PONCEAU 4 R

Trisodium (8Z)-7-oxo-8-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-1,3-disulfonate

CAS NO: 2611-82-7

Ponceau 4R (also known as C.I. 16255,[1] Cochineal Red A,[1] C.I. Acid Red 18,[1] Brilliant Scarlet 3R