689203
3,4-二羟基-3-环丁烯-1,2-二酮
Arxada quality, 98.50-101.00 % (w/w) (HPLC)
别名:
方形酸
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关于此项目
线性分子式:
(HO)2C4(=O)2
化学文摘社编号:
分子量:
114.06
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
220-761-4
Beilstein/REAXYS Number:
774275
MDL number:
InChI
1S/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H
InChI key
PWEBUXCTKOWPCW-UHFFFAOYSA-N
SMILES string
OC1=C(O)C(=O)C1=O
quality
Arxada quality
manufacturer/tradename
Arxada AG
concentration
98.50-101.00 % (w/w) (HPLC)
impurities
≤0.5 % (w/w) water (Karl Fischer)
mp
>300 °C (lit.)
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1B
存储类别
8A - Combustible corrosive hazardous materials
wgk
WGK 3
flash_point_f
374.0 °F
flash_point_c
190 °C
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
法规信息
新产品
此项目有
Eun-Mi Lee et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 95, 25-28 (2012-05-23)
A squarylium (SQ) dye was synthesized by the reaction between squaric acid and 2,3,3-trimethylindolenine and its anion sensing properties were investigated using absorption and emission spectroscopy. This chemosensor exhibited high selectivity for CN(-) as compared with F(-), CH(3)CO(2)(-), Br(-), H(2)PO(4)(-)
Bojidarka B Ivanova et al.
Amino acids, 39(1), 309-314 (2010-01-19)
The title compound, 2-(phenylethyl)ammonium hydrogensquarate hemihydrate, was synthesized and structurally and spectroscopically characterized by a single crystal X-ray diffraction and solid-state polarized IR spectroscopy of oriented colloids in a nematic host. The crystal structure consists of two crystallographically independent 2-(phenylethyl)ammonium
Charles M Marson
Chemical Society reviews, 40(11), 5514-5533 (2011-08-13)
Contemporary medicinal chemistry faces diverse challenges from several directions, including the need for both potency and specificity of any therapeutic agent; the increasingly demanding requirements of low toxicity shown across all patients treated; and the need for novelty in intellectual
Vijayakumar Ramalingam et al.
Organic letters, 10(15), 3315-3318 (2008-07-02)
Environment-sensitive binding of anions to synthetic receptors is important for the functional mimicry of ion channels. We describe new squaramide-based chloride ion receptors whose anion binding cavity can be opened and closed by using carbonyl groups as valves. In nonpolar
Frederik Wurm et al.
Chemical communications (Cambridge, England), 49(71), 7815-7817 (2013-07-26)
A water-soluble squaric acid dialkyl diester derivative is presented, which enables one-pot, two-step amine-selective protein conjugation reactions with (functional) amines in water. This reagent not only allows all-aqueous protein modifications, but also tolerates e.g. hydroxyl groups and can also be
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