Carboxylic Acid Dihydrochloride** should be stored in a tightly closed container, protected from moisture and direct sunlight. Keep it in a cool, dry, and well-ventilated area, ideally at room temperature (15–25°C). Avoid incompatible substances, such as strong oxidizing agents. Store away from food and drink, and ensure the storage area is clearly labeled and access restricted to authorized personnel.
    Application of Piperazine-2-Carboxylic Acid Dihydrochloride

    Applications of Piperazine-2-Carboxylic Acid Dihydrochloride in Industrial Manufacturing

    Piperazine-2-carboxylic acid dihydrochloride serves as a fundamental intermediate across various specialized manufacturing sectors. Our production facility supplies this material to clients operating in demanding environments focused on regulated synthesis, precision formulation, and compliant downstream conversion. Below, we highlight verified industrial application segments, each with unique process, compliance, and performance requirements.

    1. Pharmaceutical Active Pharmaceutical Ingredient (API) Intermediate Synthesis

    Pharmaceutical companies rely on this compound as a protected piperazine building block during API synthesis, especially for piperazine-derivative drugs targeting neurological and anti-infective indications. The material allows for clean, high-purity introduction of the piperazine moiety without risk of side-reactions from free amines. Handling under cGMP conditions ensures traceability. It enters as a salt form precursor, reacting in amidation and cyclization steps to form specialty intermediates in multi-step synthesis under tightly controlled solvent and temperature ranges.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • 21 CFR Part 211 (US FDA requirements for finished pharmaceuticals)
    • EU EudraLex Volume 4 Part II (EU requirements for APIs)
    • Ph. Eur., USP, and JP monographs for related substances and residual solvents

    Typical usage ratio

    • Stoichiometric equivalent to desired piperazine-substituted positions, often 0.9–1.1 molar ratio per reaction stage
    • The ratio is adjusted based on side-chain coupling efficiency and in-process analytics

    Downstream process integration

    • Introduced in early to mid-stage API route following protected amide formation
    • Used in cyclization, acylation, or amide coupling steps with in-process controls for residual salt removal
    • Integrated under batch or semi-continuous reactor configurations

    Final product types

    • Piperazine-based pharmaceutical APIs (anthelmintic, antipsychotic agents, selective receptor modulators)
    • Key starting materials for small-molecule drug substance synthesis

    2. Peptide Modification for Biopharmaceutical Production

    Biopharma and contract manufacturing organizations use piperazine-2-carboxylic acid dihydrochloride as a protected amino unit for site-specific modification of peptide chains. The hydrochloride salt provides stability, favoring peptide coupling and cyclization while reducing racemization risk. Its use is prevalent during solid phase and solution phase peptide synthesis when introducing conformational constraints or preparing non-proteinogenic peptide building blocks.

    Industry compliance standards

    • ICH Q11 (Development and Manufacture of Drug Substances)
    • US FDA Guidance for Industry - Peptide Drug Products
    • WHO Good Manufacturing Practices for Biologics
    • ISO 9001:2015 for quality management in biologics manufacturing

    Typical usage ratio

    • Used as a direct coupling partner in 1.0–1.2 molar equivalents to N-terminal coupling site
    • Adjusted to minimize excess in high-value peptide projects

    Downstream process integration

    • Delivered as hydrochloride salt during resin loading or segment condensation steps
    • Neutralized post-coupling during final purification to ensure finished peptide quality

    Final product types

    • Therapeutic peptides with constrained or cyclic structures
    • Peptidomimetic drug candidates for oncology, metabolic diseases, and infectious disease

    3. Specialty Chemical Synthesis for Agrochemical Manufacturing

    Agrochemical producers utilize this compound as a precursor in the synthesis of active substances such as fungicides and insecticides, especially those containing piperazine rings. Its dihydrochloride form grants stability and efficient handling in large-scale batch operations, where it participates in multistep reactions such as amide bond formation or heterocycle construction under tightly monitored conditions. Material identity and purity must be verified each batch to avoid off-target transformation leading to residues in final products.

    Industry compliance standards

    • FAO/WHO Specifications for Agricultural Pesticides
    • REACH Regulation (EC) No 1907/2006 for industrial chemicals
    • ISO 9001:2015 for agrochemical raw materials
    • National regulations: US EPA pesticide registration, China GB pesticide manufacturing rules

    Typical usage ratio

    • Generally 1.0 molar equivalent per functionalized piperazine group in target molecule
    • Modified based on yields, route selectivity, and downstream purification requirements

    Downstream process integration

    • Fed into main reactor during condensation or ring-closing protocols
    • Monitored for complete reaction and residual salt removal before formulation stage

    Final product types

    • Piperazine-substituted pesticides, fungicides, and seed treatment actives
    • Intermediate key substances for formulation development

    4. Chiral Intermediate for Custom Fine Chemicals

    Manufacturers of custom fine chemicals select this compound to construct chiral heterocycles and specialty ligands for catalysis, polymer additives, and advanced electronics chemical sets. Its well-defined geometry supports enantioselective synthesis. Material is introduced into chiral pool routes, often reacting through amidation or alkylation in the presence of chiral auxiliaries or resolving agents under defined pH and solvent conditions. Quality control focuses on enantiomeric purity and residual chloride content to support strict end-use specifications.

    Industry compliance standards

    • ISO 9001:2015 for specialty chemical manufacturing
    • REACH compliance for advanced intermediates
    • RoHS 2011/65/EU for electronics-usable chemicals
    • Internal client batch-release protocols for chiral quality and impurity profiles

    Typical usage ratio

    • 0.95–1.05 molar equivalent per target chiral center
    • Precise ratio determined by process development studies for scale-up

    Downstream process integration

    • Participates in early or mid-stage heterocyclic assembly with close process monitoring
    • Intermediates processed for subsequent functionalization or cross-coupling reactions

    Final product types

    • Enantiomerically pure fine chemical building blocks
    • Advanced substance bases for electronic chemicals and high-performance catalysts
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    More Introduction

    Piperazine-2-Carboxylic Acid Dihydrochloride – Direct from the Production Line

    Bringing Piperazine Derivatives Closer to Innovation

    Our work with Piperazine-2-Carboxylic Acid Dihydrochloride traces back to collaboration with both academic and commercial partners aiming at precision synthesis in pharmaceuticals, chiral auxiliaries, and advanced organic materials. As chemical manufacturers, we have handled every batch ourselves, transforming raw feedstock into high-purity crystalline powders that chemists and process engineers understand and trust. This compound, known in the lab as a reliable building block, stands out among piperazine derivatives for its balanced reactivity and stability in complex reactions.

    Model, Purity, and Specifications – What Matters Most

    Every specification we publish for our Piperazine-2-Carboxylic Acid Dihydrochloride reflects experience on our shop floor and in the lab. The compound often forms as a fine, white to off-white powder, usually at a purity above 98%. Through repeated fractional crystallization and careful HPLC monitoring, we control residual solvents and trace contaminants below the limits that synthetic chemists expect for downstream coupling, protection, and condensation steps. We guarantee batch consistency in melting point and pH, attributes that save hours for formulation chemists during product scale-up.

    Understanding Why This Molecule Counts

    Unlike many standard piperazine salts, Piperazine-2-Carboxylic Acid Dihydrochloride carries a carboxylic group positioned for straightforward activation or transformation in medicinal chemistry. This functional group, paired with the hydrochloride form, ensures water solubility and practical handling. Having worked with hundreds of heterocyclic building blocks, we see the demand for this derivative rising with new trends in peptide conjugate research and next-generation antivirals. Process chemists repeatedly rely on its reactivity for coupling with amines, esters, and activated carbonyls. Every gram passes practical scrutiny, from batch crystallization right through to tableting and further derivatization.

    How It Differs from Other Piperazine Products on the Market

    The conversation about piperazine salts usually starts with basic hydrochlorides or dihydrochlorides lacking carboxylic function. Piperazine-2-Carboxylic Acid Dihydrochloride gives medicinal chemists much more flexibility. With years of feedback from process development teams, we’ve discovered that this compound’s additional carboxylic site cuts out steps in peptide mimetic synthesis. Unlike plain piperazine dihydrochloride, it avoids the need for harsh carboxylation or protection chemistries, reducing yield loss and batch variability. It integrates into amino acid sequences and helps create rigid analogues in targeted drug scaffolds.

    The hydrochloride salt form also addresses a recurring pain point in scale-up—moisture stability and predictable dissolution. Piperazine-2-Carboxylic Acid, when not isolated as the dihydrochloride, tends to remain more hygroscopic and difficult to store. Experience teaches that switching to the dihydrochloride avoids degradation during long-term storage, ensuring product remains within specification for months. Our production reflects that insight, maintaining controlled humidity during packaging and storage, and building trust through reliable re-testing at customer sites.

    Applications Rooted in Real Projects

    Beyond chemistry texts, the real impact of Piperazine-2-Carboxylic Acid Dihydrochloride emerges at the benchtop and reactor. Many clients send feedback from peptide laboratories, reporting this product as a key intermediate for synthesis of N-protected piperazine units. It offers clean conversion into acid chlorides or amides and provides a straightforward bridge into more complicated heterocyclic systems for CNS drug discovery.

    Process engineers aiming at kilogram scales often discuss their preference for this compound in routes designed for GMP scale-up. Its dihydrochloride form allows straightforward aqueous workups and crystalline isolation, which in practice keeps impurities in check and takes pressure off purification by column chromatography. We've seen production timelines cut, and cost-per-batch decrease, simply from integrating this reliable intermediate.

    In our own contract manufacturing experience, research teams often use this molecule as a starting point for chiral synthesis—preparing asymmetric derivatives by coupling with protected amino acids or special aldehydes. This approach speeds up complex project timelines, especially with the carboxylic acid group preinstalled at the piperazine ring, sidestepping many tedious protection and deprotection cycles.

    Quality, Documentation, and Traceability – From Batch to Benchwork

    Direct manufacturers encounter every step—from raw material intake, conversion reactions, intermediate isolations, and final crystallization—all under one roof. For us, quality isn’t a matter of paperwork; it comes from daily execution and results seen right at the benchtop. Every certificate of analysis reflects batch-specific HPLC, NMR, and water content data. Our chemists take pride in resolving ambiguous spectral features, often calling customers to troubleshoot any unusual findings or adapt purification steps for bespoke research needs.

    Regulatory trends, especially in pharmaceutical research, require robust documentation. We build traceability from raw material origin to final shipment, archiving route-of-synthesis details and stability data for every batch. Our experience with regulatory audits helps us anticipate new compliance demands. Academic collaborations often request analytical standards alongside bulk material, and we supply spectral libraries and batch documentation for full transparency. In real projects, this level of documentation has prevented costly delays during technology transfer and final scale-up.

    Challenges in Production and How We Address Them

    Piperazine-2-Carboxylic Acid Dihydrochloride presents a real-world challenge in process optimization. The reaction pathway must avoid over-alkylation and undesirable ring-opened byproducts, both of which compromise downstream purity. Based on trials and pilot plant troubleshooting, we maintain strict control of temperature, pH, and reagent equivalents. Our chemists invest time in monitoring every stage directly: TLC, LC-MS, and batch titrations act as our eyes during synthesis.

    Moisture control in the final isolation stage is another real concern. Uncontrolled humidity can increase the difficulty of drying and extend post-reaction processing times. Thanks to feedback from continuous plant operation, we've improved our drying and isolation procedures, including staged vacuum drying and in-process Karl Fischer checks. This hands-on approach means our powder stays crisp, flows well in downstream processing, and delivers on assay requirements for pharmaceutical and discovery-grade lots.

    Environmental Impact and Responsible Manufacturing

    Efficient manufacturing today balances yield, resource use, and waste minimization. Every batch of Piperazine-2-Carboxylic Acid Dihydrochloride leaves a record of energy inputs, solvent recovery, and water use. Through continual process review, we have reduced the frequency of solvent swaps and optimized reaction sequences to reclaim over 40% of organic solvents in typical runs.

    We recycle aqueous mother liquors when feasible, enable solvent distillation in closed loop systems, and design our synthetic route to minimize generation of corrosive byproducts. Our team works closely with environmental personnel to review waste streams and batch records, learning from each production campaign. Many chemists appreciate this integration of sustainability—from solvent selection through to final packaging, where we have shifted toward more recyclable, low-weight materials whenever possible.

    Supporting Real-World Research and Scale-Up

    Having supplied Piperazine-2-Carboxylic Acid Dihydrochloride for projects ranging from small labs to major multinational scale-outs, we understand the unique pressures of both environments. Laboratory researchers often look for smaller, flexible batches, high-purity grades, and rapid turnaround. Production-scale customers focus on batch-to-batch reproducibility and long-term inventory support.

    We offer product customization based on actual project needs: bulk powder in varied mesh sizes or packaging under inert atmosphere for sensitive routes. Our open lines of communication with end-users allow direct feedback and process support. On several occasions, we’ve adjusted crystallization conditions or post-processing on request, sending test lots for trial before full-scale campaigns. This real feedback loop, forged across many years and customers, refines our product every batch.

    In the Context of Innovation and Discovery

    The pace of discovery in medicinal chemistry pushes demand for reliable, versatile intermediates. Piperazine-2-Carboxylic Acid Dihydrochloride answers this need, rooting itself as a preferred starting point for peptidomimetics, CNS-active lead compounds, and next-generation anti-infectives. Our on-site technical support staff—each accustomed to real bench chemistry—offer insight and troubleshooting for researchers exploring new synthetic pathways.

    In our work, we’ve noticed that novel research frequently branches out from core scaffolds like this piperazine carboxylic acid. The hydrochloride salt opens possibilities in aqueous-phase chemistry, making it easier for researchers to move away from chlorinated or high-boiling solvents. These features help speed up route development and reduce rework for process engineers facing tight deadlines.

    Product Consistency Through Every Stage

    Many downstream users value physical consistency as much as chemical purity. We document every parameter—particle size, flowability, bulk density—to predict process performance in tableting, granulation, and solid-dosage formulation. From first production to final shipment, we receive ongoing feedback which drives continual improvement.

    Long-term clients tell us that predictable appearance and handleability translate to lower downtime and less technical troubleshooting on their own lines. Chemists at customer sites often work directly with our lab staff to solve appearance-related questions or adjust particle size distribution. Shared commitment to practical usability shapes not just documentation, but every aspect of our production.

    Safety, Handling, and Transport Experience

    Preparing and shipping a high-quality chemical intermediate involves much more than filling containers. We understand the need to align with specific regulatory documentation, including transport under ADR or IATA rules for bulk or sample shipments. During preparation, our operators and lab managers work to mitigate cross-contamination risks, using segregated equipment and verified cleaning cycles for every lot changeover.

    Careful labeling with clear batch identification comes standard, following not just global regulations but also lessons learned from delayed imports or customs holdups. By organizing batch-wise documentation and anticipating questions before they arise from border officials or contract auditors, we have kept project timelines intact for researchers worldwide.

    Partnerships and Continuous Improvement

    Our approach to Piperazine-2-Carboxylic Acid Dihydrochloride production reflects a long cycle of feedback, process refinement, and open exchange with those at the front line of research. As a manufacturer, we see chemists as partners rather than just customers. Our doors stay open to customizations, advice, and transparent info sharing. This dialogue with industry and academic labs often pushes us to adapt new analytical techniques, tweak purification stages, or develop innovative packaging.

    Through candid conversations about setbacks, near-misses, or unexpected results, we strengthen not just this single product but our broader platform of piperazine derivatives. Over time, this commitment has led to increased project success for research groups who need stable, high-purity intermediates to meet their ambitious goals.

    Looking Forward

    Chemicals like Piperazine-2-Carboxylic Acid Dihydrochloride don’t reach the shelves by accident—they reflect years of development, scale-up, and adaptations based on needs in the field. We remain focused on delivering real value through transparency, quality assurance, and responsiveness. Our ongoing commitment to green chemistry and regulatory compliance ensures that these efforts support not just innovative research but a responsible, sustainable industry future.

    The next time you scan product listings or navigate contract chemistry bottlenecks, think of what that simple crystalline powder represents—direct human effort, technical ingenuity, and thousands of hours spent building reliability into every shipment. That philosophy shapes each lot of Piperazine-2-Carboxylic Acid Dihydrochloride we produce and deliver, batch after batch.