MKM 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.
Certificates of analysis
Page 40 of 51 of this archive, newest first.
A peak with no chromophore is a peak with no peak
Non-chromophoric components — counter-ions, salts, some excipients — contribute mass to the vial and nothing at all to the chromatogram.
What changed at FGP in August, and what the company will not say about it
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Why a result on one vial says less than the trade needs it to
Every third-party report in this market describes a sample somebody chose to send. That choice is outside the laboratory’s control and outside its records.
TFC declines, for the 4th time, to name its synthesis house
Documentation practice is the only part of vendor quality a buyer can assess before purchase.
Independent analysis puts a TFC mazdutide lot at 98.1%, against 94.2% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Canada health authority warns on falsified dulaglutide pens
Reported from the analysis, not from a warning notice.
What the sequence tells you about how a peptide will fail
Reversed-phase chromatography runs in an organic, acidic mobile phase that dissociates most non-covalent aggregates on the way to the detector.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
Four ways a peptide comes apart
The sequence predicts the failure mode. A methionine predicts oxidation; an asparagine followed by a glycine predicts deamidation; a cysteine predicts disulphide scrambling.
VendorInvestigate result on a Tianjin tirzepatide lot lands 0.7 points below the supplier’s figure
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Collapse temperature, and the hour of the cycle where shelf life is lost
Lyophilisation does not stop degradation. It slows every pathway by removing the solvent that most of them require, and the residue of solvent that remains sets the rate.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
What changed at MKM in July, 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 SWB orforglipron lot at 97.7%, against 94.2% on the certificate
The report states the gradient, the wavelength and the integration threshold, which is more than most.
Medutest result on a Shenzhen tirzepatide lot lands 1.0 points below the supplier’s figure
The supplier has not disputed the finding. It has not explained the gap either.
Who signed this, and what did they undertake by signing it
A manufacturer’s certificate is a self-declaration. An accredited laboratory’s report is a third-party measurement. The trade prints both under one heading.
Independent analysis puts a MKM retatrutide lot at 95.5%, against 92.8% on the certificate
The supplier has not disputed the finding. It has not explained the gap either.
Holograms, QR codes and other things that are not verification
Reported from the analysis, not from a warning notice.
The batch number is the only thing connecting the page to the vial
What happens to traceability when bulk material is subdivided, repackaged and relabelled two or three times before sale.