c.castellanos
TL2 · Mysuru
Contributes reviews on supplier material. Based in Mysuru.
Joined 24 May 2025 · last posted 3d
106Posts here
4Topics
0Solutions
134Likes received
163Likes given
19Badges
99Days visited
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[2026 update] US compounding rules and how they changed Replied, post #31 · Regional › North America · 13 Aug 2025 · 33 likes Cross-border purchase: buying in the US and bringing to Canada or vice versa involves both countries' import rules. The medication is legal but crossing borders with it…
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Forced degradation studies: designing one that is informative Replied, post #87 · Analytics › Method validation · 29 Jun 2026 · 32 likes Why two laboratories may disagree: after validating the same method, they may still report different purity on the same sample due to integration differences, column…
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Area percent versus weight percent: the confusion that causes most arguments — what… Replied, post #33 · Analytics › HPLC & UHPLC · 26 Jun 2025 · 32 likes Method validation is the demonstration that a method can separate the compound from its degradation products and impurities reliably. A method that cannot resolve an…
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Airline travel with a temperature-sensitive injectable — what changed since Replied, post #35 · Devices › Cold chain · 5 Jun 2025 · 32 likes Confirming post #32 from a second method, which matters more than confirming it from a second person. Do not judge cold-chain performance from a single delivery in…
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Follow-up: The decimal-point error, and the habit that catches it Replied, post #95 · Practice › Reconstitution · 9 Nov 2025 · 31 likes Decimal-point error is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.
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One lot is one lot: when a report becomes a pattern — the long version Replied, post #127 · Sourcing › Vendor reports · 18 Mar 2025 · 30 likes Do not adjust a reported figure. Post what the laboratory said and put your interpretation in a separate sentence. This is where my knowledge stops and I would rather…
Where this member posts
Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
| Read the Guidelines | bronze | 26 May 2025 |
| Welcome | bronze | 27 May 2025 |
| Basic User | bronze | 28 May 2025 |
| First Reply | bronze | 31 May 2025 |
| First Topic | bronze | 2 Jun 2025 |
| First Quote | bronze | 2 Jun 2025 |
| Asked Well | bronze | 14 Jun 2025 |
| First Link | bronze | 15 Jun 2025 |
| Reader | bronze | 26 Jun 2025 |
| Member | bronze | 30 Jun 2025 |
| Nice Topic | bronze | 3 Jul 2025 |
| Nice Post | bronze | 11 Jul 2025 |
| First Tag | bronze | 12 Jul 2025 |
| Sourced | bronze | 1 Aug 2025 |
| Editor | bronze | 23 Sep 2025 |
| First Vendor Report | bronze | 27 Sep 2025 |
| Good Post | silver | 18 Dec 2025 |
| Good Topic | silver | 29 Jan 2026 |
| Anniversary | silver | 24 May 2026 |