2-Iodothiophene
Also known as: 2-Thienyl Iodide, 2-iodo thiophene, Thiophene, 2-iodo-, alpha-Iodothiophene, Iodothiophene
2-Iodothiophene (CAS 3437-95-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3IS and a molecular weight of 210.036 g/mol. Key properties include a melting point of −40 °C(lit.), a boiling point of 181.8±13.0 °C at 760 mmHg, a density of 2.1±0.1 g/cm3 and a flash point of 71.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3437-95-4
- Jingsj CID
- J-1990835-1
- Molecular Formula
- C4H3IS
- Molecular Weight
- 210.036 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | −40 °C(lit.) |
|---|---|
| Boiling Point | 181.8±13.0 °C at 760 mmHg |
| Density | 2.1±0.1 g/cm3 |
| Flash Point | 71.1±0.0 °C |
| Exact Mass | 209.900009 |
| PSA | 28.24000 |
| LogP | 3.23 |
| Vapor Pressure | 1.1±0.3 mmHg at 25°C |
| Refractive Index | 1.666 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H317 — May cause an allergic skin reaction
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
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 2-Iodothiophene?
The CAS number of 2-Iodothiophene is 3437-95-4.
What are the molecular formula and molecular weight of 2-Iodothiophene?
2-Iodothiophene has molecular formula C4H3IS and molecular weight 210.036 g/mol.
Is 2-Iodothiophene hazardous?
2-Iodothiophene has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H317 — May cause an allergic skin reaction.
What are the upstream and downstream products of 2-Iodothiophene?
For 2-Iodothiophene, Upstream Products: 2-Bromothiophene, 2-Thiopheneboronic acid, 2-Chlorothiophene; Downstream Products: Methyl thiophene-2-carboxylate, 2-Thiophenecarboxaldehyde, 5-(Thiophen-2-yl)furan-2-carbaldehyde.
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-Iodothiophene (CAS 3437-95-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1990835-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.