Sweetening chrysanthemum P.E CAS No. : 91722-21-3

Product name:2-Nitrobenzaldehyde
Synonyms:o-Nitrobenzaldehyde;Benzaldehyde, 2-nitro
CAS:552-89-6
EINECS:209-025-3
MF:C7H5NO3
MW:151.12

Melting point:41-44oC
Boiling point:153oC(23TORR)
Appearence:light yellow crystalline powder or luminous yellow needle-like crystal
Assay:99%


Uses:
2-Nitrobenzaldehyde is an intermediate in an early route to Indigo, a water-insoluble dye commonly used to dye jeans and other fabrics. In the Baeyer-Drewson indigo synthesis, 2-nitrobenzaldehyde condenses with acetone in basic aqueous solution to yield indigo in a one-pot synthesis.The method was abandoned in the early part of the 20th century, being replaced by routes from aniline.

Given its two relatively reactive groups, 2-nitrobenzaldehyde is a potential starting material for other compounds. Substituted 2-nitrobenzaldehydes can also be used to yield other important compounds based on indigo, such as Indigo carmine.

2-Nitrobenzaldehyde has been shown to be a useful photoremovable protecting group for various funcionalities.


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