2-Thiopheneboronic acid
Also known as: Thiophene-2-boronic acid, 2-Thienylboronic acid, Thiophen-2-ylboronic acid, Thienylboronic acid, Boronic acid, B-2-thienyl-
2-Thiopheneboronic acid (CAS 6165-68-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5BO2S and a molecular weight of 127.957 g/mol. Key properties include a melting point of 138-140 °C(lit.), a boiling point of 287.9±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 127.9±25.1 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6165-68-0
- Jingsj CID
- J-48800-6
- Molecular Formula
- C4H5BO2S
- Molecular Weight
- 127.957 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 138-140 °C(lit.) |
|---|---|
| Boiling Point | 287.9±32.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 127.9±25.1 °C |
| Exact Mass | 128.010330 |
| PSA | 68.70000 |
| LogP | 1.27 |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.562 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- 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-Thiopheneboronic acid?
The CAS number of 2-Thiopheneboronic acid is 6165-68-0.
What are the molecular formula and molecular weight of 2-Thiopheneboronic acid?
2-Thiopheneboronic acid has molecular formula C4H5BO2S and molecular weight 127.957 g/mol.
Is 2-Thiopheneboronic acid hazardous?
2-Thiopheneboronic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 2-Thiopheneboronic acid?
For 2-Thiopheneboronic acid, Upstream Products: 2-Bromothiophene, 2-Iodothiophene, 2-Thiopheneboronic acid MIDA ester; Downstream Products: 3'-Bromo-2,2':5',2''-terthiophene, [2,2′-Bithiophene]-5-carbaldehyde, 2-(2-Thienyl)benzoic 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-Thiopheneboronic acid (CAS 6165-68-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48800-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.