Salicylazoiminopyridine

• CAT Number: R054994
• CAS Number: 66030-25-9
• Molecular Formula: C₁₈H₁₄N₄O₃
• Molecular Weight: 334.33
• Purity: ≥95%
• Synonyms: 2-Hydroxy-5-[2-[4-(2-imino-1(2H)-pyridinyl)phenyl]diazenyl]benzoic Acid; 2-Hydroxy-5-[[4-(2-imino-1(2H)-pyridinyl)phenyl]azo]benzoic Acid; Sulfasalazine Impurity C
• Storage: -80°C

Salicylazoiminopyridine (Cat No.: R054994) is an azo dye compound featuring a salicyl (2-hydroxyphenyl) group linked via an azo (-N=N-) bond to an iminopyridine moiety. It is primarily used as a metal ion indicator or complexometric reagent in analytical chemistry due to its strong chelating ability and color change upon binding to metal ions. Its conjugated system allows for visible absorbance, making it useful in spectrophotometric assays. Salicylazoiminopyridine is especially effective in detecting transition metals such as iron, cobalt, and copper in solution.