Date published: 2026-4-24

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Mordant orange 1 (CAS 2243-76-7)

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Alternate Names:
2-hydroxy-5-[(4-nitrophenyl)diazenyl]benzoic acid; 5-(4-Nitrophenylazo)salicylic acid; Alizarin Yellow R
Application:
Mordant orange 1 is an azoe dye used to detect aromatic amines
CAS Number:
2243-76-7
Molecular Weight:
287.23
Molecular Formula:
C13H9N3O5
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Mordant orange 1 is an azoe dye used to detect aromatic amines. Mordant orange 1 has an absorption λ max of 385nm.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Mordant orange 1, 25 g

sc-206009
25 g
$31.00

Mordant orange 1, 100 g

sc-206009A
100 g
$91.00