![Molecular structure of 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 250726-93-3)](/images/chem_structures_svg/435/250726-93-3.svg)
2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Also known as: 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxine, 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5-boronic acid pinacol ester, 3,4-Ethylenedioxythiophene-2-boronic acid pinacol ester, 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5-boronic acid pinacol ester 97%, 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxoborolane, 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxane, 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-2,3-dihydrothieno[3,4-b][1,4]dioxine, Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 250726-93-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H17BO4S and a molecular weight of 268.13700 g/mol. Key properties include a melting point of 93ºC, a boiling point of 372.9ºC at 760mmHg, a density of 1.21g/cm3 and a flash point of 179.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 250726-93-3
- Jingsj CID
- J-808608-6
- Molecular Formula
- C12H17BO4S
- Molecular Weight
- 268.13700 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 93ºC |
|---|---|
| Boiling Point | 372.9ºC at 760mmHg |
| Density | 1.21g/cm3 |
| Flash Point | 179.3ºC |
| Exact Mass | 268.09400 |
| PSA | 65.16000 |
| LogP | 1.81850 |
| Vapor Pressure | 2E-05mmHg at 25°C |
| Refractive Index | 1.53 |
| Storage Conditions | 2-8°C |
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-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?
The CAS number of 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is 250726-93-3.
What are the molecular formula and molecular weight of 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?
2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane has molecular formula C12H17BO4S and molecular weight 268.13700 g/mol.
What are the upstream and downstream products of 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane?
For 2-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Upstream Products: 2,3-Dimethyl-2,3-butanediol, Triisopropyl borate, 3,4-Ethylenedioxythiophene.
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-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 250726-93-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-808608-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.