Oxidation, and the peroxide that came in with the surfactant
We describe each pathway in enough chemical detail to explain why it is invisible to the method the trade uses, because that is the part which has practical consequences.
The Supply Chain
Page 40 of 67 of this archive, newest first.
Page 40
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What changed at GL Biochem 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.
What a 32% rise in coupling-reagent prices does to a 20 mg vial
Follow the resin, not the catalogue.
A supplier suspends shipping to New Zealand after 3 consecutive customs detentions
The route did not close because of a rule about peptides.
FGP declines, for the 15th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Denmark health authority warns on falsified exenatide pens
Reported from the analysis, not from a warning notice.
Shenzhen export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
The empty half of every certificate of analysis
Every certificate circulating in this market answers a question about molecules. Almost none answers a question about organisms, pyrogens, or the integrity of the seal.
Australia health authority warns on falsified semaglutide pens
Reported from the analysis, not from a warning notice.
A supplier suspends shipping to Poland after 11 consecutive customs detentions
The route did not close because of a rule about peptides.
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.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What changed at CPC 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.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Guangzhou export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
France health authority warns on falsified dulaglutide pens
Reported from the analysis, not from a warning notice.
What a 27% rise in coupling-reagent prices does to a 5 mg vial
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.
The pyrogen question has a price, and it is not the price of a purity run
Endotoxin is the more tractable of the two questions, and a kinetic chromogenic determination is neither slow nor exotic. It is simply not on the menu.