3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid
3,5-二甲基-4-氧代-3,4-二氢噻吩并[2,3-d]嘧啶-6-羧酸
Also known as: 3,5-DIMETHYL-4-OXO-3,4-DIHYDROTHIENO[2,3-D]PYRIMIDINE-6-CARBOXYLIC ACID, 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid(SALTDATA: FREE), 3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid, 3,5-dimethyl-4-oxothieno[2,3-d]pyrimidine-6-carboxylic acid, 3,5-Dimethyl-4-oxo-3,4-dihydro-thieno[2,3-d]pyrimidine-6-carboxylic acid, AKOS BB612, AKOS BBR-004426, CHEMBRDG-BB 9064730, OTAVA-BB 7015170011, OTAVA-BB BB7015170011
3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 439138-78-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O3S and a molecular weight of 224.23600 g/mol. It is also known as 3,5-DIMETHYL-4-OXO-3,4-DIHYDROTHIENO[2,3-D]PYRIMIDINE-6-CARBOXYLIC ACID, 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid(SALTDATA: FREE) and 3,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylic acid. Key properties include a boiling point of 484.8ºC at 760 mmHg, a density of 1.59g/cm3 and a flash point of 247ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 439138-78-0
- Jingsj CID
- J-1132679-9
- Molecular Formula
- C9H8N2O3S
- Chinese Name
- 3,5-二甲基-4-氧代-3,4-二氢噻吩并[2,3-d]嘧啶-6-羧酸
- Molecular Weight
- 224.23600 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 484.8ºC at 760 mmHg |
|---|---|
| Density | 1.59g/cm3 |
| Flash Point | 247ºC |
Frequently Asked Questions
What is the CAS number of 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid?
The CAS number of 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid is 439138-78-0.
What are the molecular formula and molecular weight of 3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid?
3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid has molecular formula C9H8N2O3S and molecular weight 224.23600 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 439138-78-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1132679-9 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.