4-Dimethylamino benzaldehyde Molecular Formula : C9H11NO CAS : 100-10-7 Quality Index : 1.Appearance: White to Yellowish flake-shaped crystal 2.Content: ≥99.0% 3.Loss on drying: ≤1.0% 4.Melting Point: 71.0-75.0°C Purpose : For determination of urinary choline, indole, alkaloids, tryptophan, hydrogen peroxide, arsenic where the sodium-ming, o-amino benzoic acid, antipyrine Linmark angle base and so on. It also can be used for differences in serum rash and scarlet fever. The intermediate of dye.