(2-Formyl-3-thienyl)boronic acid
Also known as: (2-Formyl-3-thienyl)boronic acid, (2-Formylthiophen-3-yl)boronic acid, (2-formyl-3-thiophenyl)boronic acid, 2-FORMYL-3-THIOPHENEBORONIC ACID, 2-FORMYLTHIOPHENE-3-BORONIC ACID, 2-Formyl-3-thiopheneboronic acid, 2-Formylthien-3-ylboronic acid, 2-Formylthiophen-3-ylboronic acid, 2-Formylthiophene-3-boronic acid, 3-Boronothiophene-2-carboxaldehyde, 3-Borono-2-formylthiophene, Boronic acid, B-(2-formyl-3-thienyl)-, MFCD01075678
(2-Formyl-3-thienyl)boronic acid (CAS 4347-31-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5BO3S and a molecular weight of 155.967 g/mol. Key properties include a melting point of 167-193 °C(lit.), a boiling point of 396.7±52.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 193.7±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4347-31-3
- Jingsj CID
- J-42486-2
- Molecular Formula
- C5H5BO3S
- Molecular Weight
- 155.967 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 167-193 °C(lit.) |
|---|---|
| Boiling Point | 396.7±52.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 193.7±30.7 °C |
| Exact Mass | 156.005249 |
| PSA | 85.77000 |
| LogP | 0.39 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.573 |
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-Formyl-3-thienyl)boronic acid?
The CAS number of (2-Formyl-3-thienyl)boronic acid is 4347-31-3.
What are the molecular formula and molecular weight of (2-Formyl-3-thienyl)boronic acid?
(2-Formyl-3-thienyl)boronic acid has molecular formula C5H5BO3S and molecular weight 155.967 g/mol.
What are the upstream and downstream products of (2-Formyl-3-thienyl)boronic acid?
For (2-Formyl-3-thienyl)boronic acid, Downstream Products: 3-Phenylthiophene-2-carboxylic acid, [3,3'-Bithiophene]-2,2'-dicarboxaldehyde.
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-Formyl-3-thienyl)boronic acid (CAS 4347-31-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42486-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.