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ForumsCOA & Analytical TestingAmino acid analysis for peptide identity — beyond mass spec Page 5

Amino acid analysis for peptide identity — beyond mass spec

PeptideSynthNJ Wed, May 27, 2026 at 3:38 AM 21 replies 716 viewsPage 5 of 5
DanielChem_CHI
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Mar 2024
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May 31, 2026 at 2:34 PM#21

The figures, for anyone assembling their own picture. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.

16 14fiona_VT, denise_HTX, raj_cambridge and 13 others
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gary_naperville
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Oct 2024
Naperville, IL
Jun 2, 2026 at 10:47 AM#22

A narrower follow-up, since the general answer is now clear:

How people separated a drug effect from the ordinary consequences of a large deficit and disrupted sleep, because I cannot?

17 15DoseLogDan, SleepFixSam, PurityPaulOR and 14 others
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robert_kc
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Oct 2024
Kansas City, MO
Jun 4, 2026 at 6:59 AM#23
DanielChem_CHI said:
One practical note: write down what you did and when, before you need it.

I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.

Worth separating that from mood and mental health, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

18 16DoseLogDan, SleepFixSam, PurityPaulOR and 15 others
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pete_nash
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Aug 2024
Nashville, TN
Jun 6, 2026 at 3:10 AM#24
DanielChem_CHI said:
One practical note: write down what you did and when, before you need it.

Fair, and it stops being fair at the extremes. The middle of the range is well understood; the ends are where the honest answer is that nobody knows.

19 17SarahChen_PharmD, sarah.morrison, NeuroNate and 16 others
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ChrisMacros
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Sep 2024
Michigan
Jun 7, 2026 at 11:20 PM#25
DanielChem_CHI said:
One practical note: write down what you did and when, before you need it.

Thank you — that is the clearest version of this I have read, and I have read a lot of them.

20 18bri_stats, pete_manc_UK, anna.melb_AU and 17 others
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