Phosphorothioic acid,S-(1-meth

Biotinylation of a Propargylated Cyclic (3′‐5′) Diguanylic Acid and of Its Mono‐6‐Thioated Analog Under “Click” Conditions

?isobutyryl?5??O ?(4,4??dimethoxytrityl)?2??O ?(propargyl)guanosine is converted to its 3??O ?levulinyl ester in a yield of 91%. The reaction of commercial N 2 ?isobutyryl?5??O ?(4,4??dimethoxytrityl)?2??O ?tert ?butyldimethylsilyl?3??O ?[(2?cyanoethyl)?N ,N

Measurement of Intracellular Free Calcium Ion Concentration in Cell Populations Using Fura- 2

. The first to be used was quin-2: its structure was based on the novel calcium chelator 1,2-bis-(O-aminophenoxyl-ethane-N, N,N′,N′-tetraacetic acid (BAPTA) (7 , 8 ), a double aromatic analog of EGTA. The major problem of inducing a hydrophilic polycarboxylate anion

Determination of Sulfur Amino Acids, Glutathione, and Related Aminothiols in Biological Samples by Gas Chromatography with Flame Photometric Detection

. GC-MS methods based on the conversion into tert -butyldimethylsilyl (33 ) and N(O,S)-propoxycarbonyl propyl ester (34 ) derivatives, and LC-MS method were highly sensitive and specific, but these methods require expensive equipment. Furthermore, CZE