The degradation product that elutes underneath the parent peak
An isoaspartate rearrangement changes the molecule and not the mass. A method that confirms identity by molecular weight alone will report it as the parent compound.
The Supply Chain
Page 37 of 67 of this archive, newest first.
Page 37
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What a 40% rise in coupling-reagent prices does to a 30 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.
A supplier suspends shipping to New Zealand after 12 consecutive customs detentions
The route did not close because of a rule about peptides.
Zhuhai export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Xi'an export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
What changed at SSA in February, 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 an 11% rise in coupling-reagent prices does to a 2 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.
What happens in solution that does not happen in the cake
Every degradation pathway accelerates by orders of magnitude on reconstitution, because the solvent that lyophilisation removed is the reagent most of them need.
SGN declines, for the 23rd time, to name its synthesis house
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.
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.
Denmark health authority warns on falsified tirzepatide pens
Reported from the analysis, not from a warning notice.
A supplier suspends shipping to Portugal after 23 consecutive customs detentions
The route did not close because of a rule about peptides.
What changed at BCH in February, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
JEEP declines, for the 23rd time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Who signed this, and what did they undertake by signing it
What the Journal asks when a document arrives unsigned, and what the answers have been.
What a 31% rise in coupling-reagent prices does to a 20 mg vial
Follow the resin, not the catalogue.