Description

4-Phenylbutyric-2,2,3,3-D4 Acid is a deuterated analog of 4-phenylbutyric acid, a compound of significant interest in pharmaceutical and biochemical research. This stable isotope-labeled version is essential for use as an internal standard in quantitative mass spectrometry, ensuring precise and accurate analytical measurements. It is primarily utilized by researchers and manufacturers in the fields of drug metabolism and pharmacokinetics (DMPK), proteomics, and analytical chemistry.

Application

• Internal Standard for LC-MS/MS: Critical for the accurate quantification of 4-phenylbutyric acid and related metabolites in complex biological matrices like plasma, serum, and tissue homogenates.
• Drug Metabolism & Pharmacokinetics (DMPK): Used in tracer studies to investigate the absorption, distribution, metabolism, and excretion (ADME) profiles of pharmaceutical compounds.
• Proteomic & Metabolomic Research: Enables precise relative and absolute quantification in stable isotope labeling workflows for biomarker discovery and pathway analysis.
• Quality Control & Method Validation: Serves as a certified reference material (CRM) for validating analytical methods in GLP/GMP-compliant laboratories.
• Chemical Synthesis Intermediate: Acts as a deuterium-labeled building block for the synthesis of more complex labeled compounds for research.

Basic Information

Product Name	4-Phenylbutyric-2,2,3,3-D4 Acid
CAS No.	461391-24-2
Molecular Formula	C10H8D4O2
Molecular Weight	168.22 g/mol (for deuterated form)
Synonyms	4-Phenylbutyric Acid-d4; 4-Phenyl[2,2,3,3-2H4]butyric Acid; Benzenebutanoic-2,2,3,3-d4 Acid; γ-Phenylbutyric Acid-d4; 4-PBA-d4; Phenylbutyrate-d4; (2,2,3,3-D4)-4-Phenylbutanoic Acid; 4-Phenylbutyric Acid (D4, 98%)
EINECS	Contact for details

Quality Control

Every batch of our 4-Phenylbutyric-2,2,3,3-D4 Acid is manufactured and analyzed under strict quality systems. We guarantee high chemical purity and isotopic enrichment, typically ≥98% (chemical purity) and ≥98 atom % D, verified by advanced techniques including NMR and Mass Spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, isotopic abundance, and impurity profiles is provided with each shipment to support your research and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed in a desiccated environment to maintain stability and purity. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (Atom % D)	≥ 98.0%
Deuterium Content (NMR)	≥ 98% at designated positions
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.