2H-Thieno[2,3-e]-1,2-thiazine-3-carboxylic acid, 6-chloro-4-hydroxy-2-methyl-, methyl ester, 1,1-dioxide

This compound is a chemical compound used as a pharmaceutical intermediate. Its structure features a fused thieno-thiazine ring system with chloro, hydroxyl, and ester functional groups, contributing to its role in the synthesis of active pharmaceutical ingredients.