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ForumsCOA & Analytical TestingAmino acid analysis for peptide identity — beyond mass spec Page 4

Amino acid analysis for peptide identity — beyond mass spec

PeptideSynthNJ Wed, May 27, 2026 at 3:38 AM 21 replies 716 viewsPage 4 of 5
COA_Karl
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May 29, 2026 at 2:37 PM#16
andrew_nyc said:
The version of this that has an answer is narrower than the version being asked.

Mine went the same way, slower. I had assumed I was the exception until I read this.

Last edited: May 29, 2026 at 3:37 PM
40 13matt_MKE, Dr.ReproEndo, lucas_SP_BR and 37 others
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mark_tokyo
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May 30, 2026 at 12:13 AM#17
VendorMark said:
Keep the original post as written when you update it, and add the correction underneath.

This is exactly what I could not find anywhere else.

41 14bri_stats, pete_manc_UK, anna.melb_AU and 38 others
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TinaHashiRN
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May 30, 2026 at 9:50 AM#18

From the other side of the consultation, briefly. If two explanations both fit, the useful question is which one predicts something the other does not. That is answerable; arguing about which sounds more plausible is not.

42 15Dr.Martinez, mike_mod, SarahChen_PharmD and 39 others
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Sigma-Aldrich — Research-Grade Standards

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hyun_seoul
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May 30, 2026 at 7:26 PM#19
TinaHashiRN said:
If two explanations both fit, the useful question is which one predicts something the other does not.

Same pattern here, and in the same order.

Last edited: May 30, 2026 at 11:26 PM
43 16BariatricNurseD, MASHdoc_SA, GenomicsKate and 40 others
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mike_mod
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May 31, 2026 at 5:02 AM#20

Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Carry on.

Last edited: May 31, 2026 at 7:02 AM
15 13PurityPaulOR, MaxMetOK, MounjBrad and 12 others
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