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c/hplc·submitted 1 months ago by u/vikram_asante

someone explain chromatogram to me like I have not read a paper in years

Methodbranch of 8 comments

chromatogram. That is the whole post, but I will justify it. Everything else people worry about in c/reconstitution is downstream of it. Titration speed, early fullness, the endless dose arguments — most of it resolves if you sort chromatogram out first, and almost nobody does. I say this having got it wrong for 23…

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8 comments, started 1 months ago
u/lina_novak17 points·1 months ago

two labs, two different baselines, two different purity numbers, both honest

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u/b12_baseline10 points·1 months ago

Respectfully this is a sample of one presented as a finding.

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u/priya_ogunleye8 points·1 months ago

related substances are where the story lives, not the main peak

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u/mass_spec_maggieMS8 points·1 months ago·edited

a round-robin on baseline integration would be genuinely useful

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u/chain_confirm_cpayments9 points·1 months ago

Sceptical. If this were true we would see it reflected in the data and we do not.

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u/elodie_grimaldi2 points·1 months ago

the detector wavelength matters more than people think

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The analytical deep end: RP-HPLC methods, gradient design, integration decisions, LC-MS confirmation, amino-acid analysis, water content, and why two labs can report 98.1% and 96.4% on the same vial and both be right. Post the chromatogram, not the summary line.

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