Understand the source comparison
What Does Tesofensine Look Like in Solution: [Type] Comparison
Before making assumptions about whether your reconstituted tesofensine is viable, compare what you're seeing to these baseline standards. Small deviations in appearance signal big differences in stability and usability. Clarity Clear to faintly opalescent. Tex
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Before making assumptions about whether your reconstituted tesofensine is viable, compare what you're seeing to these baseline standards. Small deviations in appearance signal big differences in stability and usability.
- Clarity
- Clear to faintly opalescent. Text readable through vial
- Yellow tinge, amber discoloration, or visible cloudiness throughout
- Uniform turbidity, visible particles, or filament structures
- If you can't read small print through the vial, it's compromised
- Color
- Colorless. No detectable hue against white background
- Faint yellow at liquid surface, deepening to amber over time
- Varies. White particles (bacterial) or translucent threads (fungal)
- Any color = oxidation. Discard immediately
- Particulates
- None visible to naked eye. Smooth liquid surface
- Possible white sediment at bottom if precipitated
- White, translucent, or floating particles throughout solution
- Particles mean contamination or precipitation. Not salvageable
- Opalescence
- Faint light scattering under direct light at 1–2mg/mL. Normal
- Persistent cloudiness that doesn't clear after 10 min agitation
- Turbidity increases over hours. Does not settle with time
- Transient opalescence is fine. Persistent cloudiness is not
- Storage Stability (28 days, 2–8°C)
- Remains clear with no visual change from day 1 to day 28
- Yellow tinge appears by day 7–14 if stored above 8°C
- Cloudiness or particles appear within 48–72 hours if contaminated
- Properly stored tesofensine should look identical on day 28 as day 1
- pH Range Impact
- Clear at pH 5.0–6.0. Slight turbidity below 4.5 or above 6.5
- Precipitation at pH extremes (below 3.5 or above 7.5)
- pH does not cause contamination. Only stability issues
- Match your reconstitution solution to pH 5.0–6.0 for best clarity