ChemicalBook > CAS DataBase List > 3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID

3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID

Product Name: 3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
CAS No.: 26308-42-9
Chemical Name: 3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
Synonyms: AKOS PAO-0874;CHEMBRDG-BB 4402465;TIMTEC-BB SBB010349;ASINEX-REAG BAS 07751205;3-ETHYL-1-METHYLPYRAZOLE-5-CARBOXYLIC ACID;5-ethyl-2-methyl-3-pyrazolecarboxylic acid;5-ethyl-2-methylpyrazole-3-carboxylic acid;5-ethyl-2-methyl-pyrazole-3-carboxylic acid;5-ETHYL-2-METHYL-2H-PYRAZOLE-3-CARBOXYLIC ACID;3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
CBNumber: CB5261846
Molecular Formula: C7H10N2O2
Formula Weight: 154.17
MOL File: 26308-42-9.mol

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3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID Property

Boiling point:: 320.8±30.0 °C(Predicted)
Density: 1.23±0.1 g/cm3(Predicted)
storage temp.: 2-8°C
pka: 3.11±0.25(Predicted)
Appearance: White to off-white Solid

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Safety

Hazard Codes: Xi
HazardClass: IRRITANT

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

TRC

Product number: B440178
Product name: 3-ethyl-1-methyl-1H-pyrazole-5-carboxylicacid
Packaging: 50mg
Price: $45
Updated: 2021/12/16

TRC

Product number: B440178
Product name: 3-ethyl-1-methyl-1H-pyrazole-5-carboxylicacid
Packaging: 100mg
Price: $60
Updated: 2021/12/16

TRC

Product number: B440178
Product name: 3-ethyl-1-methyl-1H-pyrazole-5-carboxylicacid
Packaging: 500mg
Price: $200
Updated: 2021/12/16

AK Scientific

Product number: 2317AB
Product name: 3-Ethyl-1-methyl-1H-pyrazole-5-carboxylicacid
Packaging: 1g
Price: $239
Updated: 2021/12/16

Matrix Scientific

Product number: 018905
Product name: 5-Ethyl-2-methyl-2H-pyrazole-3-carboxylic acid
Packaging: 500mg
Price: $260
Updated: 2021/12/16

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3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID Chemical Properties,Usage,Production

Synthesis

128537-26-8

26308-42-9

General procedure for the synthesis of 3-ethyl-1-methyl-1H-pyrazole-5-carboxylic acid from ethyl 3-ethyl-1-methyl-1H-pyrazole-5-carboxylate: ethyl 3-ethyl-1-methyl-1H-pyrazole-5-carboxylate (50 mmol), sodium hydroxide (150 mmol), water (120 mL), and ethanol (20 mL) were mixed, and the reaction was stirred under reflux conditions for 4-5 hours. After completion of the reaction, the reaction solution was cooled to room temperature and separated by extraction with ethyl acetate. The aqueous phase was collected and the pH was adjusted to 5-6 with dilute hydrochloric acid, acidified and left to precipitate the product. The precipitate was collected by filtration and dried to give 3-ethyl-1-methyl-1H-pyrazole-5-carboxylic acid in 4.8 g yield.

References

[1] Journal of Agricultural and Food Chemistry, 2012, vol. 60, # 6, p. 1470 - 1479
[2] Patent: CN106608873, 2017, A. Location in patent: Paragraph 0111; 0112; 0115
[3] Patent: CN106608872, 2017, A. Location in patent: Paragraph 0104; 0107
[4] Chemical Papers, 2017, vol. 71, # 11, p. 2053 - 2061
[5] European Journal of Medicinal Chemistry, 2018, vol. 149, p. 170 - 181

3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID Suppliers

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26308-42-9, 3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACIDRelated Search:

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5-ETHYL-2-METHYL-2H-PYRAZOLE-3-CARBOXYLIC ACID

5-ethyl-2-methyl-3-pyrazolecarboxylic acid

5-ethyl-2-methyl-pyrazole-3-carboxylic acid

5-ethyl-2-methylpyrazole-3-carboxylic acid

3-ethyl-1-methyl-1H-pyrazole-5-carboxylic acid(SALTDATA: FREE)

1H-Pyrazole-5-carboxylic acid, 3-ethyl-1-Methyl-

TIMTEC-BB SBB010349

3-ETHYL-1-METHYL-1H-PYRAZOLE-5-CARBOXYLIC ACID

3-ETHYL-1-METHYLPYRAZOLE-5-CARBOXYLIC ACID

AKOS PAO-0874

CHEMBRDG-BB 4402465

ASINEX-REAG BAS 07751205

26308-42-9