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c/hplc·submitted 5 months ago by u/hana_lehtinen

[Question] chromatogram — what am I missing here

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Been lurking in c/t2dglp1 for about 23 months and finally have something worth posting. Short version: week 75, 0.5mg, and method development is the bit I still cannot get a straight answer on. I have read the wiki, I have read the last 33 threads, and the answers split roughly down the middle. What I actually want…

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6 comments, started 5 months ago

u/isabela_nilsen156 points·5 months ago

This is the correct method framing. Column and gradient are load-bearing fields.

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[removed]59 points·5 months ago

[removed by moderator]

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u/hydration_hank20 points·5 months ago

Strongly agree. Largest single impurity tells a different story than total purity.

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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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