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  2. Nylander's test - Wikipedia

    en.wikipedia.org/wiki/Nylander's_test

    Nylander's test is a chemical test used for detecting the presence of reducing sugars. Glucose or fructose reduces bismuth oxynitrate to bismuth under alkaline conditions. When Nylander's reagent, which consists of bismuth nitrate, potassium sodium tartrate and potassium hydroxide, is added to a solution with reducing sugars, a black precipitate of metallic bismuth is formed.

  3. Chemical test - Wikipedia

    en.wikipedia.org/wiki/Chemical_test

    Benedict's reagent tests for reducing sugars or aldehydes; Fehling's solution tests for reducing sugars or aldehydes, similar to Benedict's reagent; Molisch's test tests for carbohydrates; Nylander's test tests for reducing sugars; Rapid furfural test distinguishes between glucose and fructose

  4. Methyl cyanoformate - Wikipedia

    en.wikipedia.org/wiki/Methyl_cyanoformate

    When a lithium enolate is generated in diethyl ether or methyl t-butyl ether, treatment with Mander's reagent will selectively afford the C-acylation product. [1] Thus, for enolate acylation reactions in which C- vs. O-selectivity is a concern, methyl cyanoformate is often used in place of more common acylation reagent like methyl chloroformate .

  5. Spot test (lichen) - Wikipedia

    en.wikipedia.org/wiki/Spot_test_(lichen)

    A spot test in lichenology is a spot analysis used to help identify lichens.It is performed by placing a drop of a chemical reagent on different parts of the lichen and noting the colour change (or lack thereof) associated with application of the chemical.

  6. Fehling's solution - Wikipedia

    en.wikipedia.org/wiki/Fehling's_solution

    In organic chemistry, Fehling's solution is a chemical reagent used to differentiate between water-soluble carbohydrate and ketone (>C=O) functional groups, and as a test for reducing sugars and non-reducing sugars, supplementary to the Tollens' reagent test. The test was developed by German chemist Hermann von Fehling in 1849. [1]

  7. Chemical tests in mushroom identification - Wikipedia

    en.wikipedia.org/wiki/Chemical_tests_in_mushroom...

    Frank (1988) developed an alternative formulation in which aniline oil is combined with glacial acetic acid (GAA, essentially distilled vinegar) in a 50:50 solution. GAA is a much safer, less reactive acid. This single combined reagent is relatively stable over time. A single spot or line applied to the pileus (or other surface).

  8. Dragendorff's reagent - Wikipedia

    en.wikipedia.org/wiki/Dragendorff's_reagent

    Dragendorff's reagent is a color reagent to detect alkaloids in a test sample or as a stain for chromatography plates. Alkaloids , if present in the solution of sample, will react with Dragendorff's reagent and produce an orange or orange-red precipitate . [ 1 ]

  9. Griess test - Wikipedia

    en.wikipedia.org/wiki/Griess_test

    The Griess diazotization reaction, on which the Griess reagent relies, was first described in 1858 by Peter Griess. [1] [2] The test has also been widely used for the detection of nitrates (N-oxidation state = 5+), which are a common component of explosives, as they can be reduced to nitrites (N-oxidation state = 3+) and detected with the ...