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  • 60983 - Kovac’s reagent for indoles

60983 Millipore

Kovac’s reagent for indoles

for microbiology

Synonym: 4-(Dimethylamino)benzaldehyde solution, Indole reagent according to Kovac

  • CAS Number 100-10-7

  • Empirical Formula (Hill Notation) C9H11NO

  • Molecular Weight 149.19

  •  Beilstein/REAXYS Number 4132845

  •  MDL number MFCD00003381

  •  PubChem Substance ID 329759335

  •  NACRES NA.85



Related Categories Aldehydes, Biochemical Reagents for Identification, Building Blocks, C9, Carbonyl Compounds,
Quality Level   100
grade   for microbiology
shelf life   limited shelf life, expiry date on the label
composition   n-butanol
  hydrochloric acid
application(s)   microbiology: suitable (microbial identification)
refractive index   n20/D 1.417
Featured Industry   Agriculture
Clinical Testing
Food and Beverages
storage temp.   2-8°C
suitability   Escherichia coli
SMILES string   [H]C(=O)c1ccc(cc1)N(C)C
InChI   1S/C9H11NO/c1-10(2)9-5-3-8(7-11)4-6-9/h3-7H,1-2H3


General description

Solution of 4-(dimethylamino)benzaldehyde and hydrochloric acid in n-butanol.


In the presence of oxygen, some bacteria, like E. coli, are able to split tryptophan into indole and α-aminopropionic acid. This reagent is for detecting the indole and identifying the indole-positive and indole-negative microorganisms.

Safety & Documentation

Safety Information

Signal word 
Precautionary statements 
UN 2920 3(8) / PGII
WGK Germany 

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