Author name: Dave

TB-500 carries a single methionine at position 6, and oxidising that one residue converts the peptide into thymosin beta-4 sulfoxide,

Oxytocin degradation in aqueous solution runs through its Cys1-Cys6 disulfide bridge and its three amide groups, not through the methionine

A peptide optical rotation value collapses every chiral centre in the molecule into a single scalar, which is why it

A certificate of conformance states that a peptide batch met specification. A certificate of analysis states what it measured. Only one contains evidence.

An annual product quality review is the formal, documented trending of every batch of a material made over a twelve

A peptide certificate of analysis reports ultraviolet area percent, and ultraviolet area percent can only report what absorbs light. Charged

Analytical instrument qualification is the documented evidence that the hardware which produced a purity number was fit for the measurement

Analytical method transfer is the documented process that qualifies a second laboratory to run a purity procedure validated elsewhere. What USP 1224, WHO TRS 1044 and ICH Q14 require.

A peptide stability study design determines how much evidence actually sits behind a shelf-life or retest date, and ICH Q1D

Peptide reprocessing and reworking are the two routes by which material that failed its specification can be brought back into