105-21-5, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.105-21-5, Name is Gamma-heptalactone, molecular formula is C7H12O2. In a article£¬once mentioned of 105-21-5
Capillary gas chromatographic properties of three new mono-ester permethylated beta-cyclodextrin derivatives
2I-O-Methoxycarbonylmethyl-2II-VII,3 I-VII,6I-VII-eicosa-O-methyl-cyclodextrin (20Me/P2OCH 2COOMe), 6I-O-methoxycarbonylmethyl-2I-VII, 3I-VII,6II-VII-eicosa-O-methyl-cyclodextrin (20Me/P6OCH2COOMe), 6I-O-methoxycarbonyl-6 I-deoxy-2I-VII,3I-VII,6II-VII- eicosa-O-methyl-cyclodextrin (20Me/P6COOMe) have been evaluated as chiral stationary phases (CSPs) for capillary gas chromatography. General chromatographic properties of the corresponding columns have been investigated in terms of efficiency, polarity and inertness. More than 60 solutes have been used for studying their enantioselectivity by comparison with permethylated beta-cyclodextrin as a reference. Similar enantioseparation ability was established for the four studied CSPs, the 20Me/P2OCH2COOMe exhibiting in most cases a better enantioselectivity than the other selectors.
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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem