PER-O-ACETYL-α-THIOETHYL-N-ACE

Quantitation of Cocaine, Benzoylecgonine, Ecgonine Methyl Ester, and Cocaethylene in Urine and Blood Using Gas Chromatography-Mass Spectrometry (GC-MS

, benzoylecgonine-d3, ecgonine methyl ester-d3, and cocaethylene-d3 and buffered with phosphate buffer. The drugs in the sample are extracted by cation-exchange solid phase extraction. The drugs from the solid phase cartridge are eluted and the eluent is dried

Enzymes Acting on d-Amino Acid Containing Peptides

aminopeptidase and endopeptidase activities. The enzyme was active toward (d -Phe) n , Boc-(d -Phe) n , (d -Phe) n methyl ester, d -Phe-NH2 , Boc-(d -Phe) n methyl ester, and Boc-(d -Phe) n tert -butyl ester, but not toward (d -Ala) n (n = 2–4), (d

Characterization of Histaminergic Receptors

in Tissue Membrane Homogenates Basic Protocol 3: Measurement of [3H]N‐α‐Methyl Histamine Binding to Cloned Human H3 Receptors in Membranes Alternate Protocol 3: Measurement of [3H]N‐α‐Methyl Histamine Binding to Native H3 Receptors Basic Protocol