Journal
Reference notes
Short notes on peptide analysis, lab reports, handling and quality, written for laboratory research and cited to their sources.
Latest
Peptide chemistry
Cagrilintide identity: structure, molecular weight and form
What makes cagrilintide a unique synthetic peptide? A look at its structure, lipidation, and how analytical chemistry verifies its molecular weight.
· 4 min read
Peptide chemistry
Retatrutide identity: structure, molecular weight and form
A technical breakdown of retatrutide's 39-amino-acid structure, its C20 lipid conjugation, and the analytical methods used to verify its identity.
· 5 min read
Reading lab reports
Retatrutide lab report: what to check
A guide to reading a Retatrutide certificate of analysis, from verifying molecular mass to spotting the difference between purity and net peptide content.
· 5 min read
Policy and economics
The gray market for unapproved peptides: how regulators respond
As the commercial supply of certain drugs stabilizes, the FDA is turning its attention to online peptide sellers, mass compounders, and the gray market.
· 5 min read
Policy and economics
Where retatrutide stands in FDA trials
Retatrutide has completed its primary Phase 3 trials, but complex manufacturing paperwork and regulatory inspections stand between it and approval.
· 6 min read
Policy and economics
Why GLP-1 medications cost what they cost in the United States
GLP-1 drug prices reflect a combination of extended patent exclusivity, intense lobbying efforts, and a lack of national price negotiation.
· 8 min read
Policy and economics
Why GLP-1 drugs are patented and research peptides are not
Explore the strange economics of synthetic modifications, patent law, and why natural sequences remain strictly in the laboratory supply market.
· 7 min read
Reading lab reports
KPV lab report: what to check
A clear guide to verifying a KPV certificate of analysis. Learn how to cross-reference lot numbers, read liquid chromatography graphs and confirm the mass.
· 7 min read
Sourcing
Why most online peptide vendor rankings cannot be trusted
Online vendor rankings for synthetic peptides rarely rely on actual chemical analysis. Discover how to check the raw instrument data yourself.
· 6 min read
Peptide chemistry
AOD-9604 identity: structure, molecular weight and form
A complete guide to the chemical structure, molecular weight and physical form of AOD-9604, including how laboratories verify its identity and purity.
· 7 min read
Peptide chemistry
MT-2 (Melanotan II) identity: structure, molecular weight and form
MT-2 (Melanotan II) is a synthetic cyclic heptapeptide. Explore its molecular structure, chemical formula, mass and physical form for laboratory analysis.
· 7 min read
Reading lab reports
What is in a CJC-1295 + Ipamorelin vial?
Unpacking the chemistry of a co-lyophilised peptide blend, and how analytical laboratories actually separate, identify and measure two compounds in one vial.
· 7 min read
Peptide chemistry
CJC-1295 (no DAC) identity: structure, molecular weight and form
Unpack the chemical structure, mass, and modifications that separate true CJC-1295 (no DAC) from confusing laboratory supply lists.
· 6 min read
Peptide chemistry
Ipamorelin identity: structure, molecular weight and form
Examine the molecular structure, properties and analytical characteristics of the synthetic pentapeptide Ipamorelin.
· 6 min read
Reading lab reports
What is in a Wolverine (BPC-157 + TB-500) vial?
A Wolverine vial contains a solid mixture of two synthetic peptides: BPC-157 and full-length TB-500. Lab analysis must verify both molecules independently.
· 7 min read
Policy and economics
Who pays for peptide research? Money, lobbying and the research gap
Late-stage trials cost a fortune, so companies only pay when a patent protects their return. Here is who pays, who lobbies, and why unowned compounds stall.
· 10 min read
Policy and economics
Why most peptides can't be patented, and why pharma passes on them
Natural peptide sequences cannot be patented, and an unowned molecule cannot pay back a billion-dollar trial. That leaves them in the research lab.
· 11 min read
Policy and economics
Why most research peptides are not FDA-approved: follow the money
FDA approval is an application a company funds, at an estimated $0.9 to $2.8 billion per drug. Here is why old peptide sequences rarely get one.
· 11 min read
Reading lab reports
What is in a KLOW vial?
A KLOW vial holds a lyophilised blend of GHK-Cu, BPC-157, TB-500 and KPV. Validating it requires methods to separate each component.
· 7 min read
Peptide chemistry
TB-500 identity: structure, molecular weight and form
A precise look at the chemical identity of TB-500, untangling the naming confusion between the 43-amino-acid sequence and the heptapeptide fragment.
· 6 min read
Reading lab reports
BPC-157 lab report: what to check
A reference guide to verifying BPC-157 identity, relative purity and net peptide content parameters on an analytical laboratory report.
· 7 min read
Reading lab reports
Signs a certificate of analysis may not be genuine
A reliable laboratory report is the only proof of a material's identity. Learn how to spot missing lot numbers, ghost labs, and manipulated analytical results.
· 7 min read
Reading lab reports
Specification vs measured value on a certificate
Understanding the difference between theoretical acceptance limits and the hard empirical data on a laboratory certificate of analysis.
· 7 min read
Reading lab reports
HPLC purity vs net peptide content
High-performance liquid chromatography measures the target sequence proportion in the peptide fraction, while content defines the absolute mass in a solid.
· 7 min read
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Reference
Peptide science basics
What a peptide is, how a sequence is written, and what a lyophilized solid actually is.
How peptides are studied
The model systems a compound passes through, and what each stage can and cannot establish.
Quality standards
Synthesis route, purification, release specification, and the difference between a target and a measurement.
Reading a lab test
How to read a lab test, what each assay proves, and why an unlinked PDF is worthless.
Storage and cold chain
Temperature, light, moisture and transit handling, with the specific conditions we ship and document against.
Sourcing transparency
Where material originates, who tests it, and which links in that chain we publish.
Glossary
Analytical and handling terms used across our documentation, defined precisely.