Ethyl 5-amino-3-methylisothiazole-4-carboxylate

Also known as: 4-Isothiazolecarboxylic acid, 5-amino-3-methyl-, ethyl ester, 5-amino-3-methyl-isothiazole-4-carboxylic acid ethyl ester, 5-amino-4-ethoxycarbonyl-3-methylisothiazole, Ethyl 5-amino-3-methyl-1,2-thiazole-4-carboxylate, ART-CHEM-BB B014678

Ethyl 5-amino-3-methylisothiazole-4-carboxylate (CAS 34859-65-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H10N2O2S and a molecular weight of 186.23100 g/mol. Key properties include a melting point of 111ºC, a boiling point of 221.2ºC at 760mmHg, a density of 1.283g/cm3 and a flash point of 87.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 34859-65-9
Jingsj CID: J-1359274-0
Molecular Formula: C₇H₁₀N₂O₂S
Molecular Weight: 186.23100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	111ºC
Boiling Point	221.2ºC at 760mmHg
Density	1.283g/cm3
Flash Point	87.6ºC
Exact Mass	186.04600
PSA	93.45000
LogP	1.79160
Refractive Index	1.578

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Ethyl 5-amino-3-methylisothiazole-4-carboxylate?

The CAS number of Ethyl 5-amino-3-methylisothiazole-4-carboxylate is 34859-65-9.

What are the molecular formula and molecular weight of Ethyl 5-amino-3-methylisothiazole-4-carboxylate?

Ethyl 5-amino-3-methylisothiazole-4-carboxylate has molecular formula C7H10N2O2S and molecular weight 186.23100 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Ethyl 5-amino-3-methylisothiazole-4-carboxylate (CAS 34859-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1359274-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.