- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
- Price: ￥198.0/1g ￥658.0/5g
- Purity: 98.0%
- Stocking Period: 2 Day
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
174508-31-7
174508-31-7 structure
- Name: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
- Chemical Name: 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine
- CAS Number: 174508-31-7
- Molecular Formula: C6H4Br2O2S
- Molecular Weight: 299.968
- Catalog: Pharmaceutical intermediate Heterocyclic compound Thiophene compound
- Create Date: 2018-12-27 09:11:46
- Modify Date: 2025-08-24 21:12:23
| Name | 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine |
|---|---|
| Synonyms |
Thieno[3,4-b]-1,4-dioxin, 5,7-dibromo-2,3-dihydro-
5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxin 5,7-Dibromo-2,3-dihydrothieno[3,4-b]-1,4-dioxine 5,7-Dibromo-2,3-dihydrothieno[3,4-b][1,4]dioxine 2,5-Dibromo-3,4-ethylenedioxythiophene |
| Density | 2.1±0.1 g/cm3 |
|---|---|
| Boiling Point | 306.5±42.0 °C at 760 mmHg |
| Melting Point | 98ºC |
| Molecular Formula | C6H4Br2O2S |
| Molecular Weight | 299.968 |
| Flash Point | 139.2±27.9 °C |
| Exact Mass | 297.829865 |
| PSA | 46.70000 |
| LogP | 3.06 |
| Vapour Pressure | 0.0±0.6 mmHg at 25°C |
| Index of Refraction | 1.644 |
| Storage condition | ?20°C |
| Symbol |
GHS07 |
|---|---|
| Signal Word | Warning |
| Hazard Statements | H302 |
| Hazard Codes | Xn:Harmful |
| Risk Phrases | R20/21/22;R36/37/38 |
| Safety Phrases | S22-S26-S36/37/39 |
| RIDADR | NONH for all modes of transport |
| HS Code | 2934999090 |
|
~99%
174508-31-7 |
| Literature: Hicks, Robin G.; Nodwell, Matthew B. Journal of the American Chemical Society, 2000 , vol. 122, # 28 p. 6746 - 6753 |
|
~%
174508-31-7 |
| Literature: Journal of Materials Chemistry, , vol. 15, # 45 p. 4783 - 4792 |
|
~%
174508-31-7 |
| Literature: Journal of Materials Chemistry, , vol. 15, # 45 p. 4783 - 4792 |
| Precursor 3 | |
|---|---|
| DownStream 1 | |
![7-Bromo-2,3-dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde structure](https://image.chemsrc.com/caspic/315/852054-42-3.png)
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |