Description

Zilpaterol-13C3 Hydrochloride is a stable isotope-labeled analog of the β-adrenergic agonist zilpaterol, specifically labeled with three carbon-13 atoms. This compound is essential for use as an internal standard in quantitative mass spectrometry, ensuring the highest accuracy and reliability in analytical results. It is a critical tool for researchers and quality control laboratories in the pharmaceutical, veterinary medicine, and food safety sectors, where precise measurement of zilpaterol residues or pharmacokinetics is required.

Application

• Mass Spectrometry Internal Standard: Primary use as a quantitative reference standard in LC-MS/MS and GC-MS analysis for zilpaterol.
• Pharmaceutical Research: Used in pharmacokinetic, metabolic, and bioequivalence studies of zilpaterol-containing formulations.
• Veterinary Drug Analysis: Critical for the accurate detection and quantification of zilpaterol residues in animal tissues and biological fluids for regulatory compliance.
• Food Safety Testing: Employed in methods to monitor for unauthorized use of zilpaterol as a growth promoter in food-producing animals.
• Method Development & Validation: Serves as a key component in developing and validating robust analytical methods in accredited laboratories.
• Quality Control (QC) Laboratories: Used for routine assay and impurity testing of zilpaterol API and finished products to ensure batch-to-batch consistency.

Basic Information

Product Name	Zilpaterol-13C3 Hydrochloride
CAS No.	1613439-55-6
Molecular Formula	C1413C3H20N4O3•HCl
Molecular Weight	~ 365.80 g/mol (for unlabeled form: 362.84)
Synonyms	Zilpaterol-13C3 HCl; Zilpaterol (phenyl-13C6) Hydrochloride; 4-[[(1R)-1-Methyl-2-(4-methoxyphenyl)ethyl]amino]-1H-imidazol-2-yl]methanol-13C3 Hydrochloride; Zilmax-13C3 Hydrochloride; Zilpaterol D3 Hydrochloride (common misnomer for 13C3); Stable Isotope Labeled Zilpaterol HCl; Internal Standard for Zilpaterol.
EINECS	Contact for details

Quality Control

Our Zilpaterol-13C3 Hydrochloride is manufactured under controlled conditions and undergoes rigorous analytical testing. Each batch is characterized to ensure high chemical and isotopic purity, critical for its function as an internal standard. Certificates of Analysis (COA) are provided, detailing results for assay, isotopic enrichment, and related substances by HPLC. We support compliance with GMP/GLP principles for research and regulatory applications.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) or as indicated on the label. This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (MS)	Conforms to structure
Assay (HPLC)	≥ 98.0% (on anhydrous basis)
Isotopic Enrichment	≥ 99 atom % 13C
Chemical Purity (HPLC)	≥ 98.5%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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