4-Bromo-2-methylthiophene
4-溴-2-甲基噻吩
Also known as: 2-Methyl-4-bromothiophene, 3-Bromo-5-methylthiophene, 2-Methyl-4-brom-thiophen, Thiophene, 4-bromo-2-methyl-, MFCD04116367
4-Bromo-2-methylthiophene (CAS 29421-92-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5BrS and a molecular weight of 177.062 g/mol. It is also known as 2-Methyl-4-bromothiophene, 3-Bromo-5-methylthiophene and 2-Methyl-4-brom-thiophen. Key properties include a boiling point of 180.4±20.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 62.9±21.8 °C. It is classified under GHS with signal word Danger and hazard statements 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.
- 29421-92-9
- Jingsj CID
- J-9890-6
- Molecular Formula
- C5H5BrS
- Chinese Name
- 4-溴-2-甲基噻吩
- Molecular Weight
- 177.062 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 180.4±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 62.9±21.8 °C |
| Exact Mass | 175.929520 |
| PSA | 28.24000 |
| LogP | 3.08 |
| Vapor Pressure | 1.2±0.3 mmHg at 25°C |
| Refractive Index | 1.582 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H318 — Causes serious eye damage
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 4-Bromo-2-methylthiophene?
The CAS number of 4-Bromo-2-methylthiophene is 29421-92-9.
What are the molecular formula and molecular weight of 4-Bromo-2-methylthiophene?
4-Bromo-2-methylthiophene has molecular formula C5H5BrS and molecular weight 177.062 g/mol.
Is 4-Bromo-2-methylthiophene hazardous?
4-Bromo-2-methylthiophene has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage.
What are the upstream and downstream products of 4-Bromo-2-methylthiophene?
For 4-Bromo-2-methylthiophene, Upstream Products: 2-Bromo-5-methylthiophene, 2-Methylthiophene; Downstream Products: 5-Methylthiophene-3-carbonitrile, 2-bromo-5-methylthiophene-3-carboxylic acid, Methyl 5-methyl-3-thiophenecarboxylate.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Bromo-2-methylthiophene (CAS 29421-92-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-9890-6 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.