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  2. Indole-3-carbaldehyde - Wikipedia

    en.wikipedia.org/wiki/Indole-3-carbaldehyde

    Indole-3-carbaldehyde (I3A), also known as indole-3-aldehyde and 3-formylindole, is a metabolite of dietary L-tryptophan which is synthesized by human gastrointestinal bacteria, particularly species of the Lactobacillus genus.

  3. Indole test - Wikipedia

    en.wikipedia.org/wiki/Indole_test

    Indole test positive: appearance of pink layer at top (e.g. Escherichia coli) Like many biochemical tests on bacteria, results of an indole test are indicated by a change in color following a reaction with an added reagent. Pure bacterial culture must be grown in sterile tryptophan or peptone broth for 24–48 hours before performing the test.

  4. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

  5. Marquis reagent - Wikipedia

    en.wikipedia.org/wiki/Marquis_reagent

    The above photo shows the positive results of the number 2 Marquis reagent presumptive drug test when used with a sample of opium. It is the primary presumptive test used in Ecstasy reagent testing kits. It can also be used to test for such substances as opiates (e.g. codeine, heroin), and phenethylamines (e.g. 2C-B, mescaline).

  6. Ehrlich's reagent - Wikipedia

    en.wikipedia.org/wiki/Ehrlich's_reagent

    It gives a negative test-result for 25I-NBOMe and many other non-indole-related psychoactives. The reagent will also give a positive result for opium, because of the presence of tryptophan in natural opium. [3] Pyridoxine, present in vitamin supplements, can give positive results to the Ehrlich test, showing a pink colour change. [4]

  7. Indole - Wikipedia

    en.wikipedia.org/wiki/Indole

    At very low concentrations, however, it has a flowery smell, [3] and is a constituent of many perfumes. It also occurs in coal tar. It has been identified in cannabis. [4] It is the main volatile compound in stinky tofu. [5] When indole is a substituent on a larger molecule, it is called an indolyl group by systematic nomenclature.

  8. ‘Elevated Levels’ of Heavy Metals Found in Popular Protein ...

    www.aol.com/scientists-just-found-lead-cadmium...

    A new Clean Label Project report suggests some protein powders contain heavy metals lead and cadmium. See which ones are safe here, plus what an expert advises.

  9. 6-Formylindolo (3,2-b)carbazole - Wikipedia

    en.wikipedia.org/wiki/6-Formylindolo(3,2-b)carbazole

    In addition to the light- or H 2 O 2-induced formation of FICZ, a number of other enzymatic pathways have been identified to convert Trp to FICZ via the precursor I3A. [2] [3] Oxidative deamination of Trp by aromatic amino acid aminotransferases (ArAT) or L-amino oxidases (LAAO), one of which is the IL4-inducible enzyme IL4I1, converts Trp to indole-3-pyruvate, which after decarboxylation ...