Applications
2-Hydroxy-3-methoxy-5-nitrobenzaldehyde is used for the syntheses of zinc-selective spiropyran-based fluorescent and photoregenerable receptor, (E)-2,4-dihydroxy-N′-(2-hydroxy-3-methoxy-5-nitrobenzylidene)benzohydrazide dihydrate, ethyl 4-(8-methoxy-3′,3′-dimethyl-6-nitrospiro[chromene-2,2′-indoline]-1′-yl)butanoate and 1-(3-carbomethoxypropyl)-3-3-dimethyl-8-methoxy-6-nitrospiro[2H-1]-benzopyran-2,2-indoline.

Solubility
Slightly soluble in water.

Notes
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents. It is sensitive to air.