Ethyl 5-methyl-3-(methylthio)-4,4-dioxo-4,5-dihydro-4λ6-benzo[c]thieno[3,4-e][1,2]thiazine-1-carboxylate

5-甲基-3-(甲基硫代)-4,4-二氧代-4,5-二氢-4λ6-苯并[c]噻吩并[3,4-e][1,2]噻嗪-1-羧酸乙酯

Also known as: Ethyl 5-Me-3-(methylthio)-4,4-dioxo-5H-thieno[3,4-c][2,1]benzothiazine-1-carboxylate, Ethyl 4,4-dioxo-5-methyl-3-(methylthio)thieno(3,4-c)benzo(2,1)thiazine-1-carboxylate, Ethyl 5-methyl-3-(methylthio)-4,4-dioxo-4,5-dihydro-4λ6-benzo[c]thieno[3,4-e][1,2]thiazine-1-carboxylate, Ethyl 5-methyl-3-methylsulfanyl-4,4-dioxothieno[3,4-c][2,1]benzothiazine-1-carboxylate, Ethyl 8-methyl-5-(methylsulfanyl)-7,7-dioxo-4,7λ6-dithia-8-azatricyclo[7.4.0.0^{2,6}]trideca-1(9),2,5,10,12-pentaene-3-carboxylate, MFCD00085073, BUTTPARK 94\04-51, hms554l04

Ethyl 5-methyl-3-(methylthio)-4,4-dioxo-4,5-dihydro-4λ6-benzo[c]thieno[3,4-e][1,2]thiazine-1-carboxylate (CAS 175276-42-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H15NO4S3 and a molecular weight of 369.47900 g/mol. It is also known as Ethyl 5-Me-3-(methylthio)-4,4-dioxo-5H-thieno[3,4-c][2,1]benzothiazine-1-carboxylate, Ethyl 4,4-dioxo-5-methyl-3-(methylthio)thieno(3,4-c)benzo(2,1)thiazine-1-carboxylate and Ethyl 5-methyl-3-methylsulfanyl-4,4-dioxothieno[3,4-c][2,1]benzothiazine-1-carboxylate. Key properties include a melting point of 190ºC, a boiling point of 588.4ºC at 760 mmHg, a density of 1.5g/cm3 and a flash point of 309.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

175276-42-3

Jingsj CID

J-1099369-7

Molecular Formula

C₁₅H₁₅NO₄S₃

Chinese Name

5-甲基-3-(甲基硫代)-4,4-二氧代-4,5-二氢-4λ6-苯并[c]噻吩并[3,4-e][1,2]噻嗪-1-羧酸乙酯

Molecular Weight

369.47900 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026