What a 41% rise in coupling-reagent prices does to a 10 mg vial
Follow the resin, not the catalogue.
Vendors
Page 47 of 48 of this archive, newest first.
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.
Retest date, expiry date, and the two conventions being confused
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.
GGPeps declines, for the 3rd time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at MKM in January, 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 badge economy, and what it is actually certifying
A badge asserts that something was tested. It does not assert what, when, on whose sample, by what method, or whether the lot on sale is the lot that was tested.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
Independent analysis puts a FGP liraglutide lot at 95.7%, against 95.0% on the certificate
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
What a 38% rise in coupling-reagent prices does to a 30 mg vial
Follow the resin, not the catalogue.
A supplier suspends shipping to Canada after 9 consecutive customs detentions
The route did not close because of a rule about peptides.
PeptideMeter result on a Guangzhou semaglutide lot lands 1.0 points below the supplier’s figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.
Sending the same vial twice, under two names
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.
QYB declines, for the 13th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
VendorInvestigate result on a Xi'an retatrutide lot lands 1.1 points below the supplier’s figure
The supplier has not disputed the finding. It has not explained the gap either.
What changed at WXT in January, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a BCH cagrilintide lot at 96.6%, against 93.4% on the certificate
The result is unremarkable. What the report omits is not.
CPC declines, for the 14th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What a 23% rise in coupling-reagent prices does to a 10 mg vial
Follow the resin, not the catalogue.