Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate

5-(叔丁基)-1H-吡唑-3-甲酸乙酯

Also known as: Ethyl 3-(tert-butyl)-1H-pyrazole-5-carboxylate, Ethyl 3-tert-butyl-1H-pyrazole-5-carboxylate, Ethyl 3-t-butyl-1H-pyrazole-5-carboxylate, Ethyl 3-t-butyl-pyrazol-5-carboxylate, Ethyl 5-tert-butyl-2H-pyrazole-3-carboxylate, 5-tert-Butyl-2H-pyrazole-3-carboxylic acid ethyl ester, 5-TERT-BUTYL-2H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER, ETHYL 3-T-BUTYL-5-PYRAZOLECARBOXYLATE, ETHYL 3-TERT-BUTYLPYRAZOLE-5-CARBOXYLATE, ETHYL 5-TERT-BUTYL-2H-PYRAZOLE-3-CARBOXYLATE, AKOS BBS-00004492, BUTTPARK 366-08, BUTTPARK 36\06-08, ethyl 3-tert-butyl-1H-pyrazole-5-carboxylate, ethyl 5-(tert-butyl)-2H-pyrazole-3-carboxylate, ethyl 3-t-butyl-1H-pyrazole-5-carboxylate

Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate (CAS 83405-70-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H16N2O2 and a molecular weight of 196.24600 g/mol. It is also known as Ethyl 3-(tert-butyl)-1H-pyrazole-5-carboxylate, Ethyl 3-tert-butyl-1H-pyrazole-5-carboxylate and Ethyl 3-t-butyl-1H-pyrazole-5-carboxylate. Key properties include a melting point of 141-144ºC, a boiling point of 322.3ºC at 760 mmHg and a density of 1.077 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
83405-70-3
Jingsj CID
J-1454134-2
Molecular Formula
C10H16N2O2
Chinese Name
5-(叔丁基)-1H-吡唑-3-甲酸乙酯
Molecular Weight
196.24600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point141-144ºC
Boiling Point322.3ºC at 760 mmHg
Density1.077 g/cm3

Frequently Asked Questions

What is the CAS number of Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate?

The CAS number of Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate is 83405-70-3.

What are the molecular formula and molecular weight of Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate?

Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate has molecular formula C10H16N2O2 and molecular weight 196.24600 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Ethyl 5-(tert-butyl)-1H-pyrazole-3-carboxylate (CAS 83405-70-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1454134-2 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.