Description

Methyl Paraben-(Ring-13C6) CAS NO 1581694-95-2 is a stable isotope-labeled analog of the common preservative methylparaben, where the aromatic ring is uniformly enriched with carbon-13. This compound is essential as an internal standard for precise quantitative analysis in mass spectrometry, ensuring accuracy and reliability in complex matrices. It is primarily required by analytical laboratories, pharmaceutical R&D teams, and food safety testing facilities for method development, validation, and regulatory compliance testing.

Application

• Internal Standard for LC-MS/MS and GC-MS quantification of methylparaben and related parabens.
• Metabolic and pharmacokinetic studies in pharmaceutical research using isotope dilution mass spectrometry.
• Quality control and method validation in the analysis of preservatives in cosmetics and personal care products.
• Food safety testing for accurate measurement of paraben preservative residues.
• Environmental monitoring and trace analysis of parabens in water and soil samples.
• Use in clinical diagnostics for biomarker analysis requiring high-precision isotope-labeled standards.

Basic Information

Product Name	Methyl Paraben-(Ring-13C6)
CAS No.	1581694-95-2
Molecular Formula	C13C6H8O3
Molecular Weight	~158.13 (based on 13C6 enrichment)
Synonyms	Methyl 4-hydroxybenzoate-(Ring-13C6); Methyl paraben-13C6; 4-Hydroxybenzoic acid methyl ester-(Ring-13C6); Methyl p-hydroxybenzoate-13C6; Methyl Chemoselect-13C6 (paraben); 13C6-Methylparaben; Methyl Paraben (13C6, Ring); Isotopically Labeled Methyl Paraben
EINECS	Contact for details

Quality Control

Our Methyl Paraben-(Ring-13C6) is manufactured under strict quality control protocols to ensure the highest isotopic purity and chemical integrity. Each batch is analyzed by advanced spectroscopic and chromatographic methods, including NMR and HPLC-MS, to confirm isotopic enrichment and chemical purity. A comprehensive Certificate of Analysis (COA) detailing isotopic purity, chemical purity, and solvent content is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥98%
Isotopic Purity (13C)	≥99 atom % 13C (on the labeled ring)
Chemical Purity	≥95%
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.