... Cas No.: 305-84-0 99% Pure, high oxidative stability Description:L-Carnosine (beta-alanyl-L-histidine) is a dipeptide of ... .: 305-84-099% Pure, high oxidative stabilityQuality Properties: Appearancewhite powderSmellCharacteristicAssay (HPLC)99.0~101.0% (w/w)Specific rotation+20 ... 10ppmArsenicNMT 1ppmL-histidine(TLC)NMT 1.0%ß-alanine(TLC)NMT 0.1% L-Carnosine--99% Pure, high oxidative stability