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.
Ruslan Yevtushenko
Page 8 of 13 of this archive, newest first.
Archive — page 8
258 piecesA supplier suspends shipping to New Zealand after 3 consecutive customs detentions
The route did not close because of a rule about peptides.
Japan declines to reimburse tirzepatide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.
A supplier suspends shipping to Poland after 11 consecutive customs detentions
The route did not close because of a rule about peptides.
Argentina declines to reimburse exenatide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.
Oxidation, and the peroxide that came in with the surfactant
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 21 consecutive customs detentions
The route did not close because of a rule about peptides.
Singapore declines to reimburse dulaglutide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.
A supplier suspends shipping to Nigeria after 23 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to Brazil after 18 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to Switzerland after 14 consecutive customs detentions
The route did not close because of a rule about peptides.
Benzyl alcohol is a preservative, not a sterilising agent
At low concentrations a measurable fraction of peptide can adsorb to glass and plastic surfaces, and the loss is largest exactly where it is least expected.
A supplier suspends shipping to Singapore after 19 consecutive customs detentions
The route did not close because of a rule about peptides.
Blind duplicates: what happens when a laboratory does not know it is being watched
Two years ago we ran an anonymised version of this comparison and promised a named one. This is it, with every method printed in full.
A supplier suspends shipping to India after 4 consecutive customs detentions
The route did not close because of a rule about peptides.
Japan declines to reimburse exenatide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.
A supplier suspends shipping to Nigeria after 20 consecutive customs detentions
The route did not close because of a rule about peptides.
A supplier suspends shipping to New Zealand after 14 consecutive customs detentions
The route did not close because of a rule about peptides.
India declines to reimburse dulaglutide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.
Brazil declines to reimburse dulaglutide outside a specialist service
Efficacy was never the question in this appraisal. Duration of treatment was.