What a 20% rise in coupling-reagent prices does to a 20 mg vial
Follow the resin, not the catalogue.
Vendors
Page 19 of 48 of this archive, newest first.
Custody, condition and the temperature nobody logged
What a laboratory can and cannot know about the provenance, storage history and representativeness of what lands on its bench.
A supplier suspends shipping to Singapore after 11 consecutive customs detentions
The route did not close because of a rule about peptides.
WWB 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 a 12% rise in coupling-reagent prices does to a 15 mg vial
Follow the resin, not the catalogue.
Medutest result on a Qingdao orforglipron lot lands 0.8 points above the supplier’s stated figure
A reminder that a purity figure is the output of a method, and that methods differ.
A supplier suspends shipping to France after 11 consecutive customs detentions
The route did not close because of a rule about peptides.
What changed at SSA in July, and what the company says prompted it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
The badge is about a sample. The listing is about a product.
A badge asserts that something was tested. It does not assert what, when, on whose sample, by what method, or whether the lot on sale is the lot that was tested.
What a 27% rise in coupling-reagent prices does to a 2 mg vial
Follow the resin, not the catalogue.
PeptideMeter result on a Wuxi mazdutide lot lands 2.1 points above the supplier’s stated figure
The supplier confirmed the determination and supplied the method behind its own figure inside a week.
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 QST dulaglutide lot at 95.4%, against 91.5% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
QYB names the synthesis and fill sites behind its catalogue
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Six words a verification badge would need to mean anything
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
ERP 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 JEEP orforglipron lot at 95.5%, against 92.7% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
A supplier suspends shipping to Turkey after 24 consecutive customs detentions
The route did not close because of a rule about peptides.
Suzhou export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.