What twenty companies say about storage, and what they have measured
A retest date says that material should be re-examined before use. An expiry date says it should not be used. The trade uses the second word for the first concept.
Cold chain
Page 8 of 15 of this archive, newest first.
A supplier suspends shipping to Ireland after 15 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to New Zealand after 6 consecutive customs detentions
The route did not close because of a rule about peptides.
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 Switzerland after 19 consecutive customs detentions
The route did not close because of a rule about peptides.
Aggregation: the impurity your chromatogram dissolved before it looked
Deamidation, oxidation, aggregation and hydrolysis account for nearly all of what happens to a peptide over time. Each has a characteristic residue, a characteristic…
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
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 the United Kingdom after 13 consecutive customs detentions
The route did not close because of a rule about peptides.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
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.
A supplier suspends shipping to New Zealand after 12 consecutive customs detentions
The route did not close because of a rule about peptides.
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.
A supplier suspends shipping to Portugal after 23 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to Ireland after 21 consecutive customs detentions
The route did not close because of a rule about peptides.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
What twenty companies say about storage, and what they have measured
Storage instructions in this market are close to uniform and almost never accompanied by the study that would justify them. Uniformity is a sign of convention, not of…
A supplier suspends shipping to the Netherlands after 6 consecutive customs detentions
The route did not close because of a rule about peptides.