Thieno[2,3-d]pyrimidine-6-carboxylic acid, 1,4-dihydro-2,5-dimethyl-4-oxo-, ethyl ester

2,5-二甲基-4-氧代-3,4-二氢-噻吩并[2,3-d]嘧啶-6-羧酸乙酯

Also known as: ethyl 2,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate, ethyl 2,5-dimethyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylate, 3,4-Dihydro-2,5-dimethyl-4-oxothieno[2,3-d]pyrimidin-6-carbonsaeure-ethylester, NSC 349832

Thieno[2,3-d]pyrimidine-6-carboxylic acid, 1,4-dihydro-2,5-dimethyl-4-oxo-, ethyl ester (CAS 23903-53-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H12N2O3S and a molecular weight of 252.29000 g/mol. It is also known as ethyl 2,5-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylate, ethyl 2,5-dimethyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylate and 3,4-Dihydro-2,5-dimethyl-4-oxothieno[2,3-d]pyrimidin-6-carbonsaeure-ethylester. Key properties include a boiling point of 340.3ºC at 760 mmHg, a density of 1.44g/cm3 and a flash point of 159.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

23903-53-9

Jingsj CID

J-1072978-4

Molecular Formula

C₁₁H₁₂N₂O₃S

Chinese Name

2,5-二甲基-4-氧代-3,4-二氢-噻吩并[2,3-d]嘧啶-6-羧酸乙酯

Molecular Weight

252.29000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026