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 →
Supplier reference code · Retatrutide-class identity confirmed per batch COA · 5 mg
Overview
GLP1-R-5 is the 5 mg fill within the same upstream reference-code family as GLP1-R-30: 'R' designates Retatrutide-class material and '5mg' the per-vial quantity. The smaller fill suits pilot-scale aliquot work. As with every reference-code SKU, the code is a procurement reference, not a chemical identity — the API identity, sequence, salt form, and CAS are confirmed against the released batch-specific COA before order placement, and the named Retatrutide reference standard is the recommended route for direct procurement because its documentation attaches to a defined molecule. On a confirmed Retatrutide-class lot the analytical packet is the standard reference-grade set: RP-HPLC purity (gradient method, UV 214 nm), ESI-MS identity, LC-MS/MS sequence verification on request, counter-ion content, and water content by Karl Fischer. Confirm API by COA / label before use. This is reference-grade research material, distinct from compounding-scale API supply.
Applications & buyer fit
GLP-1 and metabolic-peptide buyers run incretin-pathway, body-composition, glucose-regulation, and energy-expenditure studies. Because the receptor pharmacology is sequence-sensitive, qualifying a new source means confirming identity within 0.5 Da of theoretical by ESI-MS, sequence verification by tandem MS on the first lot, and lot-to-lot consistency for reproducible metabolic research. Lyochem supplies this class reference-grade and mg-scale — distinct from compounding-grade (g/kg) API supply.
Biotech R&D Groups
Preclinical biotech and pharmaceutical discovery teams sourcing characterized peptides for receptor-pharmacology, screening, and method-development campaigns.
Contract Research Organisations (CROs)
CROs running preclinical and translational studies on behalf of academic, biotech, or pharma sponsors who need traceable reference material across multi-site campaigns.
Every release ships with its own batch-specific CoA — identity, purity, and the analytical scope agreed at quote stage, tied to the exact lot you receive.
Review a representative batch CoA before you order, so you can confirm the packet matches what your method or sponsor audit needs.
Supplied strictly as a research reagent to research institutions — not a finished dosage form and not for human administration. Buyer qualification runs at the inquiry stage.
Specifications
Documentation available on request
Regulatory note
Supplier reference code, not a chemical identity. Confirm API identity by batch-specific COA / label before order placement. Sold for Research Use Only under the receiving laboratory's institutional and jurisdictional regulations — not a finished dosage form and not labelled for human administration.
Frequently asked questions
The 5 mg fill is the smallest in the R-series and suits pilot-scale aliquot work where a larger batch would be wasted at the experimental scale. As with all reference-code SKUs, fill-size choice is independent of identity confirmation, which happens against the batch-specific COA at receipt.
Once identity is confirmed and the material reconstituted, Retatrutide-class peptide can be aliquoted into single-use volumes and held at −20 °C — the same handling guidance as the named standard. In practice 5 mg is already a small starting amount once in solution, so for multiple experiments ordering the appropriate total upfront is operationally cleaner than serial fractionation from one small vial.
The named reference standard attaches its analytical packet and documentation unambiguously to a defined molecule, which is what a first-time supplier qualification needs. The reference-code path adds a layer of opacity at the catalog level; identity is only resolved at the COA, so it is best reserved for established workflows that specifically require the code.
Related peptides
GIP / GLP-1 / glucagon tri-agonist · 39-mer metabolic research peptide
Supplier reference code · Retatrutide-class identity confirmed per batch COA · 30 mg