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2-Nitrobenzaldehyde is an organic aromatic compound containing a nitro group ortho to formyl. 2-Nitrobenzaldehyde once was produced as an intermediate in the synthesis of the popular dye Indigo.
N 1707 2-Nitro benzaldehyde, GR 99%+ Cas 552-89-6 - used to yield other important compounds based on indigo, such as indigo carmine.