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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingHas anyone dealt with moisture content analysis for lyophilized peptides? Page 9

Has anyone dealt with moisture content analysis for lyophilized peptides?

NauseaFreeNow Sun, Mar 16, 2025 at 5:34 AM 42 replies 1,836 viewsPage 9 of 9
jason_paloalto
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Jun 15, 2025 at 6:03 AM#41
NurseLeah_Nash said:
Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…

There is a second half to this that has not been said yet. The useful move here is to separate what is established from what is widely repeated. Those two sets overlap less than the confident tone of most write-ups suggests, and the second set is where nearly all the disagreement on this board comes from.

Last edited: Jun 15, 2025 at 11:03 AM
20 18tane_welly, Dr.PathRoch, mona_PHX and 17 others
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PeptideChemSF
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Jun 19, 2025 at 7:18 AM#42

Adding the numbers, since they settle part of this. For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine. Half the figures circulating in this community trace back to a secondary summary that dropped a qualifier.

Last edited: Jun 19, 2025 at 11:18 AM
21 19dave_SLC, FDA_TrackerJim, ricardo_MIA and 18 others
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Admin
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Jun 23, 2025 at 8:35 AM#43

Moderator note: a couple of off-topic posts removed. Carry on.

22 20RegAffairsDC, BiostatsBrad, PeptideSynthNJ and 19 others
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Sigma-Aldrich — Research-Grade Standards

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kate.chem
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Jun 27, 2025 at 9:55 AM#44
PeptideChemSF said:
For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

Filing a mild objection. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit. Not convinced. The evidence being cited is consistent with the conclusion and also consistent with two other conclusions nobody has ruled out.

23 21jennifer_SEA, tyler_CSCS, VanRx_Mike and 20 others
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maria_elpaso
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Jul 1, 2025 at 11:17 AM#45
PeptideChemSF said:
For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

Agreed, and the size of the effect matters as much as its existence. Something real and small gets treated here as though it were real and decisive.

Last edited: Jul 1, 2025 at 5:17 PM
24 22LibrarianMeg, bri_stats, pete_manc_UK and 21 others
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