CAS 504-31-4: 2H-Pyran-2-one
Description:2H-Pyran-2-one, also known as coumarin, is a fragrant organic compound characterized by its aromatic properties and a lactone structure. It features a six-membered ring containing one oxygen atom and is part of the pyran family. This compound is typically colorless to pale yellow and has a sweet, vanilla-like scent, making it popular in the fragrance and flavoring industries. Coumarin is soluble in organic solvents such as ethanol and ether but has limited solubility in water. It exhibits a range of biological activities, including anticoagulant properties, and has been studied for its potential therapeutic applications. However, it is important to note that coumarin can be toxic in high doses and is regulated in some countries due to its potential health risks. The compound's structure allows for various chemical reactions, including oxidation and substitution, making it a versatile building block in organic synthesis. Overall, 2H-Pyran-2-one is a significant compound in both natural and synthetic chemistry.
Formula:C5H4O2
InChI:InChI=1S/C5H4O2/c6-5-3-1-2-4-7-5/h1-4H
InChI key:InChIKey=ZPSJGADGUYYRKE-UHFFFAOYSA-N
SMILES:O=C1OC=CC=C1
- Synonyms:
- 1,2-Pyrone
- 2,4-Pentadienoic acid, 5-hydroxy-, δ-lactone
- 2-Pyranone
- 2-Pyrone
- 2H-Pyran, 2-oxo-
- 2H-Pyran-2-one
- 2H-Pyrane-2-one
- Coumalin
- α-Pyrone
Brand | Product data | Purity | Price range | Estimated delivery |
---|---|---|---|---|
![]() | 2H-Pyran-2-one REF: IN-DA003NSKCAS: 504-31-4 | 97% | To inquire | Fri 02 May 25 |
![]() | 2H-Pyran-2-one REF: 54-OR94430CAS: 504-31-4 | 95% | 32.00 €~2,086.00 € | Mon 05 May 25 |
![]() | α-PYRONE REF: 10-F533039CAS: 504-31-4 | 95.0% | 57.00 €~1,947.00 € | Mon 05 May 25 |
![]() | α-Pyrone REF: 3B-P1183CAS: 504-31-4 | >98.0%(GC) | 311.00 € | Tue 27 May 25 |
![]() | a-Pyrone REF: 3D-FP176715CAS: 504-31-4 | Min. 95% | - - - | Discontinued product |

Ref: IN-DA003NSK
1g | 162.00 € | ||
5g | 562.00 € | ||
100mg | 52.00 € | ||
250mg | 77.00 € |

Ref: 54-OR94430
1g | 167.00 € | ||
5g | 534.00 € | ||
25g | 2,086.00 € | ||
100mg | 32.00 € | ||
250mg | 61.00 € |

Ref: 10-F533039
1g | 136.00 € | ||
5g | 437.00 € | ||
10g | 835.00 € | ||
25g | 1,947.00 € | ||
250mg | 57.00 € |

α-Pyrone
Ref: 3B-P1183
1g | 311.00 € |

a-Pyrone
Ref: 3D-FP176715
1g | Discontinued | Request information | |
2g | Discontinued | Request information | |
5g | Discontinued | Request information | |
250mg | Discontinued | Request information | |
500mg | Discontinued | Request information |