3-Formylthiophene-2-boronic acid
Also known as: (3-Formyl-2-thienyl)boronic acid, (3-Formylthiophen-2-yl)boronic acid, 2-Boronothiophene-3-carboxaldehyde, 3-Formyl-2-thiopheneboronic acid, 3-Formylthiophen-2-ylboronic acid, Boronic acid, B-(3-formyl-2-thienyl)-, Thiophene-2-boronic acid-3-carbaldehyde, MFCD01075679
3-Formylthiophene-2-boronic acid (CAS 17303-83-2) 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 330 °C (dec.)(lit.), a boiling point of 381.2±52.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 184.4±30.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17303-83-2
- Jingsj CID
- J-37018-3
- 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 | 330 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 381.2±52.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 184.4±30.7 °C |
| Exact Mass | 156.005249 |
| PSA | 85.77000 |
| LogP | 0.38 |
| Vapor Pressure | 0.0±0.9 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 3-Formylthiophene-2-boronic acid?
The CAS number of 3-Formylthiophene-2-boronic acid is 17303-83-2.
What are the molecular formula and molecular weight of 3-Formylthiophene-2-boronic acid?
3-Formylthiophene-2-boronic acid has molecular formula C5H5BO3S and molecular weight 155.967 g/mol.
What are the upstream and downstream products of 3-Formylthiophene-2-boronic acid?
For 3-Formylthiophene-2-boronic acid, Downstream Products: 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-3-carbaldehyde, 3-Thiophenemethanol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Formylthiophene-2-boronic acid (CAS 17303-83-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37018-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.