Description

Rac Mono(2-Ethyl-5-Oxohexyl) Phthalate-D4 CAS NO 679789-44-7 is a deuterated isotopologue of a key phthalate monoester metabolite, specifically designed for use as an internal standard in advanced analytical chemistry. This compound is essential for ensuring the accuracy and reliability of quantitative analyses, particularly in trace-level detection and method validation. It is primarily utilized by analytical laboratories and research institutions in the environmental monitoring, toxicology, and pharmaceutical development sectors where precise measurement of phthalate exposure or degradation is critical.

Application

• Internal Standard for LC-MS/MS: Critical for the accurate quantification of phthalate metabolites in human biomonitoring studies (e.g., urine, serum) to assess environmental exposure.
• Metabolite Reference Standard: Used in pharmacokinetic and toxicokinetic research to study the absorption, distribution, metabolism, and excretion (ADME) of phthalate plasticizers.
• Method Development & Validation: Serves as a deuterated surrogate to correct for analyte loss during sample preparation and matrix effects in instrumental analysis.
• Environmental Analysis: Employed in tracing and quantifying phthalate ester degradation products in water, soil, and sediment samples.
• Quality Control in Manufacturing: Used to monitor potential phthalate contamination or migration in products where high purity is mandated, such as medical devices or food packaging materials.
• Forensic Toxicology: Aids in the precise identification and measurement of phthalate biomarkers in complex biological matrices.

Basic Information

Product Name	Rac Mono(2-Ethyl-5-Oxohexyl) Phthalate-D4
CAS No.	679789-44-7
Molecular Formula	C16H18D4O5
Molecular Weight	294.36 g/mol (approx.)
Synonyms	Mono(2-ethyl-5-oxohexyl) phthalate-d4; MEHHP-d4; 5-Oxo-MEHP-d4; rac Mono(2-ethyl-5-oxohexyl) phthalate-3,4,5,6-d4; Deuterated MEHHP; Phthalic acid mono(2-ethyl-5-oxohexyl) ester-d4; 1,2-Benzenedicarboxylic acid, mono(2-ethyl-5-oxohexyl) ester-d4; MEHHP (deuterated internal standard)
EINECS	Contact for details

Quality Control

Every batch of Rac Mono(2-Ethyl-5-Oxohexyl) Phthalate-D4 is manufactured and analyzed under strict quality management protocols to ensure the high chemical purity and isotopic enrichment required for analytical standards. Our products undergo rigorous quality testing, including chromatographic purity and isotopic abundance verification, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing lot-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store at -20°C or below. The product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to maintain integrity. Allow the sealed vial to equilibrate to room temperature before opening to prevent condensation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (D-content)	≥ 98 atom % D
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines

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