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
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(42)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Apolloscientific | OR1237 | Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate ≥95% | 121195-03-7 | 250mg | $21 | 2026-06-04 | Buy |
| Apolloscientific | OR1237 | Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate ≥95% | 121195-03-7 | 1g | $24 | 2026-06-04 | Buy |
| Apolloscientific | OR1237 | Ethyl 3-(thien-2-yl)-1H-pyrazole-5-carboxylate ≥95% | 121195-03-7 | 5g | $62 | 2026-06-04 | Buy |
| Matrix Scientific | 083494 | Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate | 121195-03-7 | 1.00g | $130 | 2026-05-18 | Buy |
| Matrix Scientific | 083494 | Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate | 121195-03-7 | 10.00g | $924 | 2026-05-18 | 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 | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Nanjing Habo Medical Technology Co., Ltd. | 13376080562 13376090521 | sales@habotech.com | China | 724 | 60 |
| Pure Chemistry Scientific Inc. | 001-857-928-2050 or 1-888-588-9418 | sales@chemreagents.com | United States | 10174 | 62 |
| Adamas Reagent, Ltd. | 400-6009262 15618770481 | yhx@titansci.com | China | 14098 | 59 |
| Nanjing Vital Chemical Co., Ltd. | Please Send Email 18652950785 | chemweiao@163.com | China | 4368 | 65 |
| Wuhan TCASChem Technology Co., Ltd. | 027-86697669 13986148687 | sales@tcaschem.com | China | 4000 | 55 |
| Thermo Fisher Scientific | 800-810-5118 | cnchemical@thermofisher.com | China | 17752 | 75 |
View Latest Price from Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2019-07-06 | Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
121195-03-7
|
$1.00 | 1kg | 98% | 200KG | Career Henan Chemical Co |
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- Ethyl 5-thien-2-yl-1H-pyrazole-3-carboxylate
121195-03-7
- $1.00
- 98%
- Career Henan Chemical Co
