// CUSTOM

Beyond the catalog.

Two pathways for what we don't list. Source a peptide that exists in the cGMP world, or commission a sequence that doesn't. Both go through our partner network. Both come back within 24 hours.

Response < 72 hrs Compliance · RUO
// SOURCING

Source a peptide we don't list.

If the molecule exists in the cGMP world, our partner network can source it. We operate as insiders in the Chinese pharmaceutical ecosystem through our partnership with Youth: direct-to-manufacturer pricing, audited supply, indicative quotes returned within 24 hours.

USE CASES
Generic peptide APIs CAS-listed compounds Off-catalog research peptides Comparator molecules
// Selected · Sourcing
// SYNTHESIS

Synthesize a sequence that doesn't exist yet.

Custom peptide synthesis through our cGMP partner network. We commission bespoke sequences, modifications, and research-grade peptides for buyers who need a molecule the commercial market doesn't offer. Up to 99% purity verified through our 14-test COA program.

CAPABILITIES
Custom sequences PEGylation Disulfide bridges Fluorescent labels (FAM, FITC) Biotin / isotope labeling Unnatural amino acids Palmitoylation Modifications
// Selected · Synthesis
// SOURCING REQUEST

Tell us the molecule. We'll source it.

Common name, scientific name, or CAS number. We'll figure it out.

Required. What peptide should we source?
Pick one. We route to the right partner.

Rough estimate is fine. We use it to scope the right partner.

Helps us position the quote. Optional but strongly recommended.

We respond to your account email.

Enter a valid email so we can respond.
Required. Please acknowledge RUO.
// REQUEST RECEIVED · REF: SR-—

We'll respond within 24 hours.

Routed to the Youth partnership desk for sourcing assessment. You'll get availability, lead time, and indicative pricing at your account email.

// SYNTHESIS REQUEST

Tell us the sequence. We'll synthesize it.

One-letter or three-letter amino acid code. Modifications noted in standard format. We'll confirm the spec with you before quoting.

Required. Paste the sequence you need synthesized.

Toggle any that apply. Choose "Other" and note specifics in the research context below.

Pick a purity target.

Mass is fine. We'll convert to vial format if needed.

Required. What quantity should we quote?

Custom synthesis typically requires 4–12 weeks depending on length and modifications.

Optional. Point us to source literature if your sequence comes from a paper.

We respond to your account email.

Enter a valid email so we can respond.
Required. Please acknowledge RUO.
// REQUEST RECEIVED · REF: SY-—

We'll respond within 24 hours.

Routed to the partner facility for technical assessment. Custom synthesis quotes typically include indicative pricing, lead time, and a feasibility note.