![Molecular structure of thieno[2,3-d]pyrimidine-2,4-diol (CAS 18740-38-0)](/images/chem_structures_svg/089/18740-38-0.svg)
thieno[2,3-d]pyrimidine-2,4-diol
Also known as: thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione, 1H-thieno[2,3-d]pyrimidine-2,4-dione, 2,4-dihydroxythieno[2,3-d]pyrimidine, thieno<2,3-d>pyrimidine-2,4-dione
thieno[2,3-d]pyrimidine-2,4-diol (CAS 18740-38-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H4N2O2S and a molecular weight of 168.173 g/mol. Key properties include a melting point of 322°C and a density of 1.5±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18740-38-0
- Jingsj CID
- J-1112019-7
- Molecular Formula
- C6H4N2O2S
- Molecular Weight
- 168.173 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 322°C |
|---|---|
| Density | 1.5±0.1 g/cm3 |
| Exact Mass | 167.999344 |
| PSA | 94.48000 |
| LogP | 0.90 |
| Refractive Index | 1.625 |
| 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 thieno[2,3-d]pyrimidine-2,4-diol?
The CAS number of thieno[2,3-d]pyrimidine-2,4-diol is 18740-38-0.
What are the molecular formula and molecular weight of thieno[2,3-d]pyrimidine-2,4-diol?
thieno[2,3-d]pyrimidine-2,4-diol has molecular formula C6H4N2O2S and molecular weight 168.173 g/mol.
What are the upstream and downstream products of thieno[2,3-d]pyrimidine-2,4-diol?
For thieno[2,3-d]pyrimidine-2,4-diol, Upstream Products: Chlorosulfonyl isocyanate, Methyl 2-aminothiophene-3-carboxylate, Urea; Downstream Products: 2,4-Dichlorothieno[2,3-d]pyrimidine, 2-Chloro-4-(morpholin-4-yl)thieno[2,3-d]pyrimidine-6-carboxaldehyde.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "thieno[2,3-d]pyrimidine-2,4-diol (CAS 18740-38-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1112019-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.