Tianjin export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
The Supply Chain
Page 45 of 67 of this archive, newest first.
Page 45
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.
Portugal health authority warns on falsified semaglutide pens
Reported from the analysis, not from a warning notice.
Check the vial, not the box
A document is only as good as the chain that connects it to the material, and most chains here are two or three links longer than the paperwork admits.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What a 32% rise in coupling-reagent prices does to a 15 mg vial
Follow the resin, not the catalogue.
India health authority warns on falsified semaglutide pens
Reported from the analysis, not from a warning notice.
Xianning export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
HJ declines, for the 20th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.