A simple and sensitive HPLC/Q-TOF MS method for simultaneous determination of 1,3-diaminopropane, putrescine, cadaverine, spermidine, spermine and acetyl-spermine in human urine was developed in electrospray-ionization source by positive ion mode. The samples were firstly pretreated by 10% HClO(4) and then
Journal of agricultural and food chemistry, 59(3), 829-838 (2011-01-18)
A novel and reproducible method is described for accurately determining the molecular weight distribution by size exclusion chromatography (SEC) of whole lignocellulosic materials. This approach offers the opportunity to compare the molecular weight distributions of intact milled woods and its
In vivo neurochemical monitoring using microdialysis sampling is important in neuroscience because it allows correlation of neurotransmission with behavior, disease state, and drug concentrations in the intact brain. A significant limitation of current practice is that different assays are utilized
The Journal of organic chemistry, 70(5), 1647-1653 (2005-02-26)
Product selectivities [S = ([ester product]/[acid product]) x ([water]/[alcohol solvent])] are reported for solvolyses of p-methoxybenzoyl chloride (2) in aqueous methanol, ethanol, 2,2,2-trifluoroethanol, n-propyl alcohol, isopropyl alcohol, and tert-butyl alcohol at 25, 35, and 45 degrees C. S values are
Iterative dianion relay along the ring: formation of gem-bis(trimethylsilyl) cyclopentenones from 2,5-bis(trimethylsilyl) oxy-cyclopentadienyl dianions and acid chlorides.
Heng Li et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(27), 7399-7403 (2011-05-28)
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