| Molecular Formula: | C9H11NO | 
| Structural Formula: | .jpg) | 
| Quality Index: | 1.Appearance: White to Yellowish flake-shaped crystal | 
| 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 use | 








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