Our GS-441524 Certificate of Analysis: What Batch 20250512 Shows
Quick answer: What does this GS-441524 COA show?
The certificate of analysis (COA) for GS-441524 batch 20250512 reports identity compliance by HPLC and a purity result of 99.94%, above the certificate’s stated minimum specification of 98%. Water content (0.24%), loss on drying (0.22%), and residue on ignition (0.14%) are also reported within the stated limit of 1% or less.
This is batch-specific chemical quality information. A COA supports transparency and traceability, but it does not by itself confirm a cat’s diagnosis, determine a dose, guarantee treatment outcome, or replace veterinary supervision.
Why FipDr is publishing this certificate of analysis
When families are evaluating a GS-441524 source, trust should begin with information that can be inspected rather than broad promises. Publishing the certificate allows readers and veterinary professionals to review the reported identity, purity, dates, and basic quality-control measurements for the documented batch.
We are sharing the COA in its original document format, with commercially sensitive supplier details redacted. The analytical values and batch information remain visible so the document can be read and assessed directly.
GS-441524 COA: Batch 20250512 results
Product: GS-441524
CAS number: 1191237-69-0
Molecular formula: C12H13N5O4
Batch number: 20250512
Manufacturing date: 12 May 2025
Expiry date: 11 May 2027
Testing date: 12 May 2025
Appearance: White to off-white solid — complies
Identification: HPLC main-peak retention time matches the reference substance — complies
Purity: 99.94% (specification: at least 98%)
Water content: 0.24% (specification: no more than 1%)
Loss on drying: 0.22% (specification: no more than 1%)
Residue on ignition: 0.14% (specification: no more than 1%)
Image: Certificate of analysis for GS-441524 batch 20250512. The certificate is reproduced for transparency; supplier-identifying fields are redacted.
How to read the reported COA tests
HPLC identification
High-performance liquid chromatography (HPLC) compares how the sample behaves with a reference substance under defined analytical conditions. The certificate records the main-peak retention time as matching the reference, and marks identification as compliant.
Purity
The reported assay result is 99.94%. On this certificate, the acceptance criterion is 98% or higher, so the reported batch result exceeds the stated minimum by 1.94 percentage points.
Water content and loss on drying
Water content and loss on drying help describe moisture and volatile material in the sample. The reported values—0.24% and 0.22%—are each below the certificate’s limit of 1%.
Residue on ignition
Residue on ignition is a measure of non-volatile inorganic residue remaining after the sample is heated under the method’s conditions. The reported result is 0.14%, below the stated maximum of 1%.
What this certificate proves—and what it does not
The COA documents the tests and results reported for one identified GS-441524 batch. It provides a traceable batch number, manufacturing and expiry dates, chemical identity testing, purity, and selected material-quality measurements.
It should not be interpreted as a complete finished-product release package. The visible certificate does not report sterility, bacterial endotoxins, particulate matter, finished-vial concentration, container-closure integrity, or clinical efficacy. Those are different questions that require different tests and controls.
A COA is also not a veterinary prescription. Feline infectious peritonitis (FIP) can present in different forms, and diagnosis, product selection, route of administration, monitoring, and any treatment adjustment should be handled with a licensed veterinarian.
Why batch traceability matters for GS-441524
Batch traceability connects a physical material to a defined manufacturing and testing record. It makes quality discussions specific: instead of asking whether a product is “high purity” in general, a reader can ask which batch was tested, when it was manufactured, which method was used, and what result was recorded.
For cat owners, transparency is most useful when it is paired with veterinary oversight and follow-up monitoring. A certificate can inform source evaluation, while clinical decisions still depend on the individual cat.
What is GS-441524?
GS-441524 is a nucleoside analogue studied for its antiviral activity against feline infectious peritonitis virus. Peer-reviewed research includes experimental and naturally occurring FIP studies, but a batch COA and clinical evidence answer different questions: the COA concerns the reported chemical quality of a particular batch, while clinical studies concern treatment outcomes under defined study conditions.
FipDr does not present this certificate as proof that every cat will respond in the same way. Outcomes can vary with diagnostic certainty, disease form, clinical condition, treatment plan, adherence, and veterinary monitoring.
Frequently asked questions about the GS-441524 certificate of analysis
What is the reported purity of GS-441524 batch 20250512?
The certificate reports 99.94% purity. Its stated acceptance criterion is 98% or higher.
Does 99.94% purity mean the finished product is sterile?
No. Chemical purity and sterility are separate quality attributes. This visible certificate does not list a sterility or bacterial-endotoxin result.
Does a COA prove that GS-441524 will treat every FIP case?
No. A COA reports analytical results for a batch; it does not predict an individual cat’s response or replace diagnosis, prescribing, and monitoring by a veterinarian.
Why are parts of the certificate redacted?
Commercially sensitive supplier-identifying fields are obscured. The batch number, dates, specifications, test items, and results remain visible for review.
Can I use this COA to choose a dose?
No. The certificate is not a dosing document. Dosing and treatment decisions must be based on the cat’s diagnosis, weight, disease presentation, clinical status, and the advice of a licensed veterinarian.
Our transparency commitment
Publishing batch documentation is one part of responsible communication. We will continue to separate analytical facts from clinical claims, state the limits of each document, and encourage families to make treatment decisions with qualified veterinary support.
If you need help understanding which questions to ask about FIP diagnosis, monitoring, or product documentation, contact FipDr and involve your veterinarian from the beginning.
References
Veterinary disclaimer
This page is provided for quality-transparency and educational purposes. It is not veterinary advice, a diagnosis, a prescription, or a guarantee of outcome. Always consult a licensed veterinarian regarding suspected FIP and any treatment or monitoring plan.
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