CIACIDYELLOW13 is a chemical compound registered under CAS number 1934-25-4, with the molecular formula C16H12 N4 O9 S2 . 3 Na and a molecular weight of about 534.36 g/mol. It is also known as 4,5-Dihydro-5-oxo-1-(2-sulfophenyl)-4-[(2-sulfophenyl)azo]-1H-pyrazole-3-carboxylic acid trisodium salt. ChemRoots supplies CIACIDYELLOW13 for laboratory research and bulk production; product code 388003. Send an inquiry for purity, packaging, price and lead time.