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 →
Lyochem synthesizes characterised Semaglutide, Tirzepatide, Retatrutide and metabolic research peptides for biomedical labs, biotech R&D, and CROs — backed by a full reference catalogue. Every lot ships with its own analytical packet: RP-HPLC chromatogram, ESI-MS identity, and MS/MS sequence on request — methodology, not marketing.
RP-HPLC · Illustrative lot
BPC-157 · Lot LC-26-A0517
Sequence
15-mer
MW
1419.55
CAS
137525-51-0
ESI-MS
1420.6
Illustrative HPLC trace · BPC-157 lot LC-26-A0517 · representative of a ≥99 % released lot
No order minimums
Single vial to multi-gram scale
Volume & academic pricing
Quotes reviewed per project
Dedicated technical contact
Reach a chemist, not a form
Ships worldwide
US · EU · APAC research buyers
Analytical scope on every lot
Methods aligned with USP ⟨621⟩ · ⟨1225⟩ · ICH Q2 · EP equivalents
Browse by Research Area
From GLP-1 and metabolic actives to GH-axis and Khavinson short bioregulators, browse the catalogue by the experimental context a working lab buyer thinks in.
Largest research cluster
15 SKUsSemaglutide, Tirzepatide, Retatrutide, Cagrilintide, Survodutide, AOD-9604 and Tesofensine. Incretin (GLP-1 / GIP / glucagon) receptor-agonist and weight-regulation research peptides — reference-grade, mg-scale, characterized by HPLC + MS for metabolic research. Research use only.
Includes Retatrutide · Semaglutide
Browse glp-1 & metabolic peptides
Most-cited cluster
15 SKUsCJC-1295, Sermorelin, Ipamorelin, GHRP-2/6, IGF-1 LR3, MGF, Tesamorelin and HGH-fragment 176-191. GHRH-receptor agonists, GHSR (ghrelin-receptor) agonists, and IGF-axis reagents for somatotropic-pathway research.
Includes AOD9604 · CJC-1295
Browse gh-axis peptides
Cerebrolysin · DSIP
Browse
ADMAX Research Prepar… · Bronchogen
Browse
ACE-031 · Adipotide
Browse
5-Amino-1MQ · AICAR
Browse
ARA-290 · KPV
Browse
B7-33 · BPC-157
Browse
Epithalon · FOXO4-DRI
Browse
0.6% Acetic Acid Water · BAC Water
Browse
Custom Synthesis
Fmoc-SPPS up to ~50 residues, modifications (PEGylation, fluorophore / isotope labelling), milligram-to-multi-gram scale. Two-signature release on every custom project — synthesis chemist + analytical lead.
Most-cited research peptides
Twelve of the 100 characterised reference standards in the Lyochem library. Every entry ships with the same lot-specific analytical packet (RP-HPLC + ESI-MS + MS/MS on request) so the data below carries through to the COA you receive.
| Sequence | Vial Sizes | ||||
|---|---|---|---|---|---|
| BPC-157 | 137525-51-0 | 1419.55 | GEPPPGKP… | ≥ 99.0% | 2 / 5 / 10 / 20 mg |
| Cagrilintide | 1415456-99-3 | — | — | ≥ 99.0% | 2 / 5 / 10 mg |
| CJC-1295 (no DAC) | — | — | — | ≥ 99.0% | 2 / 5 / 10 mg |
| CJC-1295 + Ipamorelin | — | — | — | ≥ 99.0% per component | 10 mg |
| Epithalon | 307297-39-8 | — | AEDG | ≥ 99.0% | 10 / 40 / 50 mg |
| Ipamorelin | 170851-70-4 | — | — | ≥ 99.0% | 2 / 5 / 10 mg |
| KPV | 67727-97-3 | — | KPV | ≥ 99.0% | 5 / 10 mg |
| MOTS-c (Human) | 1627580-64-6 | — | MRWQEMGY… | ≥ 99.0% | 10 / 15 / 20 / 40 mg |
| NAD+ | 53-84-9 | — | — | ≥ 99.0% | 100 / 500 / 1000 mg |
| Retatrutide | 2381089-83-2 | — | — | ≥ 99.0% | 5 / 10 / 12 / 15 / 16 / 20 / 24 / 30 / 40 / 50 / 60 mg |
| Semaglutide | 910463-68-2 | 4113.58 | — | ≥ 99.0% | 2 / 5 / 10 / 15 / 20 / 30 / 50 mg |
| Semax | 80714-61-0 | — | MEHFPGP | ≥ 99.0% | 5 / 10 / 11 / 30 mg |
All entries supplied for Research Use Only (RUO) and sold exclusively to qualified academic, biotech R&D, and CRO buyers. See the B2B / RUO policy.
Lot Report · Excerpt
TB-500 · Lot LC-26-B0312
The lot report is the document you reference in your supplementary materials and your supplier-qualification file. Every release carries the same scope.
Illustrative lot report excerpt · TB-500 lot LC-26-B0312 · representative scope released with every shipment
Quality you can verify
Every Lyochem lot is released with its own analytical packet — chromatogram, mass spectrum, sequence confirmation, water content, stability. Methods are aligned with USP <1225>, EP, and ICH Q2 — the document a paper reviewer or CRO QA team can read directly off the page.
≥99%
HPLC purity floor
MS/MS
Sequence verified
12-mo
-20 °C stability
RP-HPLC + ESI-MS on every release, integrated purity reported at the main retention time, mass within ± 0.5 Da of theoretical.
LC-MS/MS sequence on request — b- and y-ion ladder assignment against the theoretical sequence; full-ladder coverage reported on the data packet.
−20 °C stability programme through 12 months; accelerated 40 °C add-ons on request for first-time supplier qualification.
Lab Notes
Short methodology briefs aimed at bench scientists and CRO QA teams. Where the catalogue answers “what is the standard?”, the lab note answers “how do I read its data?”.
An identity, receptor-pharmacology, and analytical-verification comparison of the four most-sourced GLP-1 and metabolic research peptides — with CAS numbers, molecular weights, and per-lot documentation priorities.
8 min read
A bench-science procurement checklist for peptide reference-standard release: COA, HPLC trace, MS identity, sequence evidence, purity method, counter-ion, water, and storage data.
5 min read
A lab-side verification workflow for Semaglutide, Tirzepatide, Retatrutide, Cagrilintide, MOTS-c, AOD9604, NAD+, and adjacent metabolic-research standards.
7 min read
How to read the chromatogram that ships with your lot — main peak, retention time, the truncations clustered around it, baseline behaviour, and what each tells you about the synthesis.
5 min read
ESI-MS on the lot report confirms a molecular weight, not a sequence. Where the gap matters, why isobaric pairs and chain-order swaps slip through, and the two analytical add-ons that actually prove sequence — LC-MS/MS fragmentation and Edman degradation.
7 min read
Case Studies
Anonymized accounts from real engagements — academic labs, biotech R&D, CROs, and shared instrumentation cores — with every institution and single-number outcome removed, but the synthesis route, analytical packet, and timeline preserved.
Sequence brief → commercial batch
7 weeks
Read the story
Concept → pilot batch delivery
5 weeks
Read the story
RFQ → first site shipment
6 weeks
Read the story
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.