We report net peptide content, not just purity — so the milligrams you dose aren't padded with water and counter-ion. RP-HPLC purity and ESI-MS identity, on a lot-numbered COA.
Net peptide content, not just purity — RP-HPLC + ESI-MS, lot-numbered COA.
Net peptide content on every lot's COA.
Reading a Peptide HPLC Trace — A 5-Minute Field Guide for Bench Scientists. Read our briefing →
Reading a peptide HPLC trace — a field guide. Read →
On reading HPLC traces. Read →
Custom Synthesis
Three workflows for research buyers — custom sequence design, modification service on a sequence you already use, and scale-up to preclinical volumes with the documentation scope your downstream regulatory framework needs.
Tier 01
You bring the sequence — we synthesise, purify, characterise, and ship a research-grade lot with the full analytical packet. Lengths from 5 to 50 amino acids on the standard route; longer sequences on request.
Lead time
21–45 days
Scale
Pilot from 100 mg
Tier 02
Sequence is in the catalogue or already commissioned — and you need a modified version for your experiment. We add the modification under the same release-scope umbrella so the modified lot still ships with sequence verification of the underlying peptide.
Lead time
14–30 days
Scale
From 50 mg
Tier 03
A peptide you've validated at mg-scale needs to scale up for an animal study, a preclinical campaign, or an IND-enabling toxicology run. We carry the synthesis route forward to multi-gram lots with documentation scoped to the downstream regulatory framework.
Lead time
45–90 days
Scale
From 5 g pilot
How a custom project runs
A custom-synthesis programme moves through three milestones — locking the spec, returning a pilot lot for your downstream validation, and scaling up against the documentation framework your study needs. The atelier QA sign-off sits on the pilot and on each scale-up step; no lot ships without the lot report.
Sequence, modifications, target purity, salt form, scale, intended downstream workflow. We return a written feasibility note + lead time + analytical-packet scope.
Pilot lot at the requested scale (typically 100 mg for Tier 01, 50 mg for Tier 02, 5 g for Tier 03). Lot report includes RP-HPLC, ESI-MS, MS/MS sequence, KF water, counter-ion. Pilot is held until you sign off on the validation in your hands.
Once the pilot is validated, the route is locked and scale-up campaigns run against the documentation framework agreed at spec stage (research / IND-enabling / extended-stability). Each commercial lot carries the full lot report.
Send the sequence (or the modification target), the scale you need, and the downstream workflow it has to support. We return a feasibility note, a lead time, and an analytical-packet scope within 12 business hours.
First reply under 24 hours from a synthesis chemist or analytical contact — not a templated auto-response. Lot-specific HPLC chromatogram, ESI-MS identity, MS/MS sequence (on request), KF water, and stability data returned with the quote.