1821-16-5
1821-16-5 structure
- Name: 3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]
- Chemical Name: 4-hydroxy-3-[1-(4-hydroxy-2-oxochromen-3-yl)ethyl]chromen-2-one
- CAS Number: 1821-16-5
- Molecular Formula: C20H14O6
- Molecular Weight: 350.32200
- Create Date: 2016-10-21 20:29:02
- Modify Date: 2024-01-02 11:35:15
| Name | 4-hydroxy-3-[1-(4-hydroxy-2-oxochromen-3-yl)ethyl]chromen-2-one |
|---|---|
| Synonyms |
Methyl-dicumarol
4,4'-dihydroxy-3,3'-ethane-1,1-diyl-bis-chromen-2-one Ethylidene dicoumarol |
| Density | 1.534g/cm3 |
|---|---|
| Boiling Point | 520.7ºC at 760 mmHg |
| Molecular Formula | C20H14O6 |
| Molecular Weight | 350.32200 |
| Flash Point | 188.6ºC |
| Exact Mass | 350.07900 |
| PSA | 100.88000 |
| LogP | 3.46240 |
| Vapour Pressure | 1.14E-11mmHg at 25°C |
| Index of Refraction | 1.717 |
| RIDADR | UN 2811 |
|---|---|
| Packaging Group | III |
| Hazard Class | 6.1(b) |
| HS Code | 2932209090 |
|
~94%
1821-16-5 |
| Literature: Khan, Khalid Mohammed; Iqbal, Sajid; Lodhi, Muhammad Arif; Maharvi, Ghulam Murtaza; Zia-Ullah; Choudhary, Muhammad Iqbal; Atta-ur-Rahman; Perveen, Shahnaz Bioorganic and Medicinal Chemistry, 2004 , vol. 12, # 8 p. 1963 - 1968 |
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~%
Detail
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| Literature: Ziegler et al. Monatshefte fuer Chemie, 1956 , vol. 87, p. 439,445 |
| HS Code | 2932209090 |
|---|---|
| Summary | 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |