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The oxidation of glycine using N-bromosuccinimide (NBrS) has been studied for different pH’s values. With respect to both substrate and oxidant, the reaction presents a consecutive-first order reaction. It is noted that the rate of reaction increases with increasing the manganese ion concentration. Addition of reaction product (succunumide) slightly affects the oxidation reaction rate. The protonated Br+ or NBrS and NBrS are used to be the reactive species of the N-bromosuccinimide. Furthermore, intermediate compounds are noticed through the reaction. Finally, a mechanism for the oxidation reaction is suggested in this work. [ABSTRACT FROM AUTHOR]