Description

4-Methoxybenzoic-D7 Acid is a deuterium-labeled isotopologue of 4-methoxybenzoic acid, where seven hydrogen atoms are replaced with deuterium. This high-purity stable isotope-labeled compound is essential for use as an internal standard in quantitative mass spectrometry, ensuring unparalleled accuracy and reliability in analytical measurements. It is primarily utilized by analytical laboratories, pharmaceutical R&D departments, and contract research organizations (CROs) engaged in method development, pharmacokinetic studies, and metabolite identification.

Application

• Internal Standard for LC-MS/MS: Critical for the precise quantification of 4-methoxybenzoic acid and related metabolites in complex biological matrices like plasma, urine, and tissue homogenates.
• Pharmaceutical Research & Development: Used in drug metabolism and pharmacokinetics (DMPK) studies to track the absorption, distribution, metabolism, and excretion (ADME) of parent compounds.
• Biomarker Analysis: Enables accurate measurement of endogenous or exogenous biomarkers in clinical and preclinical research.
• Environmental and Food Safety Testing: Supports the detection and quantification of trace analytes in environmental samples and food products.
• Stable Isotope Dilution Assays: Serves as a key component in assays requiring the highest level of precision to minimize matrix effects and ion suppression.
• Chemical Reference Material: Acts as a certified reference material (CRM) for instrument calibration and method validation in accredited laboratories.

Basic Information

Product Name	4-Methoxybenzoic-D7 Acid
CAS No.	1219803-08-3
Molecular Formula	C8D7HO3
Molecular Weight	171.21 g/mol
Synonyms	p-Anisic-d7 acid; 4-Methoxybenzoic-d7 acid; Deuterated p-Anisic Acid; [D7]-4-Methoxybenzoic Acid; (2,3,5,6-D4, Methoxy-D3)benzoic Acid; Benzoic-2,3,5,6-d4 acid, 4-(methoxy-d3)-; 4-(Trideuteriomethoxy)benzoic-2,3,5,6-d4 acid
EINECS	Contact for details

Quality Control

Every batch of our 4-Methoxybenzoic-D7 Acid is manufactured and analyzed under strict quality management systems. We guarantee high chemical purity and isotopic enrichment, verified by advanced analytical techniques including NMR, HPLC, and Mass Spectrometry. Certificates of Analysis (COA) detailing batch-specific purity, isotopic purity (atom % D), and analytical data are provided to ensure full traceability and compliance with your research or quality standards.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity	≥ 98.0 atom % D
Chemical Purity (by NMR)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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