20mg/10ml GS-441524 Injection 2mg/mL Fine-Titration Low-Volume Sealed Vial
Product Introduction
A cat's weight does not hold still across a 12-week course. Kittens grow, adults drop a little after a rough patch, and the figure on the scale at the next visit rarely matches the last one.A vial that only moves in big steps forces whoever draws it up to round, and rounding is where accuracy goes first. This 20mg/10ml presentation works out to 2mg/mL, which keeps each kilogram-based adjustment fine enough to follow a weight chart week by week.
The active material is GS-441524 at 99%+ purity, the plasma metabolite that carries the antiviral effect once RDV is metabolised in the body. It targets the viral RNA-dependent RNA polymerase, inserts into the growing RNA strand, and stops that strand from extending, which interrupts replication inside white blood cells. The solution is filled into amber glass and sealed under sterile conditions; every vial is marked with a lot number that matches its assay sheet.
Technical Parameters:
| Item | Details |
|---|---|
| Product Name | GS-441524 Injection |
| Active Ingredient | GS-441524 (Analytical Grade) |
| Specification | 20mg/10ml (2mg/mL) |
| Purity | 99%+ (HPLC verified) |
| Grade | Pharmaceutical Standard |
| Storage | 2°C – 8°C, refrigerated |
| Packaging | Sealed amber glass vial |
| Shelf Life | 12 months |
| Route | Subcutaneous (SC) |
Functional Advantages & Applications
Small-subject accuracy: kittens under 1.5kg are awkward to dose from a concentrated vial. At 2mg/mL the drawn volume lands in a range a 1mL syringe can read without guesswork.
One lot per course where possible: fewer vial changes mid-cycle means fewer shifts in concentration and less chance of mixing two fills.
Light protection: amber glass plus a crimped seal keeps the solution away from photo-degradation during storage and daily handling.
Clean draw: the fill is clear and low viscosity, so it pulls through a 25G needle without foaming, which matters when a small volume has to be exact.
Typical uses include kittens and adolescents whose weight climbs during the cycle, foster setups tracking several cats at different weights, taper adjustments at the end of a course, and clinics that dose strictly by measured volume rather than by eye.
Volume protocol follows the standard sheet: 0.4mL/kg body weight plus 0.1mL dead-space residue for wet FIP, 0.7mL/kg plus 0.1mL for neurological or ocular cases. At this concentration those figures deliver 0.8mg/kg and 1.4mg/kg respectively. Switching between vial strengths changes the milligram load, so confirm the conversion against the prescribing veterinarian's written protocol first.
Storage & Safety
Keep between 2°C and 8°C. Do not freeze; freezing causes the active ingredient to precipitate and the effective concentration drops even after thawing. Store in the original carton away from direct light. Wipe the septum with alcohol before every draw and discard the vial if the solution turns cloudy or shows colour.
