- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: 3,5-Dibromo-2-hydroxypyrazine
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: 3,5-Dibromo-2-hydroxypyrazine
- Price: ￥728.0/1g ￥258.0/250mg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: 3,5-Dibromo-2-hydroxypyrazine
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
21943-15-7
21943-15-7 structure
- Name: 3,5-Dibromo-2-hydroxypyrazine
- Chemical Name: 3,5-dibromo-1H-pyrazin-2-one
- CAS Number: 21943-15-7
- Molecular Formula: C4H2Br2N2O
- Molecular Weight: 253.880
- Catalog: Pharmaceutical intermediate Heterocyclic compound Pyrazines
- Create Date: 2018-04-22 08:00:00
- Modify Date: 2025-08-30 17:23:44
| Name | 3,5-dibromo-1H-pyrazin-2-one |
|---|---|
| Synonyms |
3,5-Dibrom-2(1H)-pyrazinon
2-pyrazinol, 3,5-dibromo- 3,5-Dibromo-2-pyrazinol 3,5-Dibromo-2(1H)-pyrazinone 3,5-Dibromo-2-hydroxypyrazine 3,5-Dibromo-pyrazin-2-ol 3,5-Dibrom-2-hydroxy-pyrazin 3,5-dibromopyrazin-2-ol |
| Density | 2.4±0.1 g/cm3 |
|---|---|
| Boiling Point | 430.5±40.0 °C at 760 mmHg |
| Molecular Formula | C4H2Br2N2O |
| Molecular Weight | 253.880 |
| Flash Point | 214.2±27.3 °C |
| Exact Mass | 251.853378 |
| PSA | 46.01000 |
| LogP | 1.52 |
| Vapour Pressure | 0.0±1.1 mmHg at 25°C |
| Index of Refraction | 1.667 |
| Symbol |
GHS05, GHS07 |
|---|---|
| Signal Word | Danger |
| Hazard Statements | H302-H318 |
| Precautionary Statements | P280-P305 + P351 + P338 |
| Hazard Codes | Xn |
| Risk Phrases | 22-41 |
| Safety Phrases | 26-39 |
| RIDADR | NONH for all modes of transport |
| HS Code | 2933990090 |
|
~79%
21943-15-7 |
| Literature: PFIZER INC.; NINKOVIC, Sacha; BRAGANZA, John Frederick; COLLINS, Michael Raymond; KATH, John Charles; LI, Hui; RICHTER, Daniel Tyler Patent: WO2010/16005 A1, 2010 ; Location in patent: Page/Page column 144 ; WO 2010/016005 A1 |
| Precursor 1 | |
|---|---|
| DownStream 1 | |
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |