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Professional supplier of high-purity APIs, Intermediates, Small Molecule Inhibitors, and Research Chemicals. Committed to quality, reliability, and innovation for pharmaceutical and biotech research.
ChemBest, a division of Chemleader Biomedical Co., Ltd., is a professional research-based supplier and manufacturer of Active Pharmaceutical Ingredients (APIs), Pharmaceutical Intermediates, Drug Impurities & Metabolites, Natural Products, and Novel Life Science Reagents. With over 15 years of industry experience, we are committed to delivering high-quality products and exceptional service to meet the evolving needs of the pharmaceutical, biopharma, and life science research sectors.
Our mission is to be a reliable and trustworthy partner in scientific advancement by providing innovative building blocks and research chemicals ranging from milligrams to kilograms in scale. We serve laboratories, academic institutions, and pharmaceutical companies worldwide with precision, speed, and integrity.
Learn More About Us
Trusted expertise in small molecule synthesis and pharmaceutical chemistry.
Each product includes CoA with NMR, HPLC, MS, and IR data.
On-time global shipping from milligrams to kilograms.
Dedicated support team for seamless collaboration.
Discover our high-purity research chemicals and biochemicals, ideal for drug discovery, life science research, and pharmaceutical development.
High-purity cofactor for enzymatic assays and redox studies.
CAS: Available on request
Active metabolite of Irinotecan; topoisomerase I inhibitor.
Purity: ≥98%
Broad-spectrum tetracycline antibiotic for research use.
Grade: Research
Androgen biosynthesis inhibitor used in prostate cancer research.
Purity: ≥99%
Antiviral nucleotide analog for virology research.
Form: Powder
Tyrosine kinase inhibitor for fibrosis and oncology research.
Purity: ≥98%
Solubility enhancer for poorly water-soluble drugs.
Grade: Pharmaceutical
Cofactor for aromatic amino acid hydroxylases.
Purity: ≥97%ChemBest offers tailored synthesis solutions for small molecules, drug impurities, pharmaceutical intermediates, and custom peptides. Our experienced chemists support projects across the pharmaceutical, life science, and fine chemical industries.
At ChemBest, product quality is our top priority. Every batch is rigorously tested and comes with a comprehensive Certificate of Analysis (CoA) including:
Nuclear Magnetic Resonance
High-Performance Liquid Chromatography
Mass Spectrometry
Infrared Spectroscopy
For inquiries, quotes, or technical support, visit our official website to get in touch with our team.
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