Description

Benzoic Acid, 4-(Methylamino)-, Labeled With Deuterium (9Ci) is a stable isotope-labeled analog of 4-(Methylamino)benzoic acid, where nine hydrogen atoms are replaced with deuterium. This high-purity labeled compound is essential for use as an internal standard in quantitative mass spectrometry, ensuring unparalleled accuracy and reproducibility in analytical measurements. It is primarily required by researchers and quality control laboratories in the pharmaceutical, agrochemical, and advanced material science sectors for drug metabolism studies, pharmacokinetic research, and trace-level impurity profiling.

Application

• Internal Standard for LC-MS/MS: Critical for the precise quantification of 4-(Methylamino)benzoic acid and related metabolites in complex biological matrices like plasma, urine, and tissue homogenates.
• Pharmaceutical R&D: Used in drug metabolism and pharmacokinetics (DMPK) studies to track the absorption, distribution, metabolism, and excretion (ADME) of new chemical entities.
• Metabolomics Research: Enables accurate relative and absolute quantification in pathway analysis and biomarker discovery.
• Environmental and Agrochemical Analysis: Facilitates the trace analysis of pesticide degradation products or environmental contaminants.
• Quality Control & Impurity Profiling: Serves as a reference standard in the GMP-compliant analysis of active pharmaceutical ingredients (APIs) to identify and quantify process-related impurities.
• Synthetic Intermediate: Can be used in the synthesis of more complex deuterated molecules for specialized research applications.

Basic Information

Product Name	Benzoic Acid, 4-(Methylamino)-, Labeled With Deuterium (9Ci)
CAS No.	937737-33-2
Molecular Formula	C9D9NO2
Molecular Weight	171.23 g/mol (for C9D9NO2)
Synonyms	4-(Methyl-d3-amino)-benzoic-d5-acid; Deuteronated 4-(Methylamino)benzoic Acid; 4-(N-Methyl-d3-amino)benzoic-d5 Acid; 4-(Methylamino)benzoic Acid-d9; p-(Methylamino)benzoic Acid-d9; 4-(Methyl-d3-amino)d5-benzoic Acid; Benzoic-d5 acid, 4-[(methyl-d3)amino]-
EINECS	Contact for details

Quality Control

Every batch of our deuterium-labeled compounds is produced and analyzed under strict quality protocols to ensure high isotopic purity and chemical purity, which are critical for reliable analytical results. We provide comprehensive Certificates of Analysis (COA) detailing specifications for isotopic enrichment (atom % D), chemical purity (by HPLC), and identity confirmation (by NMR and MS). Our quality system supports compliance with relevant research and development standards.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. For long-term storage, consider keeping the product at 2-8°C to ensure maximum stability.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (NMR)	Conforms to structure
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (Atom % D)	≥ 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.