What a 15% rise in coupling-reagent prices does to a 5 mg vial
Follow the resin, not the catalogue.
The Supply Chain in 2026
Page 3 of 13 of this archive, newest first.
What twenty companies say about storage, and what they have measured
A stability programme needs a protocol, defined conditions, a stability-indicating method and time. Time is the ingredient no commercial testing service can sell.
Guangzhou export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Chengdu export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Argentina health authority warns on falsified exenatide pens
Reported from the analysis, not from a warning notice.
What changed at WXT in May, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Sterility is not a percentage, which is the whole difficulty
Purity, content, identity, sterility and endotoxin are five separate determinations. A single sheet of paper carrying one of them is not evidence about the other four.
A supplier suspends shipping to the Netherlands after 5 consecutive customs detentions
The route did not close because of a rule about peptides.
What a 26% rise in coupling-reagent prices does to a 20 mg vial
Follow the resin, not the catalogue.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Portugal health authority warns on falsified exenatide pens
Reported from the analysis, not from a warning notice.
What changed at QST in May, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
How a claim degrades between the bench and the listing
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
What changed at QST in May, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
A supplier suspends shipping to the United Kingdom after 14 consecutive customs detentions
The route did not close because of a rule about peptides.
Xianning export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
A supplier suspends shipping to Argentina after 22 consecutive customs detentions
The route did not close because of a rule about peptides.
What changed at WXT in May, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
How a claim degrades between the bench and the listing
Every step between the laboratory report and the product page removes information, and the badge is the last step.