Aspartame Impurity A, the diketopiperazine cyclo(Asp-Phe), is the major degradation product of aspartame in food, e.g. during heating. Hence, the pure material is an important reference substance for the analysis of foodstuffs containing this sweetener.
编号：186759
CAS号：5262-10-2
单字母：cyclo(DF)(main chain cyclo)
| 编号: | 186759 |
| 中文名称: | Aspartame-Related Compound A |
| 英文名: | Aspartame-Related Compound A |
| 英文同义词: | (2S,5S)-5-Benzyl-3,6-dioxo2-piperazineacetic acid, Aspartame-Related Compound A |
| CAS号: | 5262-10-2 |
| 单字母: | cyclo(DF)(main chain cyclo) |
| 三字母: | cyclo(Asp-Phe)(main chain cyclo) |
| 氨基酸个数: | 2 |
| 分子式: | C13H14N2O4 |
| 平均分子量: | 262.26 |
| 精确分子量: | 262.1 |
| 等电点(PI): | 6.26 |
| pH=7.0时的净电荷数: | -0.02 |
| 平均亲水性: | 0.25 |
| 疏水性值: | -0.35 |
| 外观与性状: | 白色粉末状固体 |
| 消光系数: | - |
| 来源: | 人工化学合成，仅限科学研究使用，不得用于人体。 |
| 纯度: | 95%、98% |
| 盐体系: | 可选TFA、HAc、HCl或其它 |
| 生成周期: | 2-3周 |
| 修饰类型: | 酰胺键成环 |
| 储存条件: | 负80℃至负20℃ |
| 标签: | 环二肽 |
Aspartame Impurity A, the diketopiperazine cyclo(Asp-Phe), is the major degradation product of aspartame in food, e.g. during heating. Hence, the pure material is an important reference substance for the analysis of foodstuffs containing this sweetener.
环二肽又叫2,5-二酮哌嗪的衍生物,作为环肽成员中最小的一类环肽，专肽生物有部分环二肽的现货，也可以根据实验需求，定制含D型与L型，S与R构型的氨基酸。
| DOI | 名称 | |
|---|---|---|
| 10.1021/jf051313m | Structures, sensory activity, and dose/response functions of 2,5-diketopiperazines in roasted cocoa nibs (Theobroma cacao) | 下载 |
| 10.1016/j.jpba.2009.09.044 | Capillary electrophoresis analysis of the degradation of the aspartyl tripeptide Phe-Asp-GlyOH at pH 2.0 and 7.4 under forced conditions | 下载 |
