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Ukrain (NSC 631570) autofluorescence in UV light [4] (1)
nIn ultraviolet light Ukrain fluoresces in the yellowish green range of spectrum. Excitation frequencies are within a range of 220 to 490 nm. The spectral width of the fluorescence extends from 410 to 665 nm [4]*.
n Crystallized Ukrain
*This is the number of  the scientific article. See Bibliography.
Thin-layer chromatography plate with drops of Ukrain under UV light. On the left, Ukrain in a concentration of 10 mg/ml in distilled water. Then, serial dilutions by a factor of 10 each time (1 mg/ml; 0.1 mg/ml,…).