Wheeler-Johnson test

Wheel·er-John·son test

(wēl'ĕr jon'son),

a qualitative test for the pyrimidine bases cytosine and uracil, which produces a green coloration when the sample is treated with bromine water. The addition of barium hydroxide will turn the liquid purple.

Wheeler-Johnson test

An obsolete, qualitative test for urinary pyrimidines (cytosine and uracil).

Johnson,

Treat Baldwin, U.S. chemist, 1875-1947.

Wheeler-Johnson test - see under Wheeler, Henry Lord

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Wheeler,

Henry Lord, U.S. chemist, 1867-1914.

Wheeler-Johnson test - cystosine or uracil when treated with bromine yields dialuric acid which gives a green color with excess of barium hydroxide.