Photoresist Chemicals TIANFU-CHEM – (6R,7R)-7-Amino-3-[(5-methyl-2H-tetrazol-2-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Cas：82549-51-7 Molecular Formula：C10H12N6O3S