![Molecular structure of 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine (CAS 259139-19-0)](/images/chem_structures_svg/103/259139-19-0.svg)
3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine
Also known as: 2H-thieno[3,4-b][1,4]dioxepin, 3,3-diethyl-3,4-dihydro-, 3,4-(2',2'-diethylpropylene)dioxythiophene, 3,4-(2,2-diethylpropylene)dioxythiophene, 3,3-diethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepin, EDOT analog, 3,3-diethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine
3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine (CAS 259139-19-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H16O2S and a molecular weight of 212.30900 g/mol. Key properties include a boiling point of 276.101ºC at 760 mmHg, a density of 1.109 g/mL at 25ºC and a flash point of 120.782ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 259139-19-0
- Jingsj CID
- J-1104618-7
- Molecular Formula
- C11H16O2S
- Molecular Weight
- 212.30900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 276.101ºC at 760 mmHg |
|---|---|
| Density | 1.109 g/mL at 25ºC |
| Flash Point | 120.782ºC |
| Exact Mass | 212.08700 |
| PSA | 46.70000 |
| LogP | 3.32570 |
| Vapor Pressure | 0.008mmHg at 25°C |
| Refractive Index | n20/D 1.534 |
Frequently Asked Questions
What is the CAS number of 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine?
The CAS number of 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine is 259139-19-0.
What are the molecular formula and molecular weight of 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine?
3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine has molecular formula C11H16O2S and molecular weight 212.30900 g/mol.
What are the upstream and downstream products of 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine?
For 3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine, Upstream Products: 3,4-Dimethoxythiophene, 2,2-Diethyl-1,3-propanediol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,3-diethyl-2,4-dihydrothieno[3,4-b][1,4]dioxepine (CAS 259139-19-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1104618-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.