Description

Repirinast-D4 is a deuterated analog of the anti-allergic pharmaceutical compound Repirinast, specifically labeled with four deuterium atoms. This stable isotope-labeled standard is essential for ensuring accuracy and reliability in quantitative analytical methods, particularly in pharmacokinetic and metabolic studies. It is a critical tool for researchers and quality control laboratories in the pharmaceutical and biotechnology sectors who require precise internal standards for mass spectrometry.

Application

• Used as an internal standard for the accurate quantification of Repirinast in biological matrices via LC-MS/MS.
• Critical for conducting pharmacokinetic (PK) and bioequivalence studies in drug development.
• Enables precise metabolite profiling and drug metabolism studies (DMPK).
• Supports quality control and assurance in pharmaceutical manufacturing of Repirinast-based products.
• Facilitates clinical research and therapeutic drug monitoring related to allergic disorders.
• Applied in forensic and anti-doping analysis for definitive identification and measurement.

Basic Information

Product Name	Repirinast-D4
CAS No.	1329836-95-4
Molecular Formula	C20H17D4N3O4
Molecular Weight	363.41 g/mol (approximate)
Synonyms	5,6,7,8-Tetradeutero-Repirinast; Repirinast (phenyl-d4); 3-Methyl-1-phenyl-5-pyrazolyl 5,6,7,8-tetradeutero-9-oxo-2-propy1H,5H-[1]benzopyrano[2,3-d]pyrimidine-4-carboxylate; 9-Oxo-2-propyl-5,6,7,8-tetradeutero-1H,5H-[1]benzopyrano[2,3-d]pyrimidine-4-carboxylic Acid 3-Methyl-1-phenyl-1H-pyrazol-5-yl Ester-d4; Repirinast-d4 Internal Standard; Repirinast (D4).
EINECS	Contact for details

Quality Control

Our Repirinast-D4 is manufactured under strict quality systems to ensure the high chemical and isotopic purity required for analytical applications. Each batch undergoes rigorous testing, including HPLC for chemical purity and NMR/MS for isotopic enrichment verification. Certificates of Analysis (COA) detailing batch-specific results are provided to guarantee traceability and compliance with your research or quality standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C or as indicated on the label or COA. 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 solid
Identification (HPLC)	Conforms to reference standard
Identification (MS)	Conforms to reference standard
Purity (HPLC)	≥ 98.0%
Isotopic Purity (D-enrichment)	≥ 98.0 atom % D
Water Content (KF)	≤ 0.5%
Residual Solvents (GC)	Complies with ICH guidelines

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