Description

2,5-Pyrazinedicarboxylic Acid Dihydrate is a high-purity, crystalline organic acid derivative of the pyrazine heterocycle. This compound serves as a critical pharmaceutical intermediate and versatile building block for synthesizing complex molecules, including active pharmaceutical ingredients (APIs) and advanced materials. It is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Ligand Synthesis: Used to create chelating agents and ligands for catalysis and metal-organic frameworks (MOFs).
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Monomer for the production of specialty polyamides and polyimides with high thermal stability.
• Chemical Research: Versatile reagent in organic synthesis for constructing pyrazine-based heterocycles and fine chemicals.
• Coordination Chemistry: Starting material for synthesizing metal complexes used in materials science.

Basic Information

Product Name	2,5-Pyrazinedicarboxylic Acid Dihydrate
CAS No.	205692-63-3
Molecular Formula	C6H6N2O4 • 2H2O
Molecular Weight	200.14 g/mol (Anhydrous basis: 170.12 g/mol)
Synonyms	Pyrazine-2,5-dicarboxylic Acid Dihydrate; 2,5-Dicarboxypyrazine Dihydrate; 2,5-Pyrazinedicarboxylic Acid Hydrate; 2,5-Pyrazinedicarboxylic Acid Dihydrate; NSC 403796 Dihydrate; UNII-8VZU8B8WQ9 (dihydrate form)
EINECS	Contact for details

Quality Control

Our 2,5-Pyrazinedicarboxylic Acid Dihydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and research applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Water Content (KF)	15.0% - 18.0% (Theoretical for dihydrate: ~17.6%)
Loss on Drying	≤ 0.5% (on anhydrous basis)
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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