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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.
Researchers' Picks
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Our Catalog
Browse our complete collection of research-grade Optimized Peptides, filtered by area of study.
Research Library
Research & Science
Defensins are ancient antimicrobial peptides of innate immunity, sorted into three structural classes — alpha, beta and theta. The dividing line is disulfide connectivity: which of six conserved cysteines bond to which. Here is how the alpha/beta/theta split works, where each class is made, and why researchers keep studying them.
Research & Science
Substance P, neurokinin A and neurokinin B look like three separate messengers, but they belong to one family united by a single chemical ending. This explainer walks through the shared FxGLM motif, the three neurokinin receptors and their binding preferences, how the receptors switch on, and why this system is one of the most studied in neuropeptide research.
Research & Science
The 'thymic peptide family' is one of the most confusingly named groups in peptide research — a handful of structurally unrelated molecules that share a birthplace rather than a backbone. This research-focused explainer walks through the sequences of thymosin alpha 1, thymulin, and thymopoietin, and shows why understanding their structures is the key to reading the literature correctly.
