1,1’-Ethylidene-bis-(L-tryptophan)
(Synonyms: 粉色E) 目录号 : GC49768A potential impurity found in commercial preparations of L-tryptophan
Cas No.:132685-02-0
Sample solution is provided at 25 µL, 10mM.
Quality Control & SDS
- View current batch:
- Purity: >95.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
1,1’-Ethylidene-bis-(L-tryptophan) is a potential impurity found in commercial preparations of L-tryptophan.1 It increases the proliferation of EoL-3 eosinophilic leukemia cells, release of eosinophil cationic protein from isolated human peripheral blood eosinophils, and IL-5 production in isolated human T cells.2 1,1’-Ethylidene-bis-(L-tryptophan) (40 µg/kg) induces fascia thickening and increases mast cell infiltration, inflammation, and fibrosis in superficial adipose and panniculus carnosus tissues in mice as a model system of eosinophilia-myalgia syndrome.3
1.Trucksess, M.W.Separation and isolation of trace impurities in L-tryptophan by high-performance liquid chromatographyJ. Chromatogr.630(1-2)147-150(1993) 2.Yamaoka, K.A., Miyasaka, N., Inuo, G., et al.1,1’-Ethylidenebis(tryptophan) (Peak E) induces functional activation of human eosinophils and interleukin 5 production from T lymphocytes: Association of eosinophilia-myalgia syndrome with a L-tryptophan contaminantJ. Clin. Immunol.14(1)50-60(1994) 3.Love, L.A., Rader, J.I., Crofford, L.J., et al.Pathological and immunological effects of ingesting L-tryptophan and 1,1’-ethylidenebis (L-tryptophan) in Lewis ratsJ. Clin. Invest.91(3)804-811(1993)
Cas No. | 132685-02-0 | SDF | Download SDF |
别名 | 粉色E | ||
Canonical SMILES | CC(N1C2=CC=CC=C2C(C[C@H](N)C(O)=O)=C1)N3C4=CC=CC=C4C(C[C@H](N)C(O)=O)=C3 | ||
分子式 | C24H26N4O4 | 分子量 | 434.5 |
溶解度 | 1 M NaOH: soluble | 储存条件 | -20°C |
General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。 为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。 |
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Shipping Condition | 评估样品解决方案:配备蓝冰进行发货。所有其他可用尺寸:配备RT,或根据请求配备蓝冰。 |
制备储备液 | |||
1 mg | 5 mg | 10 mg | |
1 mM | 2.3015 mL | 11.5075 mL | 23.015 mL |
5 mM | 0.4603 mL | 2.3015 mL | 4.603 mL |
10 mM | 0.2301 mL | 1.1507 mL | 2.3015 mL |
第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量) | ||||||||||
给药剂量 | mg/kg | 动物平均体重 | g | 每只动物给药体积 | ul | 动物数量 | 只 | |||
第二步:请输入动物体内配方组成(配方适用于不溶于水的药物;不同批次药物配方比例不同,请联系GLPBIO为您提供正确的澄清溶液配方) | ||||||||||
% DMSO % % Tween 80 % saline | ||||||||||
计算重置 |
计算结果:
工作液浓度: mg/ml;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL,
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL saline,混匀澄清。
1. 首先保证母液是澄清的;
2.
一定要按照顺序依次将溶剂加入,进行下一步操作之前必须保证上一步操作得到的是澄清的溶液,可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。