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.

• 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 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.

• 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.