5-Methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid

5-甲基-4-氧代-3,4-二氢噻吩并[2,3-d]嘧啶-6-甲酸

Also known as: 5-Methyl-4-oxo-3,4-dihydro-thieno[2,3-d]pyrimidine-6-carboxylic acid, 5-Methyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylic acid, 5-methyl-4-oxo-1,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid, Thieno[2,3-d]pyrimidine-6-carboxylic acid, 1,4-dihydro-5-methyl-4-oxo-, MFCD00463620

5-Methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid (CAS 101667-97-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6N2O3S and a molecular weight of 210.21000 g/mol. It is also known as 5-Methyl-4-oxo-3,4-dihydro-thieno[2,3-d]pyrimidine-6-carboxylic acid, 5-Methyl-4-oxo-3H-thieno[2,3-d]pyrimidine-6-carboxylic acid and 5-methyl-4-oxo-1,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid. Key properties include a boiling point of 571.8ºC at 760mmHg, a density of 1.76g/cm3 and a flash point of 299.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

101667-97-4

Jingsj CID

J-31669-5

Molecular Formula

C₈H₆N₂O₃S

Chinese Name

5-甲基-4-氧代-3,4-二氢噻吩并[2,3-d]嘧啶-6-甲酸

Molecular Weight

210.21000 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026