Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate

Also known as: 5-Thiazolecarboxylic acid, 2-[3-formyl-4-(2-methylpropoxy)phenyl]-4-methyl-, ethyl ester, Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methyl-1,3-thiazole-5-carboxylate, Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methyl-5-thiazolecarboxylate, Febuxostat impurity 2, Febuxostat impurity G, ethyl 2-[3-formyl-4-(2-methylpropoxy)phenyl]-4-methyl-1,3-thiazole-5-carboxylate

Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate (CAS 161798-03-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C18H21NO4S and a molecular weight of 347.429 g/mol. Key properties include a boiling point of 495.9±55.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 253.7±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 161798-03-4
Jingsj CID: J-1046156-0
Molecular Formula: C₁₈H₂₁NO₄S
Molecular Weight: 347.429 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	495.9±55.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	253.7±31.5 °C
Exact Mass	347.119141
PSA	93.73000
LogP	5.65
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.566

Customs & Trade Information

HS Code	2934100090
Summary	2934100090 other compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate?

The CAS number of Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate is 161798-03-4.

What are the molecular formula and molecular weight of Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate?

Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate has molecular formula C18H21NO4S and molecular weight 347.429 g/mol.

What are the upstream and downstream products of Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate?

For Ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate, Upstream Products: 1-Bromo-2-methylpropane, ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate, Ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate; Downstream Products: Ethyl 2-(3-cyano-4-isobutoxyphenyl)-4-methyl-5-thiazolecarboxylate.

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 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate (CAS 161798-03-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1046156-0 (accessed 2026-11-09).

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