CAS 2425-85-6 appears in our catalog under these names: Toluidine Red, Toluidine Red 100 µg/mL in Acetone, 1–(4–Methyl–2–Nitrophenylazo)–2–Naphthol, C.I. Pigment Red 3 97%, 1-[2-(4-methyl-2-nitrophenyl)hydrazin-1-ylidene]-1,2-dihydronaphthalen-2-one, 98%+(LC-MS),RG. Offered by: TRC, Dr. Ehrenstorfer, GLPBio, Ambeed, HPC Standards. Available pack sizes: 10g, 1g, 25g, 25mg, 1ml, 5g, 100g, 1x25mg.