A supplier suspends shipping to Saudi Arabia after 15 consecutive customs detentions
The route did not close because of a rule about peptides.
Vendors
Page 6 of 48 of this archive, newest first.
What a 32% rise in coupling-reagent prices does to a 10 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.
Independent analysis puts a BCH mazdutide lot at 96.0%, against 93.7% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
What a 15% rise in coupling-reagent prices does to a 30 mg vial
Follow the resin, not the catalogue.
Independent analysis puts a MKM liraglutide lot at 99.0%, against 97.4% on the certificate
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
An interlaboratory comparison nobody had run
Two years ago we ran an anonymised version of this comparison and promised a named one. This is it, with every method printed in full.
A supplier suspends shipping to Singapore after 19 consecutive customs detentions
The route did not close because of a rule about peptides.
QST names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a GGPeps cagrilintide lot at 99.2%, against 95.1% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
FGP names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
A supplier suspends shipping to Switzerland after 19 consecutive customs detentions
The route did not close because of a rule about peptides.
Independent analysis puts a QST semaglutide lot at 98.4%, against 97.6% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Tianjin export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
A supplier suspends shipping to Switzerland after 17 consecutive customs detentions
The route did not close because of a rule about peptides.
VendorInvestigate result on a Chengdu tirzepatide lot lands 3.4 points above the supplier’s stated figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
The same signature, the same peak, three different batches
A blank certificate with the numbers left editable is an ordinary internal document. Its circulation as a finished record is the problem.
PeptideMeter result on a Wuhan mazdutide lot lands 2.3 points above the supplier’s stated figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.