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Merck
CN

310778

Sigma-Aldrich

3,4-二乙氧基-3-环丁烯-1,2-二酮

98%

别名:

四方酸二乙酯, 方酸二乙酯

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About This Item

线性分子式:
(C2H5O)2C4(=O)2
CAS号:
分子量:
170.16
Beilstein:
640626
MDL编号:
UNSPSC代码:
12352100
PubChem化学物质编号:
NACRES:
NA.22

质量水平

方案

98%

表单

liquid

折射率

n20/D 1.509 (lit.)

沸点

95 °C/0.1 mmHg (lit.)

密度

1.15 g/mL at 25 °C (lit.)

官能团

ether
ketone

SMILES字符串

CCOC1=C(OCC)C(=O)C1=O

InChI

1S/C8H10O4/c1-3-11-7-5(9)6(10)8(7)12-4-2/h3-4H2,1-2H3

InChI key

DFSFLZCLKYZYRD-UHFFFAOYSA-N

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一般描述

3,4-二乙氧基-3-环丁烯-1,2-二酮(方酸二乙酯)与糖胺(通过还原低聚糖形成)的反应已被研究。所形成的衍生物与氨基官能化的脂质、固体或蛋白相连。

应用

3,4-二乙氧基-3-环丁烯-1,2-二酮可用作合成呋喃酮和醌的起始材料。它会经过胺和不饱和有机硅烷的乙氧基取代。

象形图

Health hazardExclamation mark

警示用语:

Danger

危险分类

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

靶器官

Respiratory system

储存分类代码

10 - Combustible liquids

WGK

WGK 3

闪点(°F)

230.0 °F - closed cup

闪点(°C)

110 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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分析证书(COA)

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The Journal of Organic Chemistry, 59, 4707-4707 (1994)
O Blixt et al.
Carbohydrate research, 319(1-4), 80-91 (1999-10-16)
Reducing oligosaccharides were converted into their corresponding glycosylamines, and these were reacted with 3,4-diethoxy-3-cyclobuten-1,2-dione (squaric acid diethyl ester). The resulting derivatives could be linked to amino-functionalized lipids, solids, or proteins. Treatment of the obtained lipid or solid conjugates with aqueous
Sinthuja Jegatheeswaran et al.
Vaccines, 8(3) (2020-09-23)
The carbohydrate antigen dimeric Lewis X (DimLex), which accumulates in colonic and liver adenocarcinomas, is a valuable target to develop anti-cancer therapeutics. Using the native DimLex antigen as a vaccine would elicit an autoimmune response against the Lex antigen found
W A Kinney et al.
Journal of medicinal chemistry, 35(25), 4720-4726 (1992-12-21)
In this report, a novel bioisostere of the alpha-amino acid, 3,4-diamino-3-cyclobutene-1,2-dione, has been incorporated into a series of compounds which are NMDA antagonists. These compounds, which are achiral and easily prepared, demonstrated good affinity at the NMDA receptor by their
Organic Syntheses, 69, 220-220 (1990)

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