Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
- CAS No.
- 121195-03-7
- Chemical Name:
- Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
- Synonyms
- BUTTPARK 43\57-67;Ethyl 5-(2-Thienyl)pyrazole-3-carboxylate;ETHYL 3-(2-THIENYL)PYRAZOLE-5-CARBOXYLATE;ETHYL 3-(THIEN-2-YL)PYRAZOLE-5-CARBOXYLATE;ETHYL 5-THIEN-2-YL-1H-PYRAZOLE-3-CARBOXYLATE;ETHYL 3-(2-THIENYL)-1H-PYRAZOLE-5-CARBOXYLATE;ethyl 5-(2-thienyl)-1H-pyrazole-3-carboxylate;Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate;Ethyl 5-thiophen-2-yl-2H-pyrazole-3-carboxylate;ethyl 5-(thiophen-2-yl)-1H-pyrazole-3-carboxylate
- CBNumber:
- CB5852930
- Molecular Formula:
- C10H10N2O2S
- Molecular Weight:
- 222.26
- MDL Number:
- MFCD07772880
- MOL File:
- 121195-03-7.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | E926763 | 250mg | $55 |
| Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | E926763 | 1g | $75 |
| Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | X9479 | 1g | $90 |
| Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate 97% | 083494 | 1g | $130 |
| Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate | OR1237 | 1g | $38 |
| More product size | |||
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H312-H332 |
| Precautionary statements | P280 |
| Hazard Codes | Xi |
| Risk Statements | 20/21/22 |
| Safety Statements | 22-36/37/39 |
| Hazard Note | Irritant |
| HS Code | 29331990 |
Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate price More Price(20)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TRC | E926763 | Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | 121195-03-7 | 250mg | $55 | 2021-12-16 | Buy |
| TRC | E926763 | Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | 121195-03-7 | 1g | $75 | 2021-12-16 | Buy |
| AK Scientific | X9479 | Ethyl5-thien-2-yl-1H-pyrazole-3-carboxylate | 121195-03-7 | 1g | $90 | 2021-12-16 | Buy |
| Matrix Scientific | 083494 | Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate 97% | 121195-03-7 | 1g | $130 | 2021-12-16 | Buy |
| Apolloscientific | OR1237 | Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate | 121195-03-7 | 1g | $38 | 2021-12-16 | Buy |
Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate Chemical Properties,Uses,Production
Chemical Properties
Off-white solid
Synthesis
36983-36-5
121195-03-7
GENERAL METHOD: To a stirred solution of ethyl 2,4-dioxo-4-(thiophen-2-yl)butyrate (0.1 mol) in anhydrous toluene (200 mL) was added a suspension of NaH in mineral oil (60%; 0.2 mol) in batches and the mixture was heated to 50°C. The mixture was then heated to 50°C. The solution of ethyl oxalate (0.15 mol) in anhydrous toluene (60 mL) was added slowly. At this temperature, a solution of diethyl oxalate (0.15 mol) in anhydrous toluene (60 mL) was added slowly and dropwise. The reaction mixture was refluxed for 1.5 hours. After cooling to room temperature, acetic acid (0.25 mol) was added slowly and dropwise. The reaction mixture was washed with water (200 mL) and the organic phase was dried over MgSO4 and concentrated to dryness. The crude product obtained was dissolved in anhydrous ethanol (250 mL), hydrazine dihydrochloride (0.11 mol) was added and the mixture was refluxed for 3 hours. After evaporation of the solvent, the residue was treated with water (200 mL) and cooled in an ice bath for 1 hour. The crystals were collected by filtration and dried in air to give ethyl 3-(thiophen-2-yl)-1H-pyrazole-5-carboxylate. If necessary, the product can be further purified by recrystallization from aqueous ethanol.
References
[1] Synlett, 2018, vol. 29, # 7, p. 890 - 893
Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate Preparation Products And Raw materials
Raw materials
1of2
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29819 | 58 |
| Changzhou Ansciep Chemical Co., Ltd. | +86 519 86305871 | sales@ansciepchem.com | CHINA | 4241 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63687 | 58 |
| SHANGHAI T&W PHARMACEUTICAL CO., LTD. | +86-021-61551413 +8618813727289 | contact@trustwe.com | China | 5742 | 58 |
| Neostar United (Changzhou) Industrial Co., Ltd. | +86-0519-85551759 +8613506123987 | marketing1@neostarunited.com | China | 8828 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418684 +8618949823763 | sales@tnjchem.com | China | 25356 | 58 |
| Aceschem Inc. | +1-817863-6948 +1-（817）863-6948 | sales@aceschem.com | United States | 19632 | 58 |
| Zhengzhou Lingzhiyue Technology Co., Ltd | +86-0371-55074660 +86-13523716970 | Lingzhiyue@aliyun.com | China | 3145 | 58 |
| HANGZHOU LEAP CHEM CO., LTD. | +86-571-87711850 | market18@leapchem.com | China | 43333 | 58 |
| Aladdin Scientific | tp@aladdinsci.com | United States | 57505 | 58 |
View Lastest Price from Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2019-07-06 | Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
121195-03-7
|
US $1.00 / kg | 1kg | 98% | 200KG | Career Henan Chemical Co |
-
- Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
121195-03-7
- US $1.00 / kg
- 98%
- Career Henan Chemical Co
