Description

(Dhqd)2Pyr CAS NO 149725-81-5 is a high-purity chiral ligand widely used in asymmetric synthesis. Its primary value lies in enabling highly enantioselective transformations, which are critical for producing single-isomer pharmaceutical intermediates and fine chemicals. This compound is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-performance catalysts.

Application

• As a chiral ligand in asymmetric hydrogenation reactions for pharmaceutical API synthesis.
• Catalyst component in the enantioselective synthesis of natural products and fragrances.
• Key reagent for producing chiral intermediates in agrochemical active ingredient development.
• Use in academic and industrial research for developing new asymmetric catalytic methodologies.
• Component in catalyst systems for the synthesis of chiral amino acids and alcohols.
• Employed in the fine chemical industry for the manufacture of high-value specialty chemicals.

Basic Information

Product Name	(Dhqd)2Pyr
CAS No.	149725-81-5
Molecular Formula	C43H50N6O4
Molecular Weight	714.91 g/mol
Synonyms	1,4-Bis(9-O-dihydroquinidinyl)phthalazine; (DHQD)2PHAL; Bis(dihydroquinidine)phthalazine; (DHQD)2PYR; Dihydroquinidine Phthalazine Dimer; (DHQD)2Pyr; (8α,9R)-10,11-Dihydro-6',9-methano-9H-quinolino[2',1':2,3][1,3]oxazocino[5,4-a]isoquinoline, 9-(6-methoxy-4-quinolyl)-16-(1-methyl-2-pyrrolidinyl)-; (DHQD)2PYR PHASE TRANSFER CATALYST
EINECS	Contact for details

Quality Control

Our (Dhqd)2Pyr is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, chiral purity, and impurity profiles. We adhere to relevant industry standards for fine chemicals and can provide material suitable for research and cGMP manufacturing applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere or in a desiccator after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 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.