About ChemWhat

ChemWhat is a database of chemicals & biologicals with the concept “Precision, Completeness, Efficiency”. Since the launch in early 2019, ChemWhat has become a key chemical information resource for scientists, students, and the general public. Each month our websites provide data to several million users worldwide. ChemWhat mostly contains small molecules, but also larger molecules such as nucleotides, carbohydrates, lipids, peptides, and chemically-modified macromolecules. We collect information on chemical structures, identification, chemical and physical properties, biological activities, route of synthesis (ROS), spectrums, patents, health, safety, toxicity data, storage, transportation, usage, market price and many others. ChemWhat has launched 21 language sites, including English, German, French, Spanish, Portuguese, Italian, Polish, Russian, Ukrainian, Hindi, Urdu, Bengali, Arabic, Persian, Hebrew, Turkish, Korean, Indonesian, Japanese, Traditional Chinese and Simplified Chinese. The amount of data and support languages in ChemWhat is ever-growing. At the same time, ChemWhat handles tens of thousands of requests from universities and research institutions worldwide for authorized use of specific information on chemicals and biologicals every day.

In the first half of 2024, ChemWhat.AI was officially launched. By leveraging advanced artificial intelligence and ChemWhat high-quality database, ChemWhat.AI provides researchers with highly accurate and relevant data tailored to their specific needs. This precision ensures that researchers can trust the information they retrieve, minimizing errors and enhancing the reliability of their work. The platform’s comprehensive approach integrates data from a wide array of sources, including scientific journals, ChemWhat databases, and paid repositories. This completeness allows researchers to conduct thorough searches without the need to navigate multiple platforms, saving valuable time and effort. ChemWhat.AI extensive data coverage ensures that researchers have access to the most relevant and up-to-date information, facilitating more informed decision-making and innovative discoveries. Efficiency is at the core of ChemWhat.AI’s design. The platform streamlines the information retrieval process, utilizing sophisticated search algorithms and intuitive interfaces to provide quick and easy access to crucial data. This efficiency not only accelerates the research process but also enhances productivity, allowing researchers to focus more on analysis and experimentation rather than data collection. Through its commitment to precision, completeness, and efficiency, ChemWhat.AI is transforming the landscape of chemical and biological information retrieval, empowering researchers to achieve greater accuracy and innovation in their work. The landscape of chemical and biological research is fraught with challenges, from navigating the vast seas of information overload to the prohibitive costs of accessing high-quality databases. However, ChemWhat.AI is poised to transform this field with its commitment to precision, completeness, and efficiency. By leveraging advanced AI technology, ChemWhat offers researchers a powerful tool to streamline their search processes and elevate the quality of their work. As we look to the future of research, tools like ChemWhat.AI will be instrumental in overcoming the complex information barriers that currently impede scientific progress. By integrating these innovative solutions, researchers can focus on deeper analysis and groundbreaking discoveries, ultimately advancing our understanding of chemistry and biology.

In the realm of chemical and biological raw materials, ChemWhat is dedicated to providing “luxury goods” for scientific research. These materials, characterized by extremely high purity, unique manufacturing processes, superior research applications, and impeccable customer experiences, have become the sought-after goals of researchers. These raw materials not only drive scientific progress but also provide reliable tools for researchers worldwide, enabling them to continually make breakthroughs and achieve remarkable accomplishments in their fields. Just as luxury goods bring luxury and enjoyment to life, top-tier raw materials bring precision and success to scientific research.

ChemWhat offers metal catalytic materials such as tungsten and chromium carbonyls with a purity of 99.9999% (6N) or higher, making them the luxuries of the chemical world. These high-purity materials not only meet the stringent precision manufacturing requirements of the semiconductor industry but also drive continuous technological advancement. Just as luxury products rely on top-grade raw materials, these materials depend on the highest purity levels to ensure their superior performance.

In the field of in vitro diagnostic materials, ChemWhat controls the levels of metals such as copper and iron in certain materials to the ppb (parts per billion) level, demonstrating an astounding level of precision. This extreme purity control requires highly advanced technology and equipment. These materials not only consume significant resources and time during production but also stand out for their rarity and value.

ChemWhat Reagents

ChemWhat is a niche brand of reagents, focusing on developing high-quality products including:

  • Pharmaceutical Impurity Reference Standards
  • Recombinant Proteins
  • Antibodies/Antigens
  • Immunodiagnostic Products

And also cover small part of other classes:

  • Chemical Reagent: Amino Acids, Building Blocks, Catalysts and Ligands, Carbohydrates, Metal Compounds And Auxiliaries, Flavors And Fragrances, Inorganic Compounds
  • Biochemical Reagent: Cell Culture Buffers, Liposomes, Coenzymes, Nucleosides and Nucleotides
  • Cell Culture and Analysis Reagent: Cell Culture Media, Albumin And Transporters, Growth Factors And Cytokines, Hormones, Vitamins
  • Molecular Biology and Functions Genomics Reagent: Customized Peptides, DNA And RNA Oligonucleotides and Probes, PCR Reagents
  • Protein Biology Reagent: Proteins and Enzymes, Antibodies, Biologically Active Small Molecules
  • Materials Science Reagent: Biomedical Materials, Carbon Nanomaterials, Liquid Crystal Materials, OLED And PLED Materials, OFET And OPV Materials, Organic Silicon Materials, Battery Materials, Solar Materials

You may order our reagent from ChemWhat directly or contact our global distributors.

Customers Globally

  • Universities : Cornell University, Harvard University, National University of Singapore, The University of Auckland, The University of Melbourne, University College London, University of Birmingham, University of Geneva, University of Groningen, University of Leuven, University of Texas, University of Toronto, Universität zu Berlin, Johns Hopkins University, Monash University, University of Pennsylvania, The University of Liverpool, Eidgenössische Technische Hochschule Zürich, University of Erlangen-Nuremberg, Ulsan National Institute of Science & Technology, The University of Hong Kong, Yamagata University, IMU University, Chiang mai University, Université de Montpellier, AGH University, Seoul National University, University of Cambridge…
  • Government and R&D institutions : CERN – Conseil Européenn pour la Recherche Nucléaire, CEA – Commissariat à l´énergie atomique et aux énergies alternatives, EDQM – European Directorate for the Quality of Medicines, ISRO – Indian Space Research Organization, LGC – Laboratory of the Government Chemist, MKEK – Mechanical and Chemical Industry Company, Scion – New Zealand Forest Research Institute Limited, TUBITAK – The Scientific and Technological Research Council of Turkey, USP – The United States Pharmacopeia Convention, The Commonwealth Scientific and Industrial Research Organisation, Forschungszentrum Jülich…
  • Pharmaceutical companies : AstraZeneca, GSK, Merck, Pfizer, Sanofi…
  • Gene companies : Illumina ;
  • Reagent companies : Alfa Aesar, Apollo Scientific, Sigma-Aldrich, TCI…
  • Companies for cosmetics and personal care : Coty, Estee Lauder, Firmenich, P&G, Symrise…
  • Companies for Advanced Materials : Sheldahl, Skeleton Technologies, Heliatek…
  • Other customers : Ballance Agri-Nutrients Ltd., BASF, EURENCO, Fujitsu, GE, Protex International, Samsung, SEKISUI, Siemens, Solvias AG, Saturn PJSC (Saturn Public Joint Stock Company), Sony, SIBUR, Siegwerk Switzerland AG, tesa SE and Ve-Ge Hassas Kağıt ve Yapıştırıcı Bant San. ve Tic. A.Ş, AGC, Hitachi…

Bulk Materials

  • Dental Materials: ChemWhat has established itself as the global leading supplier of dental materials including 10-Methacryloyloxydecyl dihydrogen phosphate (10-MDP, ChemWhat Code: 1211298, CAS: 85590-00-7) with variations in grade and performance to accommodate diverse customer formulations while enhancing the adhesive’s stability, bonding strength, and compatibility with other components, powder-form 4-Methacryloxyethyl trimellitic anhydride (4-META, ChemWhat Code: 1104866, CAS: 70293-55-9), Bis(Glyceryl Dimethacrylate)Phosphate (Bis-GDMAP, ChemWhat Code: 1411518, CAS: 168191-79-5) and UDMA Alternatives.
  • Diagnostic Materials: ChemWhat’s Phosphoenolpyruvate Monopotassium Salt (PEP-K, ChemWhat®38422, CAS: 4265-07-0) for metabolic research, Phosphoenolpyruvate Monocyclohexylammonium Salt (PEP-CHA, ChemWhat®38345, CAS: 10526-80-4) for biochemical studies, Ferene Disodium Salt (Ferene, ChemWhat®25976, CAS: 79551-14-7) for precision metal ion detection and other Diagnostic Materials address a pervasive challenge encountered by researchers within biochemistry and analytical chemistry: even when sourcing compounds with comparable labelled chemical purity from numerous suppliers, end-users frequently observe dramatic disparities in experimental performance. Most chemical vendors rely solely on chemical purity as the core evaluation indicator, yet the success or failure of biochemical assays hinges largely on overlooked non-standard specifications. Trace structurally similar by-products may function as competitive enzyme inhibitors and distort kinetic parameters; residual trace metal ions such as Cu²⁺, Fe³⁺ and Zn²⁺ introduce background noise, triggering false positive results or enzyme deactivation. Driven by the commitment to deliver experimental certainty, ChemWhat products are trusted by preeminent global research institutions including Harvard University, Cornell University, the University of Cambridge, ETH Zurich, the National University of Singapore and Seoul National University. For research teams worldwide, selecting ChemWhat means adopting highly standardised, reproducible experimental systems. Beyond pure chemical substances, ChemWhat delivers reliable experimental certainty; amid fiercely competitive research environments where timeline efficiency is critical, investing in high-performance biochemical materials remains the most cost-effective strategy to boost experimental success rates.
  • Photofunctional Additives: Representative products include ChemWhat®1499437, CAS: 1877301-52-4, which redefines performance benchmarks for high-end red-shifted light absorbers with a steep 390 nm cut-off and outstanding thermal stability up to 280°C. Additionally, LAP, CAS: 85073-19-4 supplied by ChemWhat sustains purity above 99.5%, noticeably exceeding the industry typical range of 95%–98%. Supported by large-scale manufacturing capacity, ChemWhat guarantees long-term stable inventory and expedited delivery. Leveraging economies of scale, ChemWhat lowers unit costs without any sacrifice to product purity and provides complimentary samples for eligible new and existing customers, enabling clients to verify batch consistency and practical curing performance within their own experimental setups prior to formal orders.
  • IVD (In Vitro Diagnostic) Materials: Such as Sulfo-TAG NHS-Ester, ChemWhat Code: 1491248, CAS: 482618-42-8. Leveraging its UK-based research and production facilities operated in strict accordance with global standardized quality control systems, ChemWhat guarantees that every batch of Sulfo-TAG NHS-Ester complies with the highest international criteria for purity, reactivity and stability. Specifically, the company adopts optimized synthetic routes paired with HPLC verification to secure a product purity of no less than 95%, implements rigorous regulation of reaction parameters and lyophilization processes to sustain stable and consistent product performance across all production batches, and conducts all manufacturing procedures in full compliance with ISO standards and EU chemical management regulations including REACH, rendering the product applicable to life science applications worldwide. Thanks to this comprehensive and systematic production and quality control strategy, ChemWhat has successfully upgraded Sulfo-TAG NHS-Ester from a laboratory-only reagent into a commercially scalable, globally recognized high-end biochemical product with stable and standardized quality.
  • Industrial Additives: Such as PDHP, 3,5-Diethyl-1,2-dihydro-1-phenyl-2-propylpyridine, ChemWhat Code: 8503, CAS: 34562-31-7. In industries like rubber manufacturing, the color of additives can significantly affect the final product. A consistent, light yellow PDHP ensures that it does not alter the intended color of the rubber, which is especially important for products where visual appearance is a key quality factor. ChemWhat’s precise control over the appearance of PDHP is achieved through advanced manufacturing processes that focus on the careful management of reaction conditions and purification steps to produce a consistently colored product. ChemWhat’s meticulous approach to controlling the color of PDHP ensures that their customers can confidently use the compound without worrying about it affecting the visual attributes of their final products. This level of quality control not only reflects ChemWhat’s expertise but also their understanding of the specific needs of their clients.

Custom Services

In addition to standard reagent products, ChemWhat also offers custom manufacturing and industrial production services in the following areas:

  • Custom Nano-Metal Material Services: Leveraging an industry-leading technical framework in the fields of nano-silver and nano-copper materials, ChemWhat provides comprehensive custom manufacturing services. ChemWhat’s nano-silver product line features:
    1. A diverse range of particle size specifications for silver nanoparticles (10-200nm);
    2. High aspect ratio silver nanowires (aspect ratio > 100);
    3. Cost-optimized copper-coated silver composite powders;
    4. Functionalized silver powders tailored to specific application requirements.
    These products deliver exceptional electrical conductivity. More importantly, ChemWhat has mastered critical surface functionalization technologies, enabling precise performance tuning tailored precisely to clients’ specific application scenarios.
  • Custom Conductive Circuit & Shielding Pastes: ChemWhat’s low-temperature silver paste cures at just 80–90°C, survives 5,000+ abrasion cycles, and holds 4B adhesion after 1,000+ hours of 85°C/85% RH aging. For FPC boards and touch sensors, screen printing reaches 60-micron lines, and laser etching pushes below 30 microns. A dedicated stretchable silver paste withstands 2,000+ cycles at 30% elongation, keeping wearable electrodes and roof-glass heating circuits intact under repeated flexing. The portfolio extends further — solderable low-temperature paste, low-temperature sintered antenna paste, nanoimprint and PEDOT:PSS transparent conductive ink for transparent antennas and touch electrodes, plus termination pastes for capacitors, resistors, and inductors — 18 product categories in total, spanning consumer, automotive, medical, and IoT electronics. On the shielding side, ChemWhat’s silver, silver-aluminum, silver-copper, and nickel-carbon shielding pastes spray directly onto housing interiors, delivering up to 110 dB of shielding across 0.3–20 GHz. For seams needing both sealing and conductivity, silicone-core conductive gaskets and elastomeric connectors operate from –55°C to 160°C and survive 25,000 compression cycles without cracking. FIP nickel-carbon gasket adhesive extends shielding into tighter, more intricate spaces. Behind this performance are two proprietary technologies — flexible printing for micron-scale patterning, and elastic shielding for durability under repeated deformation.
  • Custom High-Performance Conductive Encapsulating Adhesive: ChemWhat’s answer is a family of differently formulated conductive adhesives, silver pastes, and copper pastes matched to each application: a single-component epoxy silver adhesive for low-to-medium-power LEDs and consumer ICs, low-cure and warp-free; a modified-polyurethane LCM adhesive for displays, with minimal bleed-through and proven corrosion resistance. The harder problem is high-power devices — GaN RF chips, SiC power devices, EV IGBT modules — where heat flux overwhelms ordinary adhesives. ChemWhat’s pressureless and pressure-assisted silver sintering pastes solve this: resin-free, sintering into a dense silver layer with thermal conductivity above 260 W/m·K, curing as low as 160–200°C, with sub-3% porosity even on larger chips. For EV drive systems and charging infrastructure, ChemWhat’s sintered copper paste enables an all-copper interconnect that avoids CTE-mismatch cracking, extends thermal-cycling life 3–5x, and costs less than silver at volume.
  • Custom Non-Natural Protected Amino Acids: Unlike conventional protected amino acid custom services, ChemWhat specializes in delivering products tailored for the pharmaceutical sector that demand exceptionally stringent purity and trace impurity profiles.
    1. Ultra-High Purity: Achieving purity levels exceeding 99.5%;
    2. Strict Impurity Control: Maximum individual impurity content strictly controlled to under 0.1%.
    These products fully comply with the rigorous manufacturing standards of various therapeutic drugs, effectively minimizing adverse reactions caused by trace impurities and preserving maximum drug efficacy.
  • Peptide Synthesis: We are experienced in the synthesis of high quality peptides with various modifications. With over 200 units of analytical and preparative HPLC, we can provide peptides from small scale (mgs) to large scale (kgs) in very fast delivery: Simple to complex and Linear to cyclized; Long sequences peptide up to 140 mer; From small to large scale; Different purity level (desalted, >75%, >85%, >90%, >95%, >98% and even above 99%); Widest variety of modifications (from biotinylation to phosphorylation, to dye labeling, and much more…); Peptides – Protein Bioconjugation; Purification at different scales; Highest success rate in the industry.

Other Services

  • Sourcing Service: With branches and partners globally and deep understanding of related industry, ChemWhat can source products for our clients with high efficiency and professionalism.
  • Listed as a bulk supplier or reagent company under specific product pages: Different from many B-to-B websites, ChemWhat highly respects privacy and never uses internal inquiry system to collect information sent to our clients. Instead, all inquiries will be sent to our clients directly without any data collected by ChemWhat.
  • Banner Advertisement: We help our clients promote their most important products or services by using banner advertisement. The banner will show in all product pages written in 21 languages and can cover potential customers in short time.
  • Credibility Consulting: We have a complete set of internal mechanisms to evaluate the credibility of suppliers and offer paid report of companies in chemical and biochemical industry. Besides, ChemWhat will keep listing untrustworthy companies and persons in a prominent position in our website to remind all visitors when involving business with these entities.
  • Legal Consulting: ChemWhat has long-term cooperated law firms in Europe, US, China, and south America and can handle legal affairs in our area.
    Data analysis is at the very core of our service. Our chemical industry leading scoring system includes key statistical metrics and the most advanced statistical techniques to help determine the financial stability of a company. With this scoring model, we can achieve a prediction rate of 70% of company insolvencies 12 months in advance, saving you the financial worry that bad debt can bring. In fact, our company credit scores and limits are so predictive that all leading credit insurers endorse them. If you are looking at a potential merger, takeover or tendering process, or simply want to see a more in-depth view of the company you are about to do business with; we endeavour to fill our reports with the insight you need.
  • Custom High-End PEG Linker Services: ChemWhat’s PEG linker series is specifically engineered for high-end drug development scenarios. All products meet a purity standard of over 95%, ensuring batch-to-batch consistency and stability in clinical trials and commercial manufacturing. Whether utilized for cleavable linker systems (such as enzyme-sensitive, pH-sensitive, or reduction-sensitive types) or non-cleavable linker platforms, ChemWhat’s product line delivers exceptional reproducibility, biocompatibility, and process stability, fully complying with the stringent quality control requirements of major international pharmaceutical companies. ChemWhat’s advantages lie not only in product purity, but also in robust custom synthesis capabilities. The company’s R&D team possesses profound expertise in polymer synthesis, conjugation technologies, and sustained-release systems, enabling the delivery of diverse structural types of PEG linkers tailored to client specifications, including but not limited to:
    1. Mono-arm, dual-arm, and multi-arm PEGs;
    2. Heterobifunctional PEG linkers (such as NHS-PEG-MAL);
    3. Controllable-release linkers, including acid-sensitive, enzyme-sensitive, and reduction-sensitive variants;
    4. Drug carrier linker structures with adjustable hydrophobic/hydrophilic ratios.
  • Recombinant Proteins Development: We have rich experience in enzyme resource exploration, optimization, and transformation. It can explore new enzyme sources from huge enzyme resources and optimize and transform the most suitable enzyme molecules. Through the establishment of extensive and in-depth cooperation with the professional enzyme engineering research teams of many famous universities, ChemWhat can grasp the frontier of enzyme engineering in time and quickly transform into the advanced technology of the company. ChemWhat can perform important enzyme functions such as enzyme activity, stability, substrate specificity, optimum pH, and organic solvent resistance. By rational design, new enzyme resources with greatly improved performance are quickly obtained to meet the application requirements of the target enzyme in different fields such as diagnosis, medicine, energy, washing and papermaking.