What changed at WWB in November, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
The Supply Chain in 2024
Page 5 of 27 of this archive, newest first.
Homopeptide declines, for the 8th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What Janoshik would need in order to certify sterility, and why it does not
The absence of microbiological capability in this market is a commercial fact with a straightforward explanation, and it is worth understanding before blaming anybody for it.
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 India after 14 consecutive customs detentions
The route did not close because of a rule about peptides.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
A supplier suspends shipping to Italy after 10 consecutive customs detentions
The route did not close because of a rule about peptides.
Tianjin export categories for peptide intermediates were quietly renamed
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.
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.
What a 37% rise in coupling-reagent prices does to a 2 mg vial
Follow the resin, not the catalogue.
A supplier suspends shipping to Switzerland after 4 consecutive customs detentions
The route did not close because of a rule about peptides.
What a 9% rise in coupling-reagent prices does to a 20 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.
What changed at QSC in October, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Asparagine, glycine, and the two residues that decide a shelf life
The sequence predicts the failure mode. A methionine predicts oxidation; an asparagine followed by a glycine predicts deamidation; a cysteine predicts disulphide scrambling.
A supplier suspends shipping to Norway after 18 consecutive customs detentions
The route did not close because of a rule about peptides.
Asparagine, glycine, and the two residues that decide a shelf life
The sequence predicts the failure mode. A methionine predicts oxidation; an asparagine followed by a glycine predicts deamidation; a cysteine predicts disulphide scrambling.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
What changed at SGN in October, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.