Welcome to KOI
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• ≥99% purity target • Third-party tested • COA per batch • Fast US shipping
01 · Custom synthesis
Protein expression, fermentation, labeled peptides, sequence modifications — mg to multi-gram scale.
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02 · Analytical
Extraction, lyophilization, stability studies, QC method development, and ISO-tested analytical work.
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03 · Wholesale
Catalog SKUs or custom sequences at scale. Lot-locked pricing and Net-30 for verified institutions.
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04 · Reference
1-letter and 3-letter codes for the 20 standard amino acids, plus common modifications used in synthesis.
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Create an AccountWelcome to KOI
Join our researcher list and we'll email your code right away.
• ≥99% purity target • Third-party tested • COA per batch • Fast US shipping