Qingdao export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Vendors
Page 27 of 48 of this archive, newest first.
Homopeptide declines, for the 12th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
What changed at GGPeps in February, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Chengdu export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
What a 30% rise in coupling-reagent prices does to a 10 mg vial
Follow the resin, not the catalogue.
A tested vial is evidence about a vial
A result on one vial generalises to a batch only if the vial was drawn in a way that makes it representative — and nobody records how it was drawn.
SGN declines, for the 16th 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.
CPC 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 a 15% rise in coupling-reagent prices does to a 30 mg vial
Follow the resin, not the catalogue.
Janoshik result on a Hong Kong cagrilintide lot lands 3.6 points below the supplier’s figure
The report states the gradient, the wavelength and the integration threshold, which is more than most.
How a claim degrades between the bench and the listing
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.
Nantong export categories for peptide intermediates were quietly renamed
Follow the resin, not the catalogue.
Independent analysis puts a SGN liraglutide lot at 97.4%, against 93.3% on the certificate
A reminder that a purity figure is the output of a method, and that methods differ.
PeptideMeter result on a Zhuhai mazdutide lot lands 2.7 points below the supplier’s figure
The result is unremarkable. What the report omits is not.
Independent analysis puts a CPC dulaglutide lot at 95.9%, against 94.7% on the certificate
The supplier has not disputed the finding. It has not explained the gap either.
What a 40% rise in coupling-reagent prices does to a 30 mg vial
Follow the resin, not the catalogue.
The badge economy, and what it is actually certifying
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
Why summer is a documented quality problem in this trade
The route did not close because of a rule about peptides.
PeptideMeter result on a Tianjin semaglutide lot lands 1.1 points below the supplier’s figure
The Journal submitted the sample and paid for the analysis. The vendor was told in advance.