2,3-Dihydro-2-thioxo-4-thiazolepropanoic Acid is an intermediate in synthesizing [6R-[6α,7β(Z)]]-7-[[(2-Amino-4-thiazolyl)(methoxyimino)acetyl]amino]-3-[[[4-(2-carboxyethyl)-2-thiazolyl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid (A630540), an isomer of the antibiotic Cefodizime (C242865) which is is a third generation cephalosporin with a broad spectrum of antibacterial activity. Molecular Formula: C6H7NO2S2 Molecular Weight: 189.26