9301-0658 AGILENT 58 Fused silica needle syringe 10ul9301-0678 AGILENT 58 Syringe, 1725RN9301-0713 AGILENT 58 Syringe 10ul straight, FN 23/42/HP9301-0714 AGILENT 58 Syringe, 10ul straight, FN, 26s/42/HP9301-0718 AGILENT 58 20mm silver alum safety crimp cap 100pk9301-0719 AGILENT 58 ...
The purification was performed by silica gel column chromatography (cyclohexane-EtOAc, 75:25) to afford C18-EGCG (7.6 g, 53%) as a brown solid. 1H NMR (Acetone-d6, 400 MHz): δ = 0.87 (t, J = 7.4 Hz, 3H), 1.20–1.35 (m, 30H), 1.35–1.45 (m, 1H), 1.62–1.75 (m, 1H...
1854年,Bechamp首先报道了利用铁粉还原芳香硝基化合物合成芳香伯胺反应,此反应被称为Bechamp还原反应。制备芳胺一般而言,最干净和简便的还原方法就是通过Pd/C或Raney Ni加氢,但是当分子内存在对加氢敏感的官能团,如:卤素(Cl, Br and I; F 对加氢...
After optimization of all chromatographic conditions, near baseline separation of the nine carboxylic acids under investigation was achieved with a 2.5 mL/min flow rate on a 5 micron C18 silica column (100 x 4.6 mm) in under 20 min. The modified stationary phase showed an excellent capability ...
Ketothioester (8). To a stirred mixture of chalcone 6 (0.1 mmol) and thiourea 5 (10 mol %) in ether (0.5 mL) was added thioacetic acid (0.2 mmol) and after 3 h stirring at r.t., chromatography (silica gel, EA/hexane1:20–1:3) gave 8...
HAIR POWDER The present invention relates to hair powder which can mattify greasy and oily hair of a user due to not being able to wash the hair. Specifically, the hair powder contains eco corn starch, polishing silica, jojoba oil, argan oil, aroma ... HAN, DA HYUN,MOON, SEON HO 被引...
The waveguide is formed of a rib of sputtered tantalum pentoxide on top of oxidized silicon with an over-cladding of silica. Emission at a wavelength of 1025nm ... A Aghajani,GS Murugan,NP Sessions,... - 《Optics Letters》 被引量: 5发表: 2015年...
Silica nanopowderThe preparation of magnetic nanoparticles (MNPs) coated with a layer of octadecyl group-modified silica containing multiwalled carbon nanotubes (MWCNTs) is described. Synthesis was accomplished by in-situ high temperature decomposition of the precursors ferric ion, octadecyltrichlorosilane ...
Silica nanopowderThe preparation of magnetic nanoparticles (MNPs) coated with a layer of octadecyl group-modified silica containing multiwalled carbon nanotubes (MWCNTs) is described. Synthesis was accomplished by in-doi:10.1007/s00604-015-1722-2Moreno, Virginia...
Preparation of hydrophobic silica powderPROBLEM TO BE SOLVED: To provide a method for efficiently producing a hydrophobic silica powder excellently redispersible into an organic solvent. SOLUTION: The method for producing the hydrophobic silica powder comprises the hydrophobization step of obtaining a ...