3-Amino-4-ethylpyrazole
- CAS No.
- 43024-15-3
- Chemical Name:
- 3-Amino-4-ethylpyrazole
- Synonyms
- 4-ethyl-1H-pyrazol-3-amine;3-Amino-4-ethylpyrazole;3-Amino-4-ethyl-1H-pyrazole;1H-Pyrazol-3-amine, 4-ethyl-;4-ethyl-1(2)H-pyrazol-3-ylaMine;4-Ethyl-1H-pyrazol-3-amine , 3-Amino-4-ethyl-1H-pyrazole
- CBNumber:
- CB8947361
- Molecular Formula:
- C5H9N3
- Molecular Weight:
- 111.15
- MDL Number:
- MFCD06797570
- MOL File:
- 43024-15-3.mol
- MSDS File:
- SDS
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| HS Code | 2933998090 | |||||||||
| NFPA 704 |
|
3-Amino-4-ethylpyrazole price More Price(35)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Apolloscientific | OR60148 | 3-Amino-4-ethyl-1H-pyrazole 95% | 43024-15-3 | 100mg | $37 | 2026-06-04 | Buy |
| Apolloscientific | OR60148 | 3-Amino-4-ethyl-1H-pyrazole 95% | 43024-15-3 | 250mg | $62 | 2026-06-04 | Buy |
| Apolloscientific | OR60148 | 3-Amino-4-ethyl-1H-pyrazole 95% | 43024-15-3 | 1g | $137 | 2026-06-04 | Buy |
| Apolloscientific | OR60148 | 3-Amino-4-ethyl-1H-pyrazole 95% | 43024-15-3 | 5g | $429 | 2026-06-04 | Buy |
| Apolloscientific | OR60148 | 3-Amino-4-ethyl-1H-pyrazole 95% | 43024-15-3 | 10g | $772 | 2026-06-04 | Buy |
3-Amino-4-ethylpyrazole Chemical Properties, Uses, Production
Uses
3-Amino-4-ethyl-1H-pyrazole is employed as a intermediate for chemical research and pharmaceutical.
Synthesis
43024-14-2
43024-15-3
The general procedure for the synthesis of 4-ethyl-1H-pyrazol-3-amine from 2-formylbutanenitrile was as follows: potassium tert-butanolate (112.0 g, 1.00 mol) was placed in a 5 L flask fitted with a charging funnel under nitrogen protection, and anhydrous ether (3.0 L) was added and stirred to dissolve. Subsequently, a mixed solution of 2-formylbutanenitrile (69.0 g, 1.00 mol) with methyl acetate (77.7 g, 1.05 mol) was added slowly dropwise over a period of 3 hours. After the dropwise addition was completed, the reaction mixture was stirred at room temperature overnight. After the reaction was complete, the mixture was cooled to 0 °C, neutralized by the addition of acetic acid (57 mL), the reaction mixture was filtered and the solids were washed with ether (500 mL). The filtrates were combined and rotary evaporated at room temperature to give a light yellow oil (95.1 g). This oil was dissolved in anhydrous ethanol (100 mL), 99% hydrazine monohydrate (48 mL) and acetic acid (14 mL) were added sequentially and refluxed overnight under nitrogen protection. At the end of the reaction, the solvent was removed by evaporation and the resulting oil was purified by silica gel column chromatography, using a methanol solution of dichloromethane:7N ammonia as eluent. Finally 22.4 g (20% yield) of 3-amino-4-ethylpyrazole was obtained as a clear oily substance, which solidified on standing.
References
[1] Patent: US2005/187219, 2005, A1. Location in patent: Page/Page column 18
[2] Patent: US2006/281756, 2006, A1. Location in patent: Page/Page column 7
3-Amino-4-ethylpyrazole Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Nanjing Chemlin Chemical Co., Ltd | 025-83697070 13770331960 | info@chemlin.com.cn | China | 16305 | 64 |
| Hunan Hui Bai Shi Biotechnology Co., Ltd. | 0731-85526065 13308475853 | ivy@hnhbsj.com | China | 7236 | 62 |
| Nanjing Vital Chemical Co., Ltd. | Please Send Email 18652950785 | chemweiao@163.com | China | 4368 | 65 |
| Shanghai Sphchem Co., Ltd. | 021-56491756 13512199871 | 2819742715@qq.com | China | 3994 | 55 |
| Shanghai LiangYi Fine Chemicals Co., Ltd. | 021-62594801 | shliangyi@liangyichem.com | China | 50 | 58 |
| Shanghai Yolne Chemical Co., Ltd. | 021-62960152 | 934678158@qq.com | China | 9886 | 55 |
| Shanghai Raise Chemical Technology Co.,Ltd | +86-021-50935922 | China | 7854 | 55 | |
| Megchem Co., Ltd. | +86 (21) 5471-7132 | China | 343 | 58 | |
| Bide Pharmatech Ltd. | 400-164-7117 18317119277 | product02@bidepharm.com | China | 40000 | 60 |
View Latest Price from 3-Amino-4-ethylpyrazole manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-05-12 | 3-Amino-4-ethylpyrazole
43024-15-3
|
1kg | 98% | 2 MTs | PUSHAN INDUSTRIAL (SHAANXI) CO.,LTD |
-
- 3-Amino-4-ethylpyrazole
43024-15-3
- $0.00
- 98%
- PUSHAN INDUSTRIAL (SHAANXI) CO.,LTD
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