Sidney Udenfriend

Fluorescamine: A Reagent for Assay of Amino Acids, Peptides, Proteins, and Primary Amines in the Picomole Range

Sidney Udenfriend, Stanley J. Stein, Peter Böhlen et al. · Science · 1972 · 2.7K citations

Natural Sciences, Biochemistry, Biosensors +12

Tyrosine Hydroxylase

Toshiharu Nagatsu, Morton Levitt, Sidney Udenfriend · Journal of Biological Chemistry · 1964 · 2.1K citations · Full text

Fluorometric assay of proteins in the nanogram range

Peter Böhlen, Stanley J. Stein, Wallace Dairman et al. · Archives of Biochemistry and Biophysics · 1973 · 1.6K citations

Life Sciences, Biochemistry, Molecular Biology +8

A specific method for the analysis of hydroxyproline in tissues and urine

Darwin J. Prockop, Sidney Udenfriend · Analytical Biochemistry · 1960 · 1.1K citations

Life Sciences, Biochemistry, Clinical Biochemistry +3

ELUCIDATION OF THE RATE-LIMITING STEP IN NOREPINEPHRINE BIOSYNTHESIS IN THE PERFUSED GUINEA-PIG HEART

Morton Levitt, Sydney Spector, Albert Sjoerdsma et al. · Journal of Pharmacology and Experimental Therapeutics · 1965 · 1K citations

Life Sciences, Biochemistry, Physiology +15