4,4'-bis[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo][1,1'-biphenyl]-2,2'-disulphonic acid, compound with N,N'-bis-o-tolylguanidine (1:2) price

4,4'-bis[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo][1,1'-biphenyl]-2,2'-disulphonic acid, compound with N,N'-bis-o-tolylguanidine (1:2) price, total count: 1