Glycerol Phenylbutyrate
A taste-masked, liquid prodrug of phenylbutyrate for improved long-term urea cycle disorder treatment.

A taste-masked, low-sodium phenylbutyrate prodrug
Glycerol Phenylbutyrate is a taste-masked, liquid prodrug of phenylbutyrate developed to improve the long-term treatment experience for patients with urea cycle disorders. Salt forms of phenylbutyrate can carry a strong taste and a high sodium load; glycerol phenylbutyrate addresses both by delivering three phenylbutyrate units on a glycerol backbone as a nearly odourless, tasteless oil.
After administration it is gradually hydrolysed to release phenylbutyrate, providing sustained nitrogen-scavenging activity and steadier ammonia control — which supports better adherence, especially in paediatric and long-term patients.
How it works
Slow hydrolysis
The prodrug is slowly hydrolysed in the gut to release phenylbutyrate.
Sustained scavenging
Provides sustained, gradual nitrogen-scavenging activity.
Better compliance
Low taste and reduced sodium load improve compliance.
Key applications
Long-term UCD management
Sustained nitrogen-scavenging therapy for urea cycle disorders.
Paediatric formulations
Compliance-sensitive and paediatric formulations.
Steady ammonia control
Steadier control of blood ammonia over time.
Product specifications (typical)
| CAS No. | 611168-24-2 |
|---|---|
| Molecular Formula | C33H38O6 |
| Molecular Weight | ≈ 530.66 g/mol |
| Appearance | Clear to pale-yellow oily liquid |
| Assay / Purity | As per agreed specification |
| Category | Metabolic disorder API (prodrug) |
Specifications are typical and can be tailored to agreed customer requirements. Full COA, SDS and regulatory documentation provided.
Quality & compliance
- Specialty-grade manufacturing with tight specifications
- Full COA, SDS and regulatory documentation
Packaging & storage
Supplied in suitable pharma-grade liquid packaging. Store cool and dry, protected from light; keep containers tightly closed.
Why choose Narmada Organics
Produced to tight specifications for compliance-focused formulations.
Scalable, reliable supply for development and commercial needs.
Complete COA, SDS and specifications with every shipment.
Frequently asked questions
How is Glycerol Phenylbutyrate different from Sodium Phenylbutyrate?
It is a taste-masked liquid prodrug with lower sodium load and a gradual release of phenylbutyrate — improving compliance, especially for paediatric and long-term patients.
Is it a liquid or a solid?
It is a clear to pale-yellow oily liquid.
What is it used for?
Long-term management of urea cycle disorders (sustained nitrogen scavenging).
Do you provide documentation and bulk supply?
Yes — full COA, SDS and specifications with dependable, scalable supply.
Need Glycerol Phenylbutyrate for your formulation?
Get specifications, COA and pricing for bulk and export supply. Our team responds within one business day.