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2-Chloro-3-methylthiophene

Also known as: 2-Chloro-3-methylthiophene, 2-chloro-3-methyl-thiophene, 2-chloro-3-methylthi, 2-Chloro-3-methylthiophen, 2-Chloro-3-methythiophene, 2-chlor-3-methylthiophen, Chloro-3-Methylthioph, Thiophene, 2-chloro-3-methyl-, MFCD00130083

2-Chloro-3-methylthiophene (CAS 14345-97-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5ClS and a molecular weight of 132.611 g/mol. Key properties include a boiling point of 150.0±20.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 49.9±8.5 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
14345-97-2
Jingsj CID
J-1042531-7
Molecular Formula
C5H5ClS
Molecular Weight
132.611 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point150.0±20.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point49.9±8.5 °C
Exact Mass131.980042
PSA28.24000
LogP3.00
Vapor Pressure5.0±0.3 mmHg at 25°C
Refractive Index1.554

GHS Safety & Compliance

Flammable / Corrosion / IrritantSignal word: Danger
  • H226 — Flammable liquid and vapour
  • H302 — Harmful if swallowed
  • H318 — Causes serious eye damage

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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 2-Chloro-3-methylthiophene?

The CAS number of 2-Chloro-3-methylthiophene is 14345-97-2.

What are the molecular formula and molecular weight of 2-Chloro-3-methylthiophene?

2-Chloro-3-methylthiophene has molecular formula C5H5ClS and molecular weight 132.611 g/mol.

Is 2-Chloro-3-methylthiophene hazardous?

2-Chloro-3-methylthiophene has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H318 — Causes serious eye damage.

What are the upstream and downstream products of 2-Chloro-3-methylthiophene?

For 2-Chloro-3-methylthiophene, Upstream Products: 3-Methylthiophene, N-Chlorosuccinimide; Downstream Products: 3-(Bromomethyl)-2-chlorothiophene, 3-Methylthiophene-2-carbonitrile, 3-Methyl-2-thiophenecarboxylic acid.

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-Chloro-3-methylthiophene (CAS 14345-97-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1042531-7 (accessed 2026-11-09).

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