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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Featured Compounds
Every batch independently verified for purity and identity.
Every batch third-party tested. 99%+ purity verified. Same-day USA shipping. Certificate of Analysis included with every order.
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Our Catalog
Browse our complete collection of research-grade Optimized Peptides, filtered by area of study.
Research Library
Research & Science
LL-37 is the only cathelicidin antimicrobial peptide humans produce — a 37-amino-acid host-defense peptide that targets bacterial membranes, modulates the immune response, and serves as a template for engineered antimicrobial analogs studied in laboratory research.
Research & Science
Native hormones each bind one main receptor — yet investigational peptides such as tirzepatide hit two, and retatrutide hits three. We unpack how one chain of amino acids can engage several receptors at once, what tunes the per-receptor preference, and why this design space matters in research.
Peptide Education
Two peptide vials can look identical on the bench and behave completely differently in solvent. Dissolution is sequence chemistry, not a fixed recipe. This guide walks through the molecular logic of peptide solubility, when pure water suffices, when to reach for DMSO or fluorinated alcohols, how the isoelectric point governs precipitation, and the common laboratory mistakes that spoil a solubilization attempt.
Researchers' Picks
