Structure of 12.BETA.-O-acetyltomentogenin and hypothetic... The structures of three new polyoxypregnane derivatives, dibenzoylgagaimol, gagaimol-7-methylether, and 7尾-methoxysarcostin, all of which were isolated fr... S Hideo,H Koji,M Hiroshi - 《Chemical & Pharmaceutical Bulletin》 被...
(Chemistry) a process that involves changes in the structure and energy content of atoms, molecules, or ions but not their nuclei. Comparenuclear reaction Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 200...
and few solid complex compounds have been isolated. The complexes are easily detected in solution and are referred to as charge-transfer complexes. Iodine, for example, is slightly soluble in water and gives a yellowish-brown solution. Brown solutions are also formed withalcohol,ether,ketones, and...
AN Ghanya,I Maznah,AS Al-Zubairi - 《International Journal of Pharmacology》 被引量: 57发表: 2009年 Essential and fatty oil of Agastache rugosa We have continued an investigation of wrinkled giant hyssop and have studied the physicochemical properties of the essential and fatty oils and also th...
To improve the properties of bio-oil, a new method was proposed that does not involve introduction of any energy medium. An ether-soluble fraction (ES), a dichloromethane soluble fraction (DCMS), and a dichloromethane insoluble fraction (DCMIS) of bio-oil were obtained using ether and dichloro...
The reaction between 1 equiv of the sterically encumbered lithium terphenyl Et2O·LiC6H3-2,6-Trip2 and PbBr2 in diethyl ether afforded the organolead(II) halide compound {Pb(μ-Br)C6H3-2,6-Trip2}2 (1) as orange crystals. Treatment of 1 w... L Pu,A Brendan Twamley,PP Power - 《...
AIM To study the chemical constituents of Caulophyllum robustum Maxim.METHODS Caulophyllum robustum Maxim was extracted by alcohol at reduced pressure,extract obtained was mixed with water and then extracted with petroether,ethylacetate,chloroform,n-butanol.Compounds 1-4 were isolated with silica ...
(4-hydroxyphenyl) acetic acid(Ⅸ),and(5-formylfuran-2-yl) ether(Ⅹ).Conclusion These ten compounds are isolated from roasted sinapis seeds for the first time.Compound Ⅰ is a new compound named as sinaldehyde.The isolation of Ⅲ,Ⅴ,Ⅷ—Ⅹ has been isolated from raw sinapis seeds for ...
NDBF exhibits excellent two-photon photochemical properties (two-photon cross-section ¼ 0.6 GM at 720 nm, half-time for diffraction-limited two-photon photolysis ¼ 0.3 ms) and has been successfully used to control Ca2 þ release from the sarcoplasmic recticulum of intact cardiac myocytes15...
The resulting thermal properties and structural regularities of copolyester can be modified by exchange reactions during preparation. KEY WORDS Liquid Crystalline Polymers / Poly(ethylene terephthalate) / Exchange Reaction / Molecular Weight / Ether / Crystallization / Melting Temperature Depression/ In the...