What changed at WXT in January, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Vendors
Page 30 of 48 of this archive, newest first.
What a 27% rise in coupling-reagent prices does to a 5 mg vial
Follow the resin, not the catalogue.
Nantong export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Reading a certificate for what it does not say
The most consequential features of most certificates in this market are the tests that do not appear on them at all.
Independent analysis puts a SGN survodutide lot at 97.0%, against 92.8% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
KP declines, for the 13th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
A supplier suspends shipping to New Zealand after 21 consecutive customs detentions
The route did not close because of a rule about peptides.
Independent analysis puts a ERP liraglutide lot at 99.4%, against 98.3% on the certificate
The result is unremarkable. What the report omits is not.
CPC declines, for the 6th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Xianning export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
VendorInvestigate result on a Shanghai dulaglutide lot lands 2.0 points below the supplier’s figure
The result is unremarkable. What the report omits is not.
Shanghai export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Independent analysis puts a QST exenatide lot at 98.4%, against 95.6% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
What an 11% rise in coupling-reagent prices does to a 20 mg vial
Follow the resin, not the catalogue.
Independent analysis puts a HJ tirzepatide lot at 97.3%, against 94.2% on the certificate
The supplier has not disputed the finding. It has not explained the gap either.
What changed at QYB in December, 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 Brazil after 18 consecutive customs detentions
The route did not close because of a rule about peptides.
The badge is about a sample. The listing is about a product.
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
VendorInvestigate result on a Chengdu cagrilintide lot lands 3.1 points below the supplier’s figure
A reminder that a purity figure is the output of a method, and that methods differ.
What changed at QSC in December, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.