5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one

Also known as: 5,6-Dimethyl-3H-thieno[2,3-d]pyrimidin-4-one, 5,6-Dimethylthieno[2,3-d]pyrimidin-4(1H)-one, AKOS 91440, AKOS B020883, AKOS MSC-0512, ART-CHEM-BB B020883, MFCD00463622, OTAVA-BB BB0127460562, TIMTEC-BB SBB009541

5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 18593-44-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8N2OS and a molecular weight of 180.22700 g/mol. Key property: a boiling point of 428.3±45.0°C at 760 mmHg. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18593-44-7
Jingsj CID: J-47436-2
Molecular Formula: C₈H₈N₂OS
Molecular Weight: 180.22700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	428.3±45.0°C at 760 mmHg
Exact Mass	180.03600
PSA	73.99000
LogP	1.60140

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 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one?

The CAS number of 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one is 18593-44-7.

What are the molecular formula and molecular weight of 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one?

5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one has molecular formula C8H8N2OS and molecular weight 180.22700 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 18593-44-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47436-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.