In the crystal structure of the title compound, C(4)H(12)N(+)·BH(4) (-), the tetra-methyl-ammonium cations are situated on special positions with site symmetry [Formula: see text]m2. The borohydride anions are situated on special positions with 4mm site symmetry and show rotational disorder around the fourfold axis.

Soybean trypsin inhibitor could be partially reduced by treatment with 0.25 M sodium borohydride at 0” without loss of inhibitory activity toward trypsin. From the number of --SH groups released and the carboxymethylcysteine content of the carboxymethylated derivative, it was evident that two -SH groups had been produced under these conditions. A comparison of the diagonal electrophoretic maps ...

Materials. Ethylbromoacetate (97%), potassium carbonate (99%), diethyl ether (99.8%), ethylenediamine (99%), dichloromethane (99.6%), sodium triacetoxyborohydride (97%), sodium borohydride (98%), propionaldehyde (97%), poly(ethylene glycol) methyl ether thiol (PEG-SH, average mw 2000), formic acid (96%), formaldehyde (37% wt in H2O), sodium hydroxide(97%), propionaldehyde (97%), trifluoroacetic...

The specificity of a GC/MS assay of morphine and codeine was examined with particular regard to the potential interference due to hydromorphone and hydrocodone, compounds that cross-react extensively in opiate screening tests. A GC/MS method with solid-phase extraction and acetylation or trimethylsilylation was used. The equilibrium between keto and enol forms of the potential interferents was ...

In this study we evaluated two different""To-labeling techniques to produce "To-low density lipoprotein (Tc-LDL) suitable for the scintigraphic delineation of experimental atherosclerotic lesions. The two methods are 1) a procedure that uses stamnous chloride and sodium borohydride (borohydride method) and 2) a procedure that uses sodium dithiionite as a reducing agent and that has been success...

The ring opening of some phthalimide derivatives with sodium borohydride in methanol/water (6:1) afforded the corresponding 2-hydroxymethylbenzamides irrespective of the substituents. The most active members of the series evaluated for anti-inflammatory and analgesic activities were 2-hydroxymethyl-N-[4-(2-methoxyphenyl)-piperazin-1-yl]-ethylbenzamide (3d) and 2-hydroxymethyl-N-[4-(2-methoxyphe...