4H-PYRAN-4-ONE
Synonym(s):γ-Pyrone
- CAS NO.：108-97-4
- Empirical Formula: C5H4O2
- Molecular Weight: 96.08
- MDL number: MFCD00006576
- EINECS: 203-634-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-01 09:49:31
What is 4H-PYRAN-4-ONE?
The Uses of 4H-PYRAN-4-ONE
4H-Pyran-4-one was used in the synthesis of probes grafted on the lipid headgroups.
Definition
ChEBI: A pyranone that is 4H-pyran substituted by an oxo group at position 4.
Preparation
1) from Diethylacetone dioxalate by cyclization to Chelidonic acid (gamma-Pyrone-
2,6-dicarboxylic acid). The acid yields 4H-Pyran-4-one by decarboxylation.
2) by heating of I-Methoxypent-l -en-3-yn-5-
al diethylacetal with Methanol and water,
using Mercuric sulfate or Sulfuric acid
catalyst.
Purification Methods
Purify -pyrone by vacuum distillation; the distillate crystallises and is hygroscopic. It is non-steam vola
Properties of 4H-PYRAN-4-ONE
| Melting point: | 32-34 °C(lit.) |
| Boiling point: | 210-215 °C(lit.) |
| Density | 1.20 |
| refractive index | 1.5238 |
| Flash point: | 214 °F |
| storage temp. | 2-8°C |
| solubility | Slightly soluble in water, soluble in alcohol and oils. |
| form | clear liquid |
| color | Light yellow to Brown |
| Odor | Warm, slight ly pungent, hay-like herbaceous odor of moderate to poor tenacity. |
| BRN | 105293 |
| Stability: | Polymerizes under exposure to air (oxygen) and alkali. Turns darker brown, and its odor fades. |
| CAS DataBase Reference | 108-97-4 |
Safety information for 4H-PYRAN-4-ONE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H332:Acute toxicity,inhalation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 4H-PYRAN-4-ONE
| InChIKey | CVQUWLDCFXOXEN-UHFFFAOYSA-N |
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