Description

Phthalic-D4 Anhydride is a deuterium-labeled isotopologue of phthalic anhydride, a critical intermediate in organic synthesis and analytical chemistry. Its primary value lies in its use as an internal standard or tracer in mass spectrometry and NMR spectroscopy, enabling precise quantitative analysis and metabolic pathway studies. This high-purity labeled compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require accurate, interference-free analytical data.

Application

• Internal standard for the quantitative analysis of phthalic anhydride and related compounds via Gas Chromatography-Mass Spectrometry (GC-MS) and Liquid Chromatography-Mass Spectrometry (LC-MS).
• Tracer compound in metabolic and pharmacokinetic studies within pharmaceutical research and development.
• Deuterated precursor for the synthesis of labeled polymers, plasticizers, and dyes for research purposes.
• Critical reagent in NMR spectroscopy as a chemical shift reference or for mechanistic studies.
• Use in environmental testing to track and quantify phthalate derivatives.
• Stable isotope labeling for advanced material science research.

Basic Information

Product Name	Phthalic-D4 Anhydride
CAS No.	75935-32-9
Molecular Formula	C8D4O3
Molecular Weight	152.15 g/mol
Synonyms	Phthalic Anhydride-d4; Deuterated Phthalic Anhydride; 1,2-Benzenedicarboxylic-d4 Anhydride; Isobenzofuran-1,3-dione-d4; Phthalic Acid-d4 Anhydride; PA-d4; [D4]-Phthalic Anhydride
EINECS	Contact for details

Quality Control

Our Phthalic-D4 Anhydride is manufactured under strict quality control protocols to ensure high isotopic purity and chemical integrity, suitable for sensitive analytical applications. Each batch is analyzed to confirm deuterium incorporation and the absence of unlabeled species. A comprehensive Certificate of Analysis (COA) detailing isotopic purity, chemical purity, and analytical methods (NMR, MS) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Isotopic Purity (D-content)	≥ 98 atom % D
Chemical Purity (HPLC)	≥ 98.0%
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.