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2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid

Also known as: 2-Bromo-4-methylthiazole-5-carboxylic acid, 5-Thiazolecarboxylic acid, 2-bromo-4-methyl-, 2-Bromo-4-methyl-5-thiazolecarboxylic acid

2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 40003-41-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4BrNO2S and a molecular weight of 222.060 g/mol. Key properties include a melting point of 153ºC, a boiling point of 349.5±22.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 165.2±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
40003-41-6
Jingsj CID
J-1449004-1
Molecular Formula
C5H4BrNO2S
Molecular Weight
222.060 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point153ºC
Boiling Point349.5±22.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point165.2±22.3 °C
Exact Mass220.914597
PSA78.43000
LogP2.06
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.640
Storage Conditions2-8°C

GHS Safety & Compliance

IrritantSignal word: Warning
  • H317 — May cause an allergic skin reaction

Customs & Trade Information

HS Code2934100090
Summary2934100090 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 2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid?

The CAS number of 2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid is 40003-41-6.

What are the molecular formula and molecular weight of 2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid?

2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid has molecular formula C5H4BrNO2S and molecular weight 222.060 g/mol.

Is 2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid hazardous?

2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction.

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

Last updated:

How to cite: Jingsj. "2-Bromo-4-methyl-1,3-thiazole-5-carboxylic acid (CAS 40003-41-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1449004-1 (accessed 2026-11-09).

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