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The molecular species of sphingoid bases were tagged with the fluorescent amino group reagent, 4-fluoro-7-nitrobenzofurazan (NBD-F). The NBD-sphingoid bases were analyzed by a highly selective and sensitive liquid chromatography–electrospray ionization tandem mass spectrometry (LC–ESI–MS/MS) technique capable of reliable detection of several fmol of the(More)
We present a new global shutter CMOS imager with 2 transistors per pixel. The first transistor is a ring gate transistor for accumulating holes that modulate threshold voltage. The second one is a transfer gate transistor that transfers holes from a PD to the ring gate transistor at the same time in all pixels. Simple structure allows us to realize 5.4 um(More)
Ethyl 2,3,4,6-tetra-O-acetyl-1-thio-alpha-D-glucopyranoside has been prepared in a good yield by anomerization of the corresponding beta-thioglucoside with tin(IV) chloride and transformed, in three steps, into ethyl 2-O-benzoyl-4,6-O-benzylidene-1-thio-alpha-D-glucopyranoside (18). Chloroacetylation of 18, followed by treatment of the product with chlorine(More)
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