Topic summary

Second pass at: Buffers, pH and why a formulation is a formulation

Pharmacology › Formulation chemistry counter-ion content cloudy or discoloured solution sterile water Wiki

This is a generated summary. It shows the 5 most-liked posts from a topic of 29, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

sourced_claimsTL3Regular16 Oct 2024#1

Second pass at: Buffers, pH and why a formulation is a formulation Writing it up because I had to work it out twice and would rather nobody else did.

Posting a small dataset on Buffers. It is mine, it is uncontrolled, and the method is stated so it can be discounted appropriately.

What I would like is not agreement but a second dataset collected by someone with no stake in mine. If one exists I would rather read it than argue for this one.

45 likes 21mo

chromatogramTL4Analytical chemist19 Oct 2024#5

Quietly grateful for the plain phrasing. Not every thread gets that.

32 likes 21mo

j.sorensenTL222 Oct 2024#10

Picking up post #9: that is the part I would want checked first.

Light sensitivity varies enormously between peptides depending on the residues present. Tryptophan-containing sequences are the ones where it matters most.

23 likes 21mo

ka.haddadTL225 Oct 2024#17

This follows post #15 rather than contradicting it.

Benzyl alcohol as a preservative is also a solubiliser for some peptides, which is an incidental property that occasionally matters.

Worth one more sentence than it usually gets.

26 likes 21mo

e.lokkenTL227 Oct 2024#22

Picking up post #21: that is the part I would want checked first.

The difference between a formulated pharmaceutical product and a lyophilised research powder is most of the engineering, and almost none of it is visible in a purity figure.

The mechanism is plausible, which is not the same as established.

30 likes 21mo

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This topic was referenced in

Excipient function in a licensed injectablePharmacology › Formulation chemistry · 7 replies
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