Ponceau 4R (E 124), 1g

2,5-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16704-47-3

2-Acetamido-5-nitropyridine, >98%, 5g

Mix #2