5-Amino-3-ethyl-1H-pyrazole
- CAS No.
- 1904-24-1
- Chemical Name:
- 5-Amino-3-ethyl-1H-pyrazole
- Synonyms
- 3-AMino-5-ethylpyrazole;H50782;5-Amino-3-ethyl-1H-pyrazole;3-Amino-5-ethyl-2H-pyrazole;5-ethyl-3-aMino-1H-pyrazole;5-ETHYL-2H-PYRAZOL-3-YLAMINE;1H-Pyrazol-3-amine, 5-ethyl-;5-Amino-3-ethyl-1H-pyrazole;3-Ethyl-1H-pyrazol-5-amine hydrochloride
- CBNumber:
- CB7301937
- Molecular Formula:
- C5H9N3
- Molecular Weight:
- 111.15
- MDL Number:
- MFCD02255832
- MOL File:
- 1904-24-1.mol
- MSDS File:
- SDS
| Boiling point | 313.8±22.0 °C(Predicted) |
|---|---|
| Density | 1.126 g/mL at 25 °C |
| refractive index | 1.5420 |
| Flash point | >110℃ |
| storage temp. | Keep in dark place,Sealed in dry,Store in freezer, under -20°C |
| form | solid |
| pka | 15.84±0.10(Predicted) |
| Appearance | Light yellow to yellow Liquid |
| InChI | InChI=1S/C5H9N3/c1-2-4-3-5(6)8-7-4/h3H,2H2,1H3,(H3,6,7,8) |
| InChIKey | AXDGPQLEVYSXNL-UHFFFAOYSA-N |
| SMILES | N1C(CC)=CC(N)=N1 |
| UNSPSC Code | 12352200 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38 |
| Safety Statements | 23-26-36/37/39 |
| WGK Germany | 3 |
| HazardClass | IRRITANT |
| HS Code | 2933199090 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
5-Amino-3-ethyl-1H-pyrazole price More Price(50)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | CDS019625 | 5-Amino-3-ethyl-1H-pyrazole Aldrich | 1904-24-1 | 100mg | $114 | 2026-04-30 | Buy |
| Sigma-Aldrich | 755222 | 5-Amino-3-ethyl-1H-pyrazole | 1904-24-1 | 1g | $131 | 2023-06-20 | Buy |
| AstaTech | 50999 | 3-ETHYL-1H-PYRAZOL-5-AMINE 97% | 1904-24-1 | 1G | $37 | 2026-04-30 | Buy |
| AstaTech | 50999 | 3-ETHYL-1H-PYRAZOL-5-AMINE 97% | 1904-24-1 | 5G | $114 | 2026-04-30 | Buy |
| Apolloscientific | OR480223 | 3-Amino-5-ethyl-2H-pyrazole 97% | 1904-24-1 | 1g | $26 | 2026-06-04 | Buy |
5-Amino-3-ethyl-1H-pyrazole Chemical Properties, Uses, Production
Uses
3-Amino-5-ethyl-1H-pyrazole is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.
Definition
ChEBI: 3-Amino-5-ethyl-1H-pyrazole is a dicarboximide and a heterocyclic compound.
Synthesis
33279-01-5
1904-24-1
GENERAL STEPS: 3-Oxopentanenitrile (XXXV; 2 g; 21 mmol) was dissolved in ethanol (60 mL) under stirring conditions, followed by the addition of hydrazine hydrate (1.3 mL; 41 mmol). The reaction mixture was heated to reflux for 12 hours. Upon completion of the reaction, the mixture was cooled to room temperature and concentrated under reduced pressure. The crude product was purified by column chromatography (eluent: 8% methanol-dichloromethane) to afford 5-ethyl-1H-pyrazol-3-amine (XXXVI; 1.8 g; 78% yield) as a brown viscous solid. The structure of the product was confirmed by 1H NMR (400 MHz, DMSO-d6): δ 11.0 (broad single peak, 1H), 5.17 (single peak, 1H), 4.5 (broad single peak, 2H), 2.4 (multiple peaks, 2H), and 1.1 (triple peak, 3H). Mass spectrometry analysis showed a molecular ion peak (M+1) of 111.93.
References
[1] Patent: WO2015/97122, 2015, A1. Location in patent: Page/Page column 92
[2] Patent: WO2007/99326, 2007, A1. Location in patent: Page/Page column 114
5-Amino-3-ethyl-1H-pyrazole Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| QINGDAO CARELONGPHARMATECH CO.,LTD | 053288191853 13061484198 | sales@carelongchem.com | China | 455 | 57 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Wuhan Chemwish Technology Co., Ltd | 86-027-67849912 | sales@chemwish.com | China | 35884 | 56 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10972 | 64 |
| ZEROSCHEM.CO.,LTD. | 10-61256048 13810278579; | sales@zeroschem.com | China | 1400 | 59 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| Wuhan Luohua Medical Technology Co.,Ltd. | 13477084141; 13477084141 | sales@luohuapharm.com | China | 468 | 60 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
| Hunan Hui Bai Shi Biotechnology Co., Ltd. | 0731-85526065 13308475853 | ivy@hnhbsj.com | China | 7236 | 62 |
View Latest Price from 5-Amino-3-ethyl-1H-pyrazole manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-07-06 | 5-AMINO-3-ETHYL-1H-PYRAZOLE
1904-24-1
|
$8.00 | 1KG | 99% | 10tons | Career Henan Chemical Co |
-
- 5-AMINO-3-ETHYL-1H-PYRAZOLE
1904-24-1
- $8.00
- 99%
- Career Henan Chemical Co
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