2,4,5-Trimethylthiazole

Also known as: Trimethylthiazole, 2,4,5-Trimethyl-1,3-thiazole, Thiazole, 2,4,5-trimethyl-, FEMA 3325

2,4,5-Trimethylthiazole (CAS 13623-11-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H9NS and a molecular weight of 127.207 g/mol. Key properties include a boiling point of 168.7±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 56.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 13623-11-5
Jingsj CID: J-1504145-9
Molecular Formula: C₆H₉NS
Molecular Weight: 127.207 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	168.7±0.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	56.1±0.0 °C
Exact Mass	127.045570
PSA	41.13000
LogP	2.02
Vapor Pressure	2.1±0.3 mmHg at 25°C
Refractive Index	1.527

GHS Safety & Compliance

Flammable / Corrosion / IrritantSignal word: Danger

H226 — Flammable liquid and vapour
H302 — Harmful if swallowed
H315 — Causes skin irritation
H318 — Causes serious eye damage
H335 — May cause respiratory irritation

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 2,4,5-Trimethylthiazole?

The CAS number of 2,4,5-Trimethylthiazole is 13623-11-5.

What are the molecular formula and molecular weight of 2,4,5-Trimethylthiazole?

2,4,5-Trimethylthiazole has molecular formula C6H9NS and molecular weight 127.207 g/mol.

Is 2,4,5-Trimethylthiazole hazardous?

2,4,5-Trimethylthiazole has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H315 — Causes skin irritation.

What are the upstream and downstream products of 2,4,5-Trimethylthiazole?

For 2,4,5-Trimethylthiazole, Upstream Products: Acetamide, 3-Bromo-2-butanone, N-(1-methyl-2-oxopropyl)acetamide.

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. "2,4,5-Trimethylthiazole (CAS 13623-11-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504145-9 (accessed 2026-11-09).

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