Description

5-[2-Ethoxy-5-[4-(Trideuteriomethyl)Piperazin-1-Yl]Sulfonylphenyl]-1-Methyl-3-Propyl-4H-Pyrazolo[4,3-D]Pyrimidine-7-Thione is a deuterated organic compound of significant interest in advanced pharmaceutical research and development. This molecule serves as a critical building block or analytical reference standard for the synthesis and study of deuterated drug candidates, leveraging the kinetic isotope effect. It is primarily sought by pharmaceutical R&D laboratories, contract research organizations (CROs), and fine chemical manufacturers engaged in developing novel therapeutics with improved metabolic profiles.

Application

• Pharmaceutical Intermediate: Key synthon in the synthesis of deuterium-labeled active pharmaceutical ingredients (APIs) targeting enhanced pharmacokinetics.
• Metabolic Studies: Used as an internal standard or tracer in mass spectrometry-based drug metabolism and pharmacokinetics (DMPK) studies.
• Medicinal Chemistry Research: Enables structure-activity relationship (SAR) studies by investigating the impact of deuterium substitution on biological activity.
• Reference Standard: Serves as a high-purity certified reference material (CRM) for quality control and analytical method development.
• Isotope Labeling: Facilitates the production of deuterated analogs of lead compounds for patent protection and new drug development.

Basic Information

Product Name	5-[2-Ethoxy-5-[4-(Trideuteriomethyl)Piperazin-1-Yl]Sulfonylphenyl]-1-Methyl-3-Propyl-4H-Pyrazolo[4,3-D]Pyrimidine-7-Thione
CAS No.	1216671-11-2
Molecular Formula	C22H28D3N5O3S2
Molecular Weight	474.62 g/mol
Synonyms	Deuterated Tadalafil Impurity/Intermediate; 5-[2-Ethoxy-5-[(4-(trideuteriomethyl)-1-piperazinyl)sulfonyl]phenyl]-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidine-7-thione; Deuterium Labeled PDE5 Inhibitor Intermediate; (6R,12aR)-2,3,6,7,12,12a-Hexahydro-2-methyl-6-(3,4-methylenedioxyphenyl)pyrazino[2',1':1,6]pyrido[3,4-b]indole-1,4-dione-d3 (related analog); CD3-Tadalafil related compound; Pyrazolopyrimidinethione deuterated derivative.
EINECS	Contact for details

Quality Control

Our production of this deuterated compound adheres to strict quality protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, NMR (¹H and ¹³C), and mass spectrometry to confirm identity, chemical purity, and isotopic enrichment. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your regulatory and research requirements.

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 the container sealed to protect from moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Isotopic Purity (Deuterium Enrichment)	≥ 98 atom % D
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

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