3,4-Propylenedioxythiophene
Also known as: ProDOT, 2H-Thieno[3,4-b][1,4]dioxepin, 3,4-dihydro-, 3,4-Dihydro-2H-thieno[3,4-b][1,4]dioxepine, 3,4-(propane-1,3-diyldioxy)thiophene, 3,4-Dihydro-2H-thieno[3,4-b][1,4]dioxepin
3,4-Propylenedioxythiophene (CAS 155861-77-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H8O2S and a molecular weight of 156.20200 g/mol. Key properties include a melting point of 79-83ºC, a boiling point of 229.704ºC at 760 mmHg, a density of 1.244g/cm3 and a flash point of 92.722ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 155861-77-1
- Jingsj CID
- J-1309307-7
- Molecular Formula
- C7H8O2S
- Molecular Weight
- 156.20200 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 79-83ºC |
|---|---|
| Boiling Point | 229.704ºC at 760 mmHg |
| Density | 1.244g/cm3 |
| Flash Point | 92.722ºC |
| Exact Mass | 156.02500 |
| PSA | 46.70000 |
| LogP | 1.90940 |
| Vapor Pressure | 0.104mmHg at 25°C |
| Refractive Index | 1.55 |
Frequently Asked Questions
What is the CAS number of 3,4-Propylenedioxythiophene?
The CAS number of 3,4-Propylenedioxythiophene is 155861-77-1.
What are the molecular formula and molecular weight of 3,4-Propylenedioxythiophene?
3,4-Propylenedioxythiophene has molecular formula C7H8O2S and molecular weight 156.20200 g/mol.
What are the upstream and downstream products of 3,4-Propylenedioxythiophene?
For 3,4-Propylenedioxythiophene, Upstream Products: 3,4-Propylenedioxythiophene-2,5-dicarboxylic acid, 3,4-Dimethoxythiophene, 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. "3,4-Propylenedioxythiophene (CAS 155861-77-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1309307-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.