About Us

CSBio is a leading peptide and instrumentation manufacturing company located on the edge of Silicon Valley in Menlo Park, California. Since 1993, CSBio has been providing high quality custom peptides, cGMP peptides and automated peptide synthesizers to the global biotech community. Our peptide products and instrumentation can be found in production laboratories and pharmaceutical companies worldwide.

Our state of the art cGMP manufacturing facility provides cGMP peptides for preclinical and clinical programs and our commercialization and regulatory teams can take you from toxicology studies through market commercialization. CSBio has recently received a Recommendation For Approval from the USFDA following an extensive USFDA PAI audit. Our Quality and Regulatory teams can assist our clients in every step of the clinical study and commercialization processes. We are committed to helping our clients reach the ultimate goal of FDA approval and subsequent commercialization.

CSBio’s peptide product line also includes a complete list of generic peptide APIs including the most widely used peptide APIs in the industry. CSBio now also offers solid phase peptide synthesis resins as well as high quality Fmoc and Boc protected amino acids for use in both non-clinical and cGMP peptide manufacturing. Whatever your peptide requirements, CSBio can assist you in reaching your ultimate goals by offering high quality products and world class support.

CSBio's instrumentation product line includes a full range of peptide synthesizers, DNA/RNA oligonucleotide synthesizers for pilot and process scale, and column packer and columns for preparative HPLC purification.

Our Services


Peptides from non-clinical to commercial scale

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Portfolio of instruments that include peptide synthesizers, DNA synthesizers, and LC purification

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Extraordinary chemistry in long-term relationships

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About Us

CSBio is a leading peptide and peptide synthesizer manufacturing company located on the edge of Silicon Valley in Menlo Park, California. Since 1993.

Our Contacts

20 Kelly Court
Menlo Park, CA 94025

(+650) 322 1111

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