What changed at WXT 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.
TheCompound Journal
Reporting on incretins, compounding & the peptide supply chain
The Supply Chain Dispatch
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
ERP has again declined to identify the facility that synthesises the material it sells. The Journal has now put the question in writing on 14 occasions since 2024, in each case asking only for the name of the synthesis house or an acknowledgement that the company is a reseller. The replies have been courteous and have addressed a different question.
The Journal’s written requests are dated across 14 quarters and were sent to the address the company publishes for commercial enquiries. Four received a reply within a fortnight. Each reply restated the company’s quality claims and none named a facility. One offered a video call, which the Journal declined on the grounds that a video call produces nothing publishable.
The revised document states a detection wavelength of 214 nm, a gradient duration, a column identifier and a threshold of 0.05% of main-peak area. It does not state a reference-standard lot number, and it does not report content, water or counter-ion. On the Journal’s assessment that puts it in the upper quartile of certificates circulating in this market, which says more about the market than about the document.
The distinction that matters here is between a company that will not answer and a company that cannot. A reseller with no visibility into its own supply chain is in a different position from a manufacturer protecting a process, and the two are indistinguishable from the outside — which is precisely why the Journal reports the count of unanswered requests rather than an inference about the reason.
"Printing the threshold costs them nothing and it is the single most useful line you can add," said Dr Éliane Casgrain, health economist, Université de Montréal. "It converts a number you have to trust into a number you can check."
The Journal has asked ERP whether the practice will be applied to all lots or only to some, and whether earlier certificates will be reissued. The dossier records the reply.
Each dossier links the company’s own storefront, marked nofollow and sponsored, so a reader can check a claim against the seller’s own copy. The Journal sells nothing, takes no commission on any transaction, and a link is not a recommendation.
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
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.
The header identifies the batch, the table records the tests, and the footer says who is answerable. Two of the three are usually incomplete.
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
A retest date says that material should be re-examined before use. An expiry date says it should not be used. The trade uses the second word for the first concept.