Description

3,4-Dimethoxy[7-13C]-Benzoic Acid is a stable isotope-labeled derivative of 3,4-dimethoxybenzoic acid, where the carbon-13 isotope is specifically incorporated at the 7-position of the benzoic acid ring. This precise labeling is critical for applications requiring high sensitivity and accurate quantification, such as mass spectrometry-based analysis. It is an essential tool for researchers and quality control laboratories in the pharmaceutical, agrochemical, and advanced material sectors who require internal standards for method development and validation.

Application

• Internal Standard for Quantitative Analysis: Used as a certified reference material in LC-MS and GC-MS for the accurate quantification of related compounds in complex matrices.
• Metabolic Pathway Tracing: Serves as a tracer in pharmacokinetic, pharmacodynamic, and metabolic flux studies within pharmaceutical R&D.
• Pharmaceutical Impurity Profiling: Employed in the development and validation of analytical methods to identify and quantify process-related impurities and degradants.
• Agrochemical Research: Acts as a labeled intermediate or standard in the synthesis and environmental fate studies of herbicides and fungicides.
• NMR Spectroscopy: Provides a non-radioactive tracer for structural elucidation and reaction mechanism studies using carbon-13 NMR.
• Isotope Dilution Mass Spectrometry (IDMS): A key component in high-precision analytical techniques for clinical diagnostics and environmental testing.

Basic Information

Product Name	3,4-Dimethoxy[7-13C]-Benzoic Acid
CAS No.	90140-57-1
Molecular Formula	C9H1013CO4
Molecular Weight	~183.17 g/mol (based on 13C at position 7)
Synonyms	3,4-Dimethoxybenzoic-7-13C Acid; Veratric-7-13C Acid; 3,4-Dimethoxy[7-13C]benzoic Acid; 3,4-Dimethoxy[carbonyl-13C]benzoic Acid (if labeled at carbonyl); 4-13C-Veratric Acid; [7-13C]-3,4-Dimethoxybenzoic Acid; Isotopically Labeled Veratric Acid; 90140-57-1 (CAS Index Name)
EINECS	Contact for details

Quality Control

Every batch of 3,4-Dimethoxy[7-13C]-Benzoic Acid is manufactured and analyzed under strict quality management systems. We provide comprehensive Certificates of Analysis (COA) detailing isotopic purity (atom % 13C), chemical purity (by HPLC), and identity confirmation (by NMR and MS). Our quality commitment ensures the material meets the stringent requirements for use as a certified reference standard in regulated environments, supporting compliance with GLP and ISO 17025 standards.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. This compound is hygroscopic (moisture-sensitive); prolonged exposure to atmospheric humidity should be avoided to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure and labeling position
Purity (HPLC)	≥98.0%
Isotopic Purity (Atom % 13C)	≥99% at position 7
Isotopic Enrichment (MS)	≥98% M+1
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.