2H-pyran-2-one
$150.00
CAS No.: 504-31-4
Catalog No.: 195054
Purity: 95%
MF: C5H4O2
MW: 96.085
Storage: 2-8 degree Celsius
SMILES: O1C(C=CC=C1)=O
Catalog No.: 195054
Purity: 95%
MF: C5H4O2
MW: 96.085
Storage: 2-8 degree Celsius
SMILES: O1C(C=CC=C1)=O
2H-pyran-2-one; CAS No.: 504-31-4; 2H-pyran-2-one. PROPERTIES: 2H-pyran-2-one appears as a colorless to pale yellow liquid with a slight acidic odor. Its molecular formula is C5H4O2, corresponding to a molecular weight of approximately 96.08 g/mol. The compound exhibits a boiling point around 120-122 C at 760 mmHg and a density of about 1.1 g/cm? at 25 C. It demonstrates moderate solubility in water and is miscible with common organic solvents such as ethanol, acetone, and diethyl ether. The substance is sensitive to bases and nucleophiles, which may cause ring-opening reactions. Proper storage requires keeping it in a tightly sealed, amber glass container in a cool, dry location away from direct sunlight and heat sources. The temperature should be maintained below 10 C if possible. Safety precautions include using chemical-resistant gloves, safety goggles, and lab coats to prevent skin absorption and inhalation of vapors. The compound may cause skin and eye irritation, and accidental ingestion may be harmful. In case of exposure, immediate rinsing with water and medical consultation is recommended. APPLICATIONS: 2H-pyran-2-one serves as a versatile intermediate in organic synthesis, particularly valuable in the preparation of pyran derivatives used in pharmaceuticals and agrochemicals. Its lactone structure enables participation in ring-opening polymerization and nucleophilic addition reactions, facilitating the synthesis of complex molecular frameworks (Journal of Organic Chemistry). In the fragrance and flavor industry, 2H-pyran-2-one functions as a flavoring agent and fragrance component, providing caramel-like and fruity notes in various formulations (Perfume & Flavourist). Additionally, it finds application in the development of certain analytical reagents and chromogenic agents, where its pyranone ring undergoes selective reactions to produce colorimetric or fluorimetric signals (Analytical Chemistry). The compound is also employed in the synthesis of certain heterocyclic compounds and conjugated systems used in materials science for their optical and electronic properties (Tetrahedron Letters).
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