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1,1’-Ethylidene-bis-(L-tryptophan)

(Synonyms: 粉色E) 目录号 : GC49768

A potential impurity found in commercial preparations of L-tryptophan

1,1’-Ethylidene-bis-(L-tryptophan) Chemical Structure

Cas No.:132685-02-0

规格 价格 库存 购买数量
1 mg
¥397.00
现货
5 mg
¥1,888.00
现货
10 mg
¥2,776.00
现货
25 mg
¥4,965.00
现货

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Sample solution is provided at 25 µL, 10mM.

产品文档

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产品描述

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 &#181g/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)

Chemical Properties

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。
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。

溶解性数据

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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
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