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Shop By Category Biochemical Reagents | Products For Classifying Bacteria

Proper identification of bacteria in your sample requires reagents and dyes capable of differentiation. GoldBio classifying reagents react differently depending on the metabolic properties of the cells present in your sample and can form colored precipitates in the presence of certain enzymes. Dyes like brilliant green will give you the ability to stain particular cells, such as E. coli from S. typhosa, allowing a visual indicator of which cells are present in your sample.
Displaying 1-14 of 14 results.
2-Naphthyl caprylate Octanoic acid (β-naphthyl ester)
Catalog ID
Size
Pricing
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2-Naphthyl caprylate Octanoic acid (β-naphthyl ester) product image
N-100-500
500 mg
$ 137.00
N-100-1
1 g
$ 205.00
N-100-2.5
2.5 g
$ 446.00
N-100-5
5 g
$ 776.00
Description

2-Naphthyl caprylate is a chromogenic substrate for carboxylesterase and lipase. 2-naphthol is released upon hydrolyzation. By simultaneous coupling with a diazonium salt, the corresponding azo-dye is formed.

Naphthols can also be detected by fluorescence analysis, and can be used in a colorimetric assay for the extracellular lipase of Pseudomonas fluorescent B52.

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Specifications
CAS Number 10251-17-9
Technical Resources
4-Methylumbelliferyl phosphate, free acid
Catalog ID
Size
Pricing
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4-Methylumbelliferyl phosphate, free acid product image
M-700-10
10 g
$ 201.00
M-700-25
25 g
$ 477.00
M-700-50
50 g
$ 906.00
M-700-100
100 g
$ 1717.00
Description

4-Methylumbelliferyl phosphate (MUP) is a sensitive fluorogenic substrate for fluorometric and UV-spectrophotometric assays of phosphatase.

Phosphotase activity has long been studied due to its importance in cellular function. Upon dephosphorylation, MUP yields fluorescent 4-methylumelliferone (4-MU). This reaction has been used to spot PCR amplified products in ELISA and to classify bacteria.

More specifically, MUP can act as an indicator of C. perfringens because of its ability to detect phosphatase which is a highly specific indicator of C. perfringens.

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Specifications
CAS Number 3368-04-5
Technical Resources
5-Bromo-4-chloro-3-indoxyl-2-acetamido-2-deoxy-β-D-galactopyranoside (X-β-D-GalNAc)
Catalog ID
Size
Pricing
More Info
5-Bromo-4-chloro-3-indoxyl-2-acetamido-2-deoxy-β-D-galactopyranoside (X-β-D-GalNAc) product image
B-260-250
250 mg
$ 91.00
B-260-500
500 mg
$ 137.00
B-260-1
1 g
$ 200.00
Description
Used as a chromogenic substrate for N-Acetyl-β-D-galactosaminidase, yielding a blue precipitate. It is also used to detect Candida albicans.Product Specification5-Bromo-4-chloro-3-indoxyl-2-acetamido-2-deoxy-β-D-galactopyranoside;5-Bromo-4-chloro-3-indoxyl-N-acetyl-β-D-galactosaminide X-β-D-GalNAcMOLECULAR BIOLOGY GRADEFormula: C16H18BrClN2O6MW: 449.68 g/molStorage/Handling: Store desiccated at -20°C. Protect from light. View product page →
Specifications
CAS Number 129572-48-1
Technical Resources
5-Bromo-4-chloro-3-indoxyl-α-D-glucopyranoside
Catalog ID
Size
Pricing
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5-Bromo-4-chloro-3-indoxyl-α-D-glucopyranoside product image
B-380-500
500 mg
$ 251.00
B-380-1
1 g
$ 401.00
B-380-2.5
2.5 g
$ 627.00
B-380-5
5 g
$ 835.00
Description
5-Bromo-4-chloro-3-indoxyl-α-D-glucopyranoside MOLECULAR BIOLOGY GRADE C14H15BrClNO6 MW: 408.64 g/mol X-α-D-Glucoside is a white to off-white microcrystalline powder that is used as a chromogenic substrate for α-D-glucosidase, which yields a blue precipitate. It is used for the detection of Staphylococcus aureus and species within Bacilli. It is also used in the isolation of Enterobacter sakazakii. Storage/Handling: Store at -20°C. Protect from light. View product page →
Specifications
CAS Number 108789-36-2
Technical Resources
5-ethynyl-2’-deoxyuridine (5-EdU)
Catalog ID
Size
Pricing
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5-ethynyl-2’-deoxyuridine (5-EdU) product image
E-980-100
100 mg
$ 59.00
E-980-250
250 mg
$ 99.00
E-980-500
500 mg
$ 150.00
E-980-1
1 g
$ 225.00
Description
Product Specifications5-ethynyl-2’-deoxyuridine (5-EdU)Formula: C11H12N2O5MW: 252.22 g/molStorage/Handling: Store at -20°C.PubChem Chemical ID: 472172 View product page →
Specifications
CAS Number 61135-33-9
Technical Resources
Basic Fuchsin
Catalog ID
Size
Pricing
More Info
Basic Fuchsin product image
F-060-25
25 g
$ 60.00
F-060-100
100 g
$ 150.00
Description
Basic fuchsin is a fluorescent dye composed of rosaniline, magenta II, pararosaniline and new fuschsine. Basic fuchsin staining is certified to use for the detection of acid-fast bacilli and is commonly used in the Ziehl Neelsen staining method. This dye has also been shown to stain tubercle Bacillus and to compare E. coli and Aerobacter aerogenes.Product Specifications Basic FuchsinMOLECULAR BIOLOGY GRADEFormula: C20H20ClN3MW: 337.85 g/mol Color: Dark green powder (will turn red in solution).Storage/Handling: Store in a dry and well-ventilated place.PubChem Chemical ID: 12447 View product page →
Specifications
CAS Number 632-99-5
Technical Resources
Brilliant Green
Catalog ID
Size
Pricing
More Info
Brilliant Green product image
B-080-100
100 g
$ 52.00
Description
Brilliant Green is a stain for differentiating E. coli from S. typhosa. It is also used in bacteriological media. Product Specifications Brilliant GreenCERTIFIABLE GRADEFormula; C27H34N2O4SMW: 482.63 g/molStorage/Handling: Store at room temperature.PubChem Chemical ID: 12449 View product page →
Specifications
CAS Number 633-03-4
Technical Resources
C-390
Catalog ID
Size
Pricing
More Info
C-390 product image
C-390-100
100 mg
$ 93.00
C-390-250
250 mg
$ 222.00
C-390-500
500 mg
$ 421.00
C-390-1
1 g
$ 801.00
Description
C-390 is an antibacterial agent which is used for selective isolation of Pseudomonas aeruginosa from other bacterial species. Product Specifications C-390 9-chloro-9-(4-diethylamino) phenyl-9,10-dihydro-10-phenylacridine hydrochloride 4-(9-chloro-9,10-dihydro-10-phenyl-9-acridinyl)-N,N-diethyl-benzeneamine MOLECULAR BIOLOGY GRADE C 29H27ClN2 · 1.4 HCl MW: 490.05 g/mol Storage/Handling: Store at room temperature and protect from light. PubChem ID:93461 View product page →
Specifications
CAS Number 77769-31-4
Technical Resources
Dulcitol
Catalog ID
Size
Pricing
More Info
Dulcitol product image
D-270-1
1 kg
$ 254.00
D-270-2.5
2.5 kg
$ 553.00
D-270-5
5 kg
$ 940.00
D-270-10
10 kg
$ 1658.00
Description

Dulcitol is a sugar alcohol used in culture media to differentiate bacteria based on carbohydrate fermentation abilities.

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Specifications
CAS Number 608-66-2
Technical Resources
Esculin
Catalog ID
Size
Pricing
More Info
Esculin product image
E-100-100
100 g
$ 393.00
E-100-250
250 g
$ 818.00
E-100-500
500 g
$ 1363.00
E-100-1000
1000 g
$ 2272.00
Description

Esculin is a coumarin glycoside exhibiting anti-oxidative properties. Additionally, it provides protection against carcinogenesis caused by chemicals. Esculin is used to detect and enumerate Enterococcus species.

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Specifications
CAS Number 531-75-9
Technical Resources
Indoxyl β-D-glucuronide cyclohexylammonium
Catalog ID
Size
Pricing
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Indoxyl β-D-glucuronide cyclohexylammonium product image
I-480-500
500 mg
$ 174.00
I-480-1
1 g
$ 247.00
I-480-2.5
2.5 g
$ 476.00
I-480-5
5 g
$ 731.00
Description
Indoxyl β-D-glucuronide cyclohexylammonium 3-Indoxyl-β-D-glucuronic acid cyclohexylammonium salt Y™-β-D-glucuronide CHX salt Y™-β-D-GlcA • CHX MOLECULAR BIOLOGY GRADE C14H15NO7·C6H13N MW: 408.46 g/mol White to off-white crystalline powder 3-Indoxyl-β-D-glucuronic acid is used in detection and enumeration of E. coli. This chromogenic substrate is used for β-D-glucuronidase, and yields a blue precipitate upon cleavage. Storage/Handling: Store desiccated at -20°C. Protect from light. PubChem CID: 4379663 View product page →
Specifications
CAS Number 35804-66-1
Technical Resources
L-Alanine 7-amido-4-methylcoumarin, trifluoroacetate salt
Catalog ID
Size
Pricing
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L-Alanine 7-amido-4-methylcoumarin, trifluoroacetate salt product image
A-190-500
500 mg
$ 75.00
A-190-1
1 g
$ 119.00
A-190-2.5
2.5 g
$ 239.00
Description

H-Ala-AMCTFA (L-Alanine 7-amido-4-methylcoumarin, trifluoroacetate salt) is a fluorogenic substrate for aminopeptidase that yields a blue fluorescent solution. This substrate is useful in differentiating between gram-positive and gram-negative bacteria.

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Specifications
CAS Number 96594-10-4
Technical Resources
L-Arabinose
Catalog ID
Size
Pricing
More Info
L-Arabinose product image
A-300-25
25 g
$ 17.00
A-300-100
100 g
$ 39.00
A-300-250
250 g
$ 86.00
A-300-500
500 g
$ 162.00
A-300-1
1 kg
$ 216.00
A-300-2
2 kg
$ 349.00
A-300-5
5 kg
$ 715.00
Description

L-Arabinose is an arabinose isomer widely found in nature, while D-arabinose is less common. L-Arabinose is a constituent of many biopolymers that make up plant cell walls.

This monosaccharide is often used in cell culture media, serving as a bacterial carbon source, and can be used to distinguish between bacteria based on their fermentation abilities.

L-Arabinose, in the absence of glucose, induces transcription of the ara operon in E. coli that encodes L-arabinose catabolizing enzymes. It does this by binding to the AraC protein and activating the PBAD promoter. The PBAD promoter is used in plasmid vectors as a switch for protein expression that can be turned on by L-arabinose or turned off by addition of glucose.

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Specifications
CAS Number 87-72-9
Technical Resources
L-Malic acid, disodium salt
Catalog ID
Size
Pricing
More Info
L-Malic acid, disodium salt product image
M-100-250
250 g
$ 209.00
M-100-500
500 g
$ 397.00
M-100-1
1 kg
$ 756.00
M-100-2.5
2.5 kg
$ 1800.00
Description

L-Malic acid, disodium salt is a dicarboxylic acid used to differentiate microorganisms based on their varying metabolic properties. It is a source of CO2 in the Calvin cycle and an intermediate of the citric acid cycle.

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Specifications
CAS Number 138-09-0
Technical Resources