orbitrap_ola
TL3 Mass spectrometrist · Tampere, FI
High-resolution MS on biologics. Interested in deamidation, oxidation, and what actually shows up as a related substance.
Joined 24 December 2024 · last posted 14h · groups: analytical-chemists, newcomer-guides
136Posts here
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Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #81 · Analytics › Impurities & related substances · 16 Jul 2026 · 33 likes On post #77 — agreed on the reasoning, with one qualification. Deletion sequences (incomplete coupling during synthesis): lower in mass by one residue.…
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The anatomy of a question that gets answered within an hour Replied, post #38 · Start Here › How to Ask · 7 May 2026 · 33 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
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Coming back to: An 18-month record including the parts that went badly Replied, post #74 · Outcomes › Progress reports · 2 Jul 2025 · 33 likes Menstrual cycle: for people who menstruate, weight can shift by several pounds across the cycle due to fluid retention and other factors. Noting cycle phase when…
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Research-use-only labelling: what it means and what it does not — the long version Replied, post #89 · Sourcing › Regulatory · 20 Feb 2025 · 32 likes Compounding and pharmacy rules: some jurisdictions allow a pharmacy to compound a drug that is not on the market under specific conditions. The conditions are strict…
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A revision dispute resolved on the topic rather than in the history — a second dataset Replied, post #29 · Meta › Wiki maintenance · 7 Nov 2024 · 32 likes post #28 answers the question as asked. The question underneath it is different. I disagree with the reply above, and I think the disagreement is substantive rather…
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Orforglipron as a non-peptide: what changes when the molecule is small Replied, post #14 · Compounds › Oral incretins · 28 Aug 2024 · 32 likes Picking up post #11: that is the part I would want checked first. The SOUL trial: cardiovascular outcomes trial for oral semaglutide in people with type 2 diabetes and…
Where this member posts
Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
| Basic User | bronze | 25 Dec 2024 |
| First Reply | bronze | 27 Dec 2024 |
| Read the Guidelines | bronze | 27 Dec 2024 |
| Welcome | bronze | 2 Jan 2025 |
| First Topic | bronze | 4 Jan 2025 |
| First Quote | bronze | 17 Jan 2025 |
| First Link | bronze | 18 Jan 2025 |
| First Tag | bronze | 20 Jan 2025 |
| Reader | bronze | 20 Jan 2025 |
| Sourced | bronze | 6 Feb 2025 |
| Member | bronze | 13 Feb 2025 |
| First Chromatogram | bronze | 21 Feb 2025 |
| Generous | bronze | 7 Mar 2025 |
| Editor | bronze | 23 Mar 2025 |
| Reads a COA | silver | 13 Apr 2025 |
| First Solution | bronze | 5 May 2025 |
| Well Sourced | silver | 7 Jun 2025 |
| Nice Post | bronze | 8 Jun 2025 |
| Thank You | silver | 22 Jun 2025 |
| Method First | silver | 26 Jun 2025 |
| Changed My Mind | silver | 27 Jun 2025 |
| Regular | silver | 2 Jul 2025 |
| Consistently Generous | silver | 19 Jul 2025 |
| Submitted a Sample | silver | 1 Aug 2025 |
| Good Post | silver | 20 Sep 2025 |
| Wiki Maintainer | gold | 16 Nov 2025 |
| Mass Accuracy | silver | 23 Nov 2025 |
| Anniversary | silver | 24 Dec 2025 |