57121-49-0
57121-49-0 structure
- Name: 4-Ethynyl-1H-pyrazole
- Chemical Name: 4-ethynyl-1H-pyrazole
- CAS Number: 57121-49-0
- Molecular Formula: C5H4N2
- Molecular Weight: 92.099
- Create Date: 2018-08-30 18:27:19
- Modify Date: 2025-08-25 23:12:03
| Name | 4-ethynyl-1H-pyrazole |
|---|---|
| Synonyms |
1H-Pyrazole,4-ethynyl
4-ethynylpyrazole 1H-Pyrazole, 4-ethynyl- 4-Ethinylpyrazol 4-Ethynyl-1H-pyrazole |
| Density | 1.2±0.1 g/cm3 |
|---|---|
| Boiling Point | 238.5±13.0 °C at 760 mmHg |
| Molecular Formula | C5H4N2 |
| Molecular Weight | 92.099 |
| Flash Point | 114.3±12.8 °C |
| Exact Mass | 92.037445 |
| PSA | 28.68000 |
| LogP | 0.50 |
| Vapour Pressure | 0.1±0.5 mmHg at 25°C |
| Index of Refraction | 1.554 |
| Hazard Codes | Xi |
|---|
|
~99%
57121-49-0 |
| Literature: GENENTECH, INC.; BRYAN, Marian C.; CHAN, Bryan; HANAN, Emily; HEFFRON, Timothy; PURKEY, Hans; ELLIOTT, Richard Leonard; HEALD, Robert; KNIGHT, Jamie; LAINCHBURY, Michael; SEWARD, Eileen M. Patent: WO2014/81718 A1, 2014 ; Location in patent: Page/Page column 39 ; |
|
~95%
57121-49-0 |
| Literature: UCB PHARMA S.A. Patent: WO2007/141504 A1, 2007 ; Location in patent: Page/Page column 61 ; WO 2007/141504 A1 |
|
~69%
57121-49-0 |
| Literature: Tolf, Bo-Ragnar; Dahlbom, Richard; Theorell, Hugo; Akeson, Ake Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry, 1982 , vol. 36, # 2 p. 101 - 108 |
|
~47%
57121-49-0 |
| Literature: Heinisch, Gottfried; Holzer, Wolfgang; Obala, Claudia Monatshefte fuer Chemie, 1988 , vol. 119, p. 253 - 262 |
| Precursor 1 | |
|---|---|
| DownStream 2 | |
