質(zhì)量標(biāo)準(zhǔn): 項(xiàng)目 生物學(xué)級(jí)
(BR)
外觀Appearance : 白色晶體或結(jié)晶粉末
含量(以干基計(jì)on dried substance)): 98-102%
比旋光Specific optical rotation[a]20D: +14.5~+16.5
透光率: ≥95%
干燥失重Loss on drying (105℃ 4hr): ≤4.5%
硫酸鹽灰分Sulfated ash: ≤0.2%
PH: 4.5-6.0
砷(以As計(jì)): ≤3ppm
重金屬Heavy metals (以Pb計(jì)): ≤10ppm
灼燒殘?jiān)?nbsp; ≤0.2%
其他相關(guān)物: ≤2.0%
5-芐基-3.6-二氧-2-哌嗪乙酸: ≤1.5%
5-benzyl-3,6-dioxo-2-piperazineacetic acid