What a 25% rise in coupling-reagent prices does to a 2 mg vial
Follow the resin, not the catalogue.
Vendors
Page 4 of 48 of this archive, newest first.
Independent analysis puts a MKM dulaglutide lot at 98.2%, against 96.7% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Hong Kong export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
VendorInvestigate result on a Zhuhai survodutide lot lands 4.2 points above the supplier’s stated figure
The supplier confirmed the determination and supplied the method behind its own figure inside a week.
Same material, different gradients, different answers
The Journal submitted split samples from single lots to three assay services, under names unconnected to this publication, and published each method alongside each result.
HJ names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at Homopeptide in April, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a MKM cagrilintide lot at 97.3%, against 95.9% on the certificate
The supplier confirmed the determination and supplied the method behind its own figure inside a week.
A supplier suspends shipping to Mexico after 5 consecutive customs detentions
The route did not close because of a rule about peptides.
What changed at QST in April, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
PeptideMeter result on a Changsha mazdutide lot lands 1.3 points above the supplier’s stated figure
A reminder that a purity figure is the output of a method, and that methods differ.
WXT names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at Homopeptide in April, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a SWB liraglutide lot at 95.6%, against 93.9% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Hangzhou export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
The named comparison we promised two years ago
The Journal submitted split samples from single lots to three assay services, under names unconnected to this publication, and published each method alongside each result.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
What changed at SGN in April, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What a 30% rise in coupling-reagent prices does to a 15 mg vial
Follow the resin, not the catalogue.
The certificate says 2026. The vial in your hand does not say anything.
What happens to traceability when bulk material is subdivided, repackaged and relabelled two or three times before sale.