491-37-2
491-37-2 structure
- Name: 4-Chromanone
- Chemical Name: Chroman-4-one
- CAS Number: 491-37-2
- Molecular Formula: C9H8O2
- Molecular Weight: 148.159
- Catalog: Pharmaceutical intermediate Heterocyclic compound Pyran compound
- Create Date: 2018-04-27 08:00:00
- Modify Date: 2026-07-07 22:18:19
| Name | Chroman-4-one |
|---|---|
| Synonyms |
4H-1-Benzopyran-4-one, 2,3-dihydro
2,3-dihydrochroMen-4-one CHROMANONE,4 2,3-dihydro-4h-1-benzopyran-4-on 2,3-DIHYDRO-4H-CHROMEN-4-ONE 2H-1-Benzopyran-4(3H)-one 2,3-DIHYDRO-1-BENZOPYRAN-4-ONE dihydrobenz-γ-pyrone 2,3-Dihydro-4-benzopyranone 3-Dihydro-2-benzopyran-4-one JRH-01801, Chroman-4-one 4-Chromanone > EINECS 207-736-3 CHROMANONE, 4 chroman-4-one 2,3-dihydro-4H-1-benzopyran-4-one 3-Dihydro-4-benzopyranone MFCD00006840 ChondrotinSulfateBp98 4-Chlomanone 2,3-dihydro-4-benzopyranone CHROMAN-4-ONE 2,3-Dihydro-1-benzopyran-4-one, 2,3-Dihydro-4H-chromen-4-one 4-Chromanone ISO 9001：2015 REACH 4-CHROMANONE CHROMANONE 2,3-Dihydro-4H-chromen-4-one Isochromanone 2,3-Dihydro-4H-1-benzopyran-4-one 4-chormanone 2,4-DIHYDRO-1-BENZOPYRAN-4-ONE |
| Density | 1.2±0.1 g/cm3 |
|---|---|
| Boiling Point | 253.2±0.0 °C at 760 mmHg |
| Melting Point | 34-40ºC |
| Molecular Formula | C9H8O2 |
| Molecular Weight | 148.159 |
| Flash Point | 128.4±15.3 °C |
| Exact Mass | 148.052429 |
| PSA | 26.30000 |
| LogP | 1.99 |
| Vapour Pressure | 0.0±0.5 mmHg at 25°C |
| Index of Refraction | 1.562 |
| Storage condition | 0-10°C |
| Hazard Codes | Xi |
|---|---|
| Risk Phrases | R33 |
| Safety Phrases | S24/25 |
| WGK Germany | 2 |
| RTECS | DJ2981225 |
| HS Code | 2932999099 |
| Precursor 9 | |
|---|---|
| DownStream 10 | |
![3-(4-METHOXY-PHENOXY)-PROPYL]-METHYL-AMINE structure](https://image.chemsrc.com/caspic/208/55745-97-6.png)
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |