ChemWhat English

As a globally registered trademark of Watson, ChemWhat has established itself as a rising international leader in the field of ultra-high-purity inorganic reagents. Known for its unwavering commitment to quality, ChemWhat has become a trusted brand among researchers and industries worldwide. Its product line—spanning rare earth halides, other metal halides, and metal chalcogenides—has been widely adopted in cutting-edge applications such as scintillation crystals, optical fiber manufacturing, perovskite materials, and solid-state electrolytes, powering the next generation of technologies across a wide range of sectors.

As a globally registered trademark of Watson, ChemWhat has established itself as a rising international leader in the field of ultra-high-purity inorganic reagents. Known for its unwavering commitment to quality, ChemWhat has become a trusted brand among researchers and industries worldwide. Its product line—spanning rare earth halides, other metal halides, and metal chalcogenides—has been widely adopted in cutting-edge applications such as scintillation crystals, optical fiber manufacturing, perovskite materials, and solid-state electrolytes, powering the next generation of technologies across a wide range of sectors. ChemWhat offers products with a wide spectrum of certified purities, ranging from 3N (99.9%) to 7N (99.99999%) and beyond, meeting the diverse needs of everything from laboratory-scale research to full industrial-scale production. The total metallic impurity content of several products is controlled to be below 100 ppm, while water and oxygen levels are kept under 50 p...

Semaglutide, a groundbreaking product in the GLP-1 drug class, owes its extended half-life and enhanced receptor affinity largely to its unique side chain, Ste-Glu-AEEA-AEEA-OSU (CAS: 1169630-40-3) . This side chain covalently modifies the peptide backbone, significantly improving pharmacokinetics and therapeutic performance. However, its complex structure presents two critical synthetic challenges: Precise Assembly of Repetitive AEEA Units: The side chain features consecutive AEEA (aminoethoxyethoxyacetic acid) units, which require stepwise coupling via highly activated intermediates (e.g., AEEA-AEEA). Any impurities or deviations compromise downstream reaction efficiency and may trigger irreversible byproducts. Stereochemistry and Stability of Glutamic Acid (Glu): The glutamic acid component must maintain strict L-configuration, and its carboxyl groups require directional protection (e.g., OtBu) to preserve biological activity. Leveraging deep expertise in peptide chemistry a...

As the industry continues to pursue more stable, effective, and targeted treatments, Watson International, the brand owner of ChemWhat®, has earned global recognition as a trusted manufacturer of high-purity polyethylene glycol (PEG) linkers—tailor-made to accelerate antibody-drug conjugates (ADC) development and commercialization.

In the realm of modern biopharmaceutical innovation, antibody-drug conjugates (ADCs) represent a promising frontier—one that combines the specificity of monoclonal antibodies with the potency of cytotoxic agents. At the core of this technology lies a critical component: the linker, which bridges the antibody and the drug payload. Among the various types of linkers, polyethylene glycol (PEG) linkers have gained widespread prominence due to their unique physicochemical properties and ability to improve the pharmacokinetic profile of therapeutics. As the industry continues to pursue more stable, effective, and targeted treatments, Watson International, the brand owner of ChemWhat®, has earned global recognition as a trusted manufacturer of high-purity PEG linkers—tailor-made to accelerate ADC development and commercialization. The Role of PEG Linkers in ADCs Polyethylene glycol (PEG) linkers serve several vital functions in the design of antibody-drug conjugates: Improved Solubility...

As a global leader in photoinitiator solutions, Watson—through its ChemWhat brand—offers a full product lineup in both radical and cationic systems. Backed by deep technical expertise and scenario-based development capabilities, ChemWhat continues to deliver high-value solutions to industries including electronics, printing, automotive, and healthcare, helping customers overcome technical bottlenecks and seize market opportunities.

In the rapidly evolving world of photocuring technology, photoinitiators play a pivotal role as core materials, directly influencing curing efficiency, material performance, and application boundaries. As a global leader in photoinitiator solutions, Watson—through its ChemWhat brand—offers a full product lineup in both radical and cationic systems. Backed by deep technical expertise and scenario-based development capabilities, ChemWhat continues to deliver high-value solutions to industries including electronics, printing, automotive, and healthcare, helping customers overcome technical bottlenecks and seize market opportunities. I. Comprehensive Product Portfolio – Radical and Cationic Systems to Meet Diverse Demands 1. Radical Photoinitiators: Speed and Versatility Combined ChemWhat’s radical photoinitiator series is known for its high efficiency, stability, and low yellowing, covering the full spectrum from short wavelengths (250 nm) to long wavelengths (405 nm), and is compatibl...

Starting from trichlorosilane and silicon tetrachloride, Watson has established a complete technological framework for the silane industry, forming a three-tier product system of “basic raw materials → functional monomers → application derivatives,” covering nine major functional categories.

I. Full-Chain Coverage: Building the “Periodic Table” of the Organosilicon Field Starting from trichlorosilane and silicon tetrachloride, Watson has established a complete technological framework for the silane industry, forming a three-tier product system of “basic raw materials → functional monomers → application derivatives,” covering nine major functional categories: Basic Layer : Hydrogen-containing silanes (such as trimethoxysilane) and silicon esters (such as tetraethoxysilane and ethyl polysilicate) lay the foundation for reactive activity. Functional Layer : Seven major product categories, including chloropropyl silanes, amino silanes, and vinyl silanes, achieve core functions such as interface modification and coupling enhancement. Application Layer : Composite products such as water-based waterproofing agents and silane polymers directly connect to end-use industrial applications. Production Chain Download Highlights of Technical Integrity : Vertical Depth : Indepe...

Chiral catalysis plays a crucial role in fine chemicals and pharmaceutical synthesis. As a technology pioneer in this field, Watson Chem leverages years of technical expertise and innovation to provide global clients with highly efficient and reliable chiral catalysts and catalysis development services, helping them seamlessly transition from laboratory research to industrial-scale production. Sadphos: A New Generation of Multi-Coordinated Adaptive Ligands Sadphos series represents a new frontier in chiral ligand design. These ligands feature a non-C2-symmetric architecture, offering a unique balance of rigidity and flexibility, and are capable of coordinating with a variety of metals, significantly broadening their catalytic applications. Sadphos ligands offer several key advantages: Stable Raw Material Supply : The required starting materials are primarily basic chemical products, ensuring a mature and stable supply chain for large-scale applications. Simple and Efficient S...

Acetylenic alcohols are gaining increasing importance across various industries due to their unique chemical properties and broad applicability. As specialized compounds containing both alkyne and hydroxyl functional groups, these molecules offer exceptional performance in reaction control, corrosion protection, and formulation enhancement. Their versatility and efficiency make them indispensable in high-performance industrial applications, modern chemical synthesis, and product development. Applications of Acetylenic Alcohols Acetylenic alcohols are widely utilized across multiple industries, including coatings and paints, precious metal catalyst inhibition, corrosion prevention, agrochemicals, pharmaceuticals, and aroma chemicals: 1. Coatings and Paint Additives Acetylenic alcohols enhance surface properties in coatings and paints by improving leveling, gloss, and anti-foaming characteristics. Their surfactant-like behavior optimizes wetting and adhesion, resulting in smoother fi...

In modern industrial applications, isooctanoates and neodecanoates are widely used across various industries due to their exceptional chemical stability and excellent solubility. These industries include resins, rubber catalysts, coatings and paint additives, driers, plastic heat stabilizers, and fuel combustion aids. As a leader in advanced chemical solutions, Watson has accumulated extensive technical expertise in these fields and continuously optimizes its production processes to provide high-quality products to global customers. Watson possesses strong technical expertise in synthesizing organometallic compounds of transition metals (cobalt, manganese, copper, zinc, iron, nickel, chromium, zirconium, bismuth), alkali metals (lithium, sodium, potassium, strontium, barium, calcium, magnesium), rare earth metals (scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium), and noble...

In modern industrial applications, isooctanoates and neodecanoates are widely used across various industries due to their exceptional chemical stability and excellent solubility. These industries include resins, rubber catalysts, coatings and paint additives, driers, plastic heat stabilizers, and fuel combustion aids. As a leader in advanced chemical solutions, Watson has accumulated extensive technical expertise in these fields and continuously optimizes its production processes to provide high-quality products to global customers. Core Applications of Isooctanoates and Neodecanoates Resin and Rubber Catalysts Isooctanoates and neodecanoates serve as highly efficient catalysts that facilitate polymerization reactions, increase reaction rates, and enhance the mechanical properties of the final products. For instance, in the synthesis of polyurethane resins and rubber materials, zinc, cobalt, and manganese isooctanoates or neodecanoates are commonly used as catalysts to ensure supe...