Every batch third-party tested. 99%+ purity verified. Same-day USA shipping. Certificate of Analysis included with every order.
Laboratory Tool
Laboratory-use tool. Calculate the volume to aliquot for your in vitro research protocols. Enter the peptide mass, reconstitution solution volume, and target aliquot.
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A note from the founder
Optides started because we were tired of guessing. Vials without lab reports. Vendors who go dark mid-cycle. Marketing claims that don't match the molecule. We've all been there — and we knew researchers deserved better.
So we built the catalog we wanted to buy from. Every compound is tested by an independent third-party lab, with a real Certificate of Analysis you can read before you order. We ship from the US, fast and discreet. And if something's not right, you talk to a person — not a ticketing queue.
Thanks for being here. We don't take it for granted.
— The Optides Team
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Every batch third-party tested. 99%+ purity verified. Same-day USA shipping. Certificate of Analysis included with every order.
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Every batch independently verified for purity and identity.
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Our Catalog
Browse our complete collection of research-grade Optimized Peptides, filtered by area of study.
Research Library
Peptide Guides
Charge is one of the first things you need to know about a peptide, and a single number captures it: the isoelectric point. This guide explains what pI means, which parts of a peptide set it, how to calculate it by hand for a simple case, and how to find it for any real sequence using free tools.
Research & Science
Two peptides can share an identical sequence on paper yet behave nothing alike, because one is built left-handed and the other right-handed. This explainer walks through what D- and L-amino acid chirality is, why it decides how long a peptide survives enzymatic attack, how a mirror-image backbone resists proteases, and the design trade-offs researchers weigh when they reach for D-amino acids.
Research & Science
A short peptide cut from a protein usually won't hold its helical shape in solution. Stapled peptides solve this with a small covalent brace — a hydrocarbon staple — that locks the alpha-helix in place, making the peptide sturdier, more cell-permeable, and better at gripping its target in laboratory research.
