![Molecular structure of 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one (CAS 99429-78-4)](/images/chem_structures_svg/134/99429-78-4.svg)
4-Hydroxythieno[2,3-b]pyridin-6(7H)-one
Also known as: 4-hydroxy-7H-thieno[2,3-b]pyridin-6-one, 4-hydroxythieno[2,3-b]pyridine-6(7H)-one, Thieno[2,3-b]pyridin-6(7H)-one, 4-hydroxy-, 4-Hydroxythieno[2,3-b]pyridin-6(7H)
4-Hydroxythieno[2,3-b]pyridin-6(7H)-one (CAS 99429-78-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5NO2S and a molecular weight of 167.185 g/mol. Key properties include a boiling point of 439.7±45.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 219.7±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 99429-78-4
- Jingsj CID
- J-1522684-3
- Molecular Formula
- C7H5NO2S
- Molecular Weight
- 167.185 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 439.7±45.0 °C at 760 mmHg |
|---|---|
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 219.7±28.7 °C |
| Exact Mass | 167.004105 |
| PSA | 81.59000 |
| LogP | 1.49 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.707 |
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 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one?
The CAS number of 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one is 99429-78-4.
What are the molecular formula and molecular weight of 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one?
4-Hydroxythieno[2,3-b]pyridin-6(7H)-one has molecular formula C7H5NO2S and molecular weight 167.185 g/mol.
What are the upstream and downstream products of 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one?
For 4-Hydroxythieno[2,3-b]pyridin-6(7H)-one, Upstream Products: tert-butyl 2-aminothiophene-3-carboxylate; Downstream Products: Thieno[2,3-b]pyridine, 4,6-Dichlorothieno[2,3-b]pyridine, 6-chloro-4-methoxythieno[2,3-b]pyridine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Hydroxythieno[2,3-b]pyridin-6(7H)-one (CAS 99429-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1522684-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.