Description

4-(Ethyl-1-13C)Benzoic Acid is a stable isotope-labeled analog of benzoic acid, where a carbon-13 atom is specifically incorporated into the ethyl substituent. This precise labeling is critical for applications requiring high sensitivity and accurate tracking in analytical and metabolic studies. It is an essential building block for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced material sectors who require isotopically labeled compounds for internal standards, tracer studies, and NMR spectroscopy.

Application

• Pharmaceutical Research & Development: Used as an internal standard in Liquid Chromatography-Mass Spectrometry (LC-MS) and Gas Chromatography-Mass Spectrometry (GC-MS) for the quantitative analysis of drugs and metabolites.
• Metabolic Pathway Tracing: Serves as a crucial tracer in pharmacokinetic and drug metabolism studies utilizing 13C-NMR or mass spectrometry to elucidate metabolic pathways.
• Synthesis of Labeled Compounds: Acts as a key synthetic intermediate for preparing more complex 13C-labeled molecules for research and diagnostic applications.
• Environmental & Food Safety Analysis: Employed in isotope dilution mass spectrometry methods to ensure accurate quantification of benzoic acid and related compounds in complex matrices.
• Agrochemical Research: Used in the development and analysis of labeled pesticides or herbicides to study their environmental fate and degradation.

Basic Information

Item	Detail
Product Name	4-(Ethyl-1-13C)Benzoic Acid
CAS No.	286367-70-2
Molecular Formula	C9H10O2 (with 13C at specified position)
Molecular Weight	~152.18 g/mol (13C-adjusted)
Synonyms	4-Ethylbenzoic-α-13C Acid; p-Ethylbenzoic Acid-α-13C; Benzoic Acid, 4-ethyl- (ethyl-1-13C); 13C Labeled 4-Ethylbenzoic Acid; 4-(13C)Ethylbenzoic Acid; [1-13C]Ethyl-4-benzoic Acid; p-(Ethyl-1-13C)Benzoic Acid
EINECS	Contact for details

Quality Control

Every batch of our 4-(Ethyl-1-13C)Benzoic Acid is produced and analyzed under strict quality management protocols. We guarantee high chemical and isotopic purity, with specifications typically meeting or exceeding the requirements for research and analytical applications. Certificates of Analysis (COA) are provided with each shipment, detailing key parameters such as assay (HPLC), isotopic enrichment (NMR/MS), and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, well-ventilated area. Keep away from strong oxidizers and bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Enrichment	≥ 99 atom % 13C
Chemical Purity (NMR)	Conforms
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.