Next time when you call a service provider whom you have chosen from JUST DIAL check your balance in your phone.The phone will be ringing & no one answers but when you disconnect the call your balance will be deducted without speaking.
L-TRYPTOPHAN Overview Information. L-tryptophan is an amino acid, a protein building block that can be found in many plant and animal proteins. L-tryptophan is called an âessentialâ amino acid because the body canât make it. It must be acquired from food.
Selective modification of tryptophan containing peptides. Savige WE, Fontana A. Tryptophan is readily oxidized to oxindolylalanine (2-hydroxytryptophan) in good yield on treatment in acetic acid solution with a mixture of dimethyl sulfoxide (DMSO) and concentrated aqueous HCl at room temperature.