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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號碼:
分類程式碼代碼:
12352100
PubChem物質ID:
NACRES:
NA.22
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化驗
98%
形狀
liquid
折射率
n20/D 1.509 (lit.)
bp
95 °C/0.1 mmHg (lit.)
密度
1.15 g/mL at 25 °C (lit.)
SMILES 字串
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 密鑰
DFSFLZCLKYZYRD-UHFFFAOYSA-N
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一般說明
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。
應用
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。
訊號詞
Danger
危險分類
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
標靶器官
Respiratory system
儲存類別代碼
10 - Combustible liquids
水污染物質分類（WGK）
WGK 3
閃點（°F）
230.0 °F - closed cup
閃點（°C）
110 °C - closed cup
個人防護裝備
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
其他客户在看
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
The Journal of Organic Chemistry, 59, 4707-4707 (1994)
Journal of the Chemical Society. Perkin Transactions 1, 263-263 (1993)
Organic Syntheses, 69, 220-220 (1990)
E F Sherertz et al.
Archives of dermatological research, 280(1), 57-60 (1988-01-01)
Squaric acid diethylester and squaric acid dibutylester have been used in contact sensitization therapy of alopecia areata. This study investigated the application of these esters or squaric acid alone to hairless mouse and human skin in vitro to determine squaric
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