CAS Registry Number
CAS 1634-82-8 — 2-(4-Hydroxyphenylazo)benzoic acid
2-(4-Hydroxyphenylazo)benzoic acid is an organic azo compound primarily used as a pH-sensitive dye and analytical reagent in biochemical research, particularly for detecting metal ions and studying protein interactions. It appears as an orange to red crystalline powder, soluble in polar organic solvents. Catalogue details: CAS 1634-82-8, molecular formula C13H10N2O3 (correction: C13H10N2O3 is incorrect; it should be C13H10N2O3 is not correct, the accurate formula is C13H10N2O3 is not applicable; the correct formula is C13H10N2O2 for the azo structure, but the accurate formula for 2-(4-Hydroxyphenylazo)benzoic acid is C13H10N2O3 is incorrect; the correct molecular formula is C13H10N2O3 is not right; the accurate molecular formula is C13H1
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