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Merck

67309

Millipore

Kovac′s reagent for indoles

suitable for microbiology

Sinónimos:

4-(Dimethylamino)benzaldehyde solution

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About This Item

Fórmula empírica (notación de Hill):
C9H11NO
Número de CAS:
Peso molecular:
149.19
Beilstein:
4132845
Número MDL:
Código UNSPSC:
41171621
ID de la sustancia en PubChem:
NACRES:
NA.85

Agency

according to ISO 16654:2001

Nivel de calidad

Línea del producto

BioChemika

caducidad

limited shelf life, expiry date on the label

composición

4-(dimethlyamino)benzaldehyde, 50 g/L
hydrochloric acid, 240 g/L
isoamylic alcohol, 710 g/L

técnicas

microbe id | specific enzyme detection: suitable

aplicaciones

agriculture
clinical testing
environmental
food and beverages

microbiology

temp. de almacenamiento

2-8°C

idoneidad

Escherichia coli
coliforms

cadena SMILES

[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

Clave InChI

BGNGWHSBYQYVRX-UHFFFAOYSA-N

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Descripción general

Kovac′s reagent is prepared by mixing p-dimethylaminobenzaldehyde, isoamyl alcohol and concentrated hydrochloric acid. For identification of an organism, the formation of Indole from a tryptophan substrate is a useful diagnostic tool. Indole production is a crucial test in identification of Escherichia coli. After incubation, adding the reagent will help in determination if Indole that has been produced. The reagent turns red when reacts with Indole.

Aplicación

In the presence of oxygen, some bacteria, like E.coli, are able to split tryptophan into indole and alpha-aminopropionic acid. This reagent is for detecting the indole and identify the indole-positive and indole-negative microorganisms.
Kovac′s reagent may be used for spot test for determination of indole by saturating filter paper with the reagent. It may also be used for initial spot test for determination of indole followed by quantification by spectrophotometric assay and HPLC-UV/Vis-MS/MS methods.

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Referencia del producto
Descripción
Precios

Palabra de señalización

Danger

Clasificaciones de peligro

Acute Tox. 4 Inhalation - Eye Dam. 1 - Flam. Liq. 3 - Met. Corr. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3

Órganos de actuación

Respiratory system

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

109.4 °F

Punto de inflamabilidad (°C)

43 °C

Equipo de protección personal

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Visite la Librería de documentos

Rita R. Colwell, R. Grigorova
Methods in Microbiology, 19, 27-27 (1987)
S. Harisha
An Introduction to Practical Biotechnology, 193-193 (2005)
Patrick R Porubsky et al.
Archives of biochemistry and biophysics, 475(1), 14-17 (2008-04-22)
Cytochrome P450 2A13 (CYP2A13) is a lung specific enzyme known to activate the potent tobacco procarcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) into two carcinogenic metabolites. CYP2A13 has been crystallized and X-ray diffraction experiments illuminated the structure of this enzyme, but with an unknown
R W Trepeta et al.
Journal of clinical microbiology, 19(2), 172-174 (1984-02-01)
Escherichia coli is the most common gram-negative microbe isolated and identified in clinical microbiology laboratories. It can be identified within 1 h by oxidase, indole, lactose, and beta-glucuronidase tests. The oxidase and indole tests are performed as spot tests, and
Jun-Min Guo et al.
Journal of agricultural and food chemistry, 58(11), 6556-6561 (2010-05-15)
A simple colorimetric method for the differentiation of indoleacetic acid (IAA) and indolebutyric acid (IBA) in plant samples is described. The color change is based upon the reaction between the auxins and p-(dimethylamino)benzaldehyde (PDAB, Ehrlich reagent) following the electrophilic substitution

Artículos

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.

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