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Our most popular products from our most popular categories, from our Proven and PublishedTM Luciferin to our popular antibiotic lines and electrophoresis tools. GoldBio’s commitment to quality and affordability makes these products our top sellers.
Displaying 1-20 of 25 results.
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1 kb DNA Ladder
Catalog ID
Size
Pricing
More Info
1 kb DNA Ladder product image
D010-500
1x500 μl
$ 44.00
D010-1000
2x500 μl
$ 82.00
D010-1500
3x500 μl
$ 115.00
D010-2000
4x500 μl
$ 152.00
D010-2500
5x500 μl
$ 174.00
D010-3000
6x500 μl
$ 190.00
Description

A unique combination of a number of proprietary plasmids digested with appropriate restriction enzymes and PCR products to yield 13 fragments, suitable for use as molecular weight standards for agarose gel electrophoresis. The DNA includes fragments ranging from 250-10,000 base pairs. The 1K and 3K bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 μg a load) for approximating the mass of DNA in comparably intense samples. The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
100 bp DNA Ladder
Catalog ID
Size
Pricing
More Info
100 bp DNA Ladder product image
D001-500
1x500 μl
$ 44.00
D001-1000
2x500 μl
$ 82.00
D001-1500
3x500 μl
$ 115.00
D001-2000
4x500 μl
$ 152.00
D001-2500
5x500 μl
$ 174.00
D001-3000
6x500 μl
$ 190.00
Description

A unique combination of PCR products and a number of proprietary plasmids digested with appropriate restriction enzymes to yield 11 fragments, suitable for use as molecular weight standards for agarose gel electrophoresis. The DNA includes fragments ranging from 100-1,500 base pairs. The 500 and 1,500 base pair bands have increased intensity to serve as reference points. The approximate mass of DNA in each band is provided (0.5 μg a load) for approximating the mass of DNA in comparably intense samples of similar size. The ladder is ready-to-use, and is premixed with loading buffer dye for direct loading on gel.

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Specifications
CAS Number
Technical Resources
Agarose LE (Molecular Biology Grade)
Catalog ID
Size
Pricing
More Info
Agarose LE (Molecular Biology Grade) product image
A-201-100
100 g
$ 86.00
A-201-500
500 g
$ 318.00
A-201-1000
1 kg
$ 530.00
Description

Agarose LE (Low Electroendosmosis) is Molecular Biology Grade and used for the superior separation of nucleic acids and for the maximum crisp resolution of bands.

GoldBio Agarose LE is refined in an advanced process that excludes the use of organic solvents. The result is a cleaner end-product with significantly reduced environmental impact. The agarose can be used for analyses of nucleic acids from 50 bp to 25 kbp, protein electrophoresis and various blotting protocols.

The low EEO of the agarose promotes increased electrophoretic mobility, yielding improved resolution and shorter run times. This also allows macromolecules and larger particles (subcellular fragments, viruses, etc.) to migrate more freely through the gel matrix. The consistently low EEO reduces band distortion (caused by counterflow) that can result from the presence of excessive sulfate-rich negative ions.

Agarose is a natural product that forms an inert matrix used in electrophoresis, chromatography and other molecular biology and biochemistry techniques. Likewise, it is neutral and easily derivatizable, so it is easy to bind to its structure proteins like enzymes, antigens or antibodies. Toxicity absence makes working with agarose very convenient.

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Specifications
CAS Number 9012-36-6
Technical Resources
Ampicillin (Sodium), USP Grade
Catalog ID
Size
Pricing
More Info
Ampicillin (Sodium), USP Grade product image
A-301-5
5 g
$ 21.00
A-301-10
10 g
$ 32.00
A-301-25
25 g
$ 43.00
A-301-100
100 g
$ 162.00
A-301-500
500 g
$ 775.00
Description

Ampicillin sodium is a member of the extended-spectrum β-lactam family and similar in structure to penicillin. It is used in the selection of antibiotic cell hybrids and has a high rate of action against many gram-negative bacterial strains. Ampicillin sodium targets non-ESBL (Extended Spectrum β-lactamase) bacteria including Staphylococcus and Streptococcus species and medically important enteric pathogens such as Shigella and Salmonella. It has been found to be effective against certain β-lactam sensitive VRE or vancomycin resistant Enterococcus species. Resistance to ampicillin is routinely utilized as a selectable marker to confirm successful cell transformation. Ampicillin Sodium is freely soluble in water.

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Specifications
CAS Number 69-52-3
Technical Resources
BLUEstain™ 2 Protein ladder, 5-245 kDa
Catalog ID
Size
Pricing
More Info
BLUEstain™ 2 Protein ladder, 5-245 kDa product image
P008-500
1x500 μl
$ 109.00
P008-1000
2x500 μl
$ 212.00
P008-1500
3x500 μl
$ 303.00
P008-2000
4x500 μl
$ 394.00
P008-2500
5x500 μl
$ 478.00
P008-3000
6x500 μl
$ 558.00
Description

The BLUEstain™ 2 Protein ladder is a three-color protein standard with 13 prestained proteins, covering a wide range molecular weights from 3.5 to 245 kDa. Proteins are covalently coupled with a blue chromophore except for two reference bands (one green and one red band at 25 kDa and 75 kDa respectively) when separated on SDS-PAGE (Tris-glycine buffer). 


The BLUEstain™ 2 Protein ladder is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins. The ladder is supplied in gel loading buffer and is ready to use. Do not heat, dilute or add reducing agent before loading.

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Specifications
CAS Number
Technical Resources
BLUEstain™ Protein ladder, 11-245 kDa
Catalog ID
Size
Pricing
More Info
BLUEstain™ Protein ladder, 11-245 kDa product image
P007-500
1x500 μl
$ 109.00
P007-1000
2x500 μl
$ 212.00
P007-1500
3x500 μl
$ 303.00
P007-2000
4x500 μl
$ 394.00
P007-2500
5x500 μl
$ 478.00
P007-3000
6x500 μl
$ 558.00
Description

The BLUEstain™ Protein ladder is a three-color protein standard with 12 prestained proteins covering a wide range molecular weights from 10 to 245 kDa. Proteins are covalently coupled with a bluechromophore except for two reference bands (one green and one red band at 25 kDa and 75 kDa respectively) when separated on SDS-PAGE (Tris-glycine buffer). The BLUEstain™ Protein ladder, is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins. The ladder is supplied in gel loading buffer and is ready to use.

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Specifications
CAS Number
Technical Resources
Bovine Serum Albumin (BSA), Fraction V, Fatty Acid Free for tissue culture
Catalog ID
Size
Pricing
More Info
Bovine Serum Albumin (BSA), Fraction V, Fatty Acid Free for tissue culture product image
A-421-10
10 g
$ 26.00
A-421-25
25 g
$ 50.00
A-421-50
50 g
$ 80.00
A-421-100
100 g
$ 125.00
A-421-250
250 g
$ 228.00
A-421-500
500 g
$ 405.00
A-421-1
1 kg
$ 640.00
Description

GoldBio BSA is a highly purified, lyophilized albumin, suitable for Westerns, enzyme systems, protein standards, hybridizations and as a protease-sensitive immunoassays.  Reagent Grade, Fatty Acid Free BSA is ideally suited for fatty acid sensitive cell culture systems as well as for the most sensitive diagnostic and research applications.Our BSA is protease and certified TSE free, manufactured in the United States in a closed loop system from USDA-inspected, healthy animals located in the US.

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Specifications
CAS Number 9048-46-8
Technical Resources
Carbenicillin (Disodium)
Catalog ID
Size
Pricing
More Info
Carbenicillin (Disodium) product image
C-103-5
5 g
$ 43.00
C-103-25
25 g
$ 141.00
C-103-50
50 g
$ 249.00
C-103-100
100 g
$ 424.00
C-103-250
250 g
$ 859.00
Description

Carbenicillin is a member of the penicillin β-lactam antibiotics. However, unlike most β-lactams, carbenicillin disodium is limited to primarily gram-negative bacteria including Pseudomonas aeruginosa and common enteric species. It can be used in selection protocols and is often preferred over ampicillin due to its increased stability. This allows for less contamination of unwanted bacterial colonies. In addition, carbenicillin has been used to regulate bacterial growth in plants, yielding low regeneration frequencies. It can be used in genetic transformation applications to select for AmpR transformed cells.

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Specifications
CAS Number 4800-94-6
Technical Resources
Chloramphenicol, USP Grade
Catalog ID
Size
Pricing
More Info
Chloramphenicol, USP Grade product image
C-105-5
5 g
$ 11.00
C-105-25
25 g
$ 21.00
C-105-100
100 g
$ 74.00
Description

Chloramphenicol, also known as chlornitromycin, is a broad-spectrum, bacteriostatic antibiotic derived from Streptomyces venezuelae. It is effective against several gram-positive and gram-negative bacteria and commonly used in researching protein synthesis and to select for chloramphenicol-resistant transformed cells or the bacterial CAT gene.

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Specifications
CAS Number 56-75-7
Technical Resources
D-Luciferin, Potassium Salt (Proven and Published™)
Catalog ID
Size
Pricing
More Info
D-Luciferin, Potassium Salt (Proven and Published™) product image
LUCK-100
100 mg
$ 52.00
LUCK-250
250 mg
$ 125.00
LUCK-300
300 mg
$ 146.00
LUCK-500
500 mg
$ 188.00
LUCK-1G
1 g
$ 245.00
LUCK-2G
2 x 1 g
$ 472.00
LUCK-3G
3 x 1 g
$ 702.00
LUCK-4G
4 x 1 g
$ 928.00
LUCK-5G
5 x 1 g
$ 1150.00
LUCK-10G
10 x 1 g
$ 2280.00
Description

Luciferin is a common bioluminescent reporter used for in vivo imaging of the expression of luciferase. This water soluble substrate for the firefly luciferase enzyme utilizes ATP and Mg2+ as cofactors to emit a characteristic yellow-green emission in the presence of oxygen, which shifts to red light in vivo at 37°C. Through the utilization of ATP, the reaction can be further used to indicate the presence of energy or life in order to function as a life-death stain.

Luciferin is a common reagent used throughout the biotechnology field and specifically for in vivo imaging. Luciferase labeled tumor cells, stem cells or infectious diseases are often inoculated into research animals such as rats or mice for investigation. The injection of luciferin allows for the real-time, noninvasive monitoring of disease progression and/or drug efficacy in these model systems through Bioluminescence Imaging (BLI).

Luciferin is also commonly used for in vitro research, including luciferase and ATP assays, gene reporter assays, high throughput sequencing and various contamination assays.

Firefly Luciferin is identical to Beetle Luciferin. (See "Additional Information" for structures.)

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Specifications
CAS Number 115144-35-9
Technical Resources
D-Luciferin, Sodium Salt (Proven and Published™)
Catalog ID
Size
Pricing
More Info
D-Luciferin, Sodium Salt (Proven and Published™) product image
LUCNA-100
100 mg
$ 52.00
LUCNA-250
250 mg
$ 125.00
LUCNA-300
300 mg
$ 146.00
LUCNA-500
500 mg
$ 188.00
LUCNA-1G
1 g
$ 245.00
LUCNA-2G
2 x 1 g
$ 472.00
LUCNA-3G
3 x 1 g
$ 702.00
LUCNA-4G
4 x 1 g
$ 928.00
LUCNA-5G
5 x 1 g
$ 1150.00
LUCNA-10G
10 x 1 g
$ 2280.00
Description

Tested and Certified for in vivo imaging (See "Luciferin FAQ" in additional information)

Luciferin is a common bioluminescent reporter used for in vivo imaging of the expression of luciferase. This water soluble substrate for the firefly luciferase enzyme utilizes ATP and Mg2+ as cofactors to emit a characteristic yellow-green emission in the presence of oxygen, which shifts to red light in vivo at 37°C. Through the utilization of ATP, the reaction can be further used to indicate the presence of energy or life in order to function as a life-death stain.

Luciferin is a common reagent used throughout the biotechnology field and specifically for in vivo imaging. Luciferase labeled tumor cells, stem cells or infectious diseases are often inoculated into research animals such as rats or mice for investigation. The injection of luciferin allows for the real-time, noninvasive monitoring of disease progression and/or drug efficacy in these model systems through Bioluminescence Imaging (BLI).

Luciferin is also commonly used for in vitro research, including luciferase and ATP assays, gene reporter assays, high throughput sequencing and various contamination assays.

Firefly Luciferin is identical to Beetle Luciferin. (See "Additional Information" for structures.)

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Specifications
CAS Number 103404-75-7
Technical Resources
DTT (Dithiothreitol) (> 99% pure) Protease free
Catalog ID
Size
Pricing
More Info
DTT (Dithiothreitol) (> 99% pure) Protease free product image
DTT10
10 g
$ 43.00
DTT25
25 g
$ 97.00
DTT50
50 g
$ 173.00
DTT100
100 g
$ 276.00
DTT500
500 g
$ 1236.00
Description

Dithiothreitol (DTT) is the common name of the more popular of the two Cleland’s Reagents (the other being Dithioerythritol or DTE). DTT is a powerful reducing agent that forms a stable six-membered ring with an internal disulfide bond which is resistant to oxidation. DTT is often used for the following: reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl) cystamine to break apart the matrix of a polyacrylamide gel, the reduction of disulfide bonds in proteins, the prevention of those bonds from forming between cysteine residues and lastly, DTT is often used to reduce thiolated DNA in order to minimize dimerization.

DTT is a nearly 7-fold stronger reduction agent than βME (β-mercaptoethanol) and has a less offensive odor and is less toxic.

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Specifications
CAS Number 27565-41-9 / 3483-12-3
Technical Resources
G-418 Sulfate
Catalog ID
Size
Pricing
More Info
G-418 Sulfate product image
G-418-1
1 g
$ 28.00
G-418-5
5 g
$ 129.00
G-418-10
10 g
$ 216.00
G-418-25
25 g
$ 318.00
Description

G-418 sulfate, also known as geneticin, is an aminoglycoside antibiotic similar in structure to gentamicin B1. It is commonly used in plant and mammalian cell culture as a selectable marker. It can be used to select for cells transformed with an iNOS promoter construct or neomycin resistance gene.

G-418 functions by causing a chain of nonsense mutations during translation, ultimately resulting in inhibition of polypeptide synthesis and protein elongation. Resistance to G-418 is conferred through the nptll gene in plant cells and the neo gene in mammalian cells, which encode aminoglycoside 3'-phosphotransferase. For gene selection applications, a kill curve can be made to determine the minimum effective G418 concentration to kill non-resistant cells. G418 disulfate is freely soluble in water.

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Specifications
CAS Number 108321-42-2
Technical Resources
HEPES, Free Acid
Catalog ID
Size
Pricing
More Info
HEPES, Free Acid product image
H-400-100
100 g
$ 32.00
H-400-250
250 g
$ 64.00
H-400-500
500 g
$ 97.00
H-400-1
1 kg
$ 151.00
H-400-2
2 kg
$ 252.00
H-400-5
5 kg
$ 535.00
Description

HEPES is a buffering agent used in biochemistry and molecular biology that was selected and described by Good et al. It is a zwitterionic, piperazinic buffer that is useful for a pH range of 6.8 – 8.2. HEPES lacks the ability to form a significant complex with most metal ions and is recommended for use as a non-coordinating buffer in solutions with metal ions.

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Specifications
CAS Number 7365-45-9
Technical Resources
Hygromycin B
Catalog ID
Size
Pricing
More Info
Hygromycin B product image
H-270-1
1 g
$ 64.00
H-270-2-1
2 x 1 g
$ 119.00
H-270-2.5
2.5 g
$ 151.00
H-270-5
5 g
$ 265.00
H-270-5-1
5 x 1 g
$ 287.00
H-270-10
10 g
$ 477.00
H-270-10-1
10 x 1 g
$ 488.00
Description

Hygromycin B is an aminoglycoside antibiotic isolated from Streptomyces hygroscopicus. It is commonly used to study protein synthesis. Aside from its efficacy against bacteria, fungi, and higher eukaryotic cells, hygromycin B is also an antiviral agent inhibiting translation upon selectively entering cells made permeable due to viral infection. It works as a standard selection antibiotic in gene experiments, especially for selection of hygromycin resistance gene transformed cells.

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Specifications
CAS Number 31282-04-9
Technical Resources
IPTG
Catalog ID
Size
Pricing
More Info
IPTG product image
I2481C
1 g
$ 16.00
I2481C5
5 g
$ 25.00
I2481C25
25 g
$ 108.00
I2481C50
50 g
$ 173.00
I2481C100
100 g
$ 329.00
I2481C200
200 g
$ 636.00
I2481C300
300 g
$ 848.00
I2481C400
400 g
$ 1101.00
I2481C500
500 g
$ 1327.00
Description

IPTG is an analog of galactose that is non-metabolizable and inactivates the lac repressor to induce synthesis of β-galactosidase in E. coli. The expression of cloned genes under the control of the lac operon is induced by IPTG. It is also a substrate for thigalactoside transacetylase and has been reported to induce penicillinase in bacteria.

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Specifications
CAS Number 367-93-1
Technical Resources
Kanamycin Monosulfate, USP Grade
Catalog ID
Size
Pricing
More Info
Kanamycin Monosulfate, USP Grade product image
K-120-5
5 g
$ 21.00
K-120-10
10 g
$ 41.00
K-120-25
25 g
$ 86.00
K-120-50
50 g
$ 163.00
K-120-100
100 g
$ 304.00
K-120-250
250 g
$ 705.00
Description

Kanamycin is an aminoglycoside antibiotic isolated from Streptomyces kanamyceticus. It is effective against gram-positive and gram-negative bacteria as well as Mycoplasma species. Kanamycin is commonly used to select for bacteria that have been transformed with a kanamycin-resistant gene and plant tissues that have the NPT II (APH3) gene incorporated in them. Kanamycin is very soluble in aqueous solution and is typically used in concentrations of 50-100 µg/ml.

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Specifications
CAS Number 25389-94-0
Technical Resources
Nourseothricin Sulfate (Streptothricin Sulfate) (NTC or clonNAT)
Catalog ID
Size
Pricing
More Info
Nourseothricin Sulfate (Streptothricin Sulfate) (NTC or clonNAT) product image
N-500-100
100 mg
$ 68.00
N-500-500
500 mg
$ 180.00
N-500-1
1 g
$ 257.00
N-500-2
2 x 1 g
$ 472.00
N-500-3
3 x 1 g
$ 678.00
N-500-4
4 x 1 g
$ 864.00
N-500-5
5 x 1 g
$ 1029.00
Description

Nourseothricin is a broad-spectrum antibiotic derived from Streptomyces noursei. In addition to being effective on prokaryotic cells of gram-positive and gram-negative bacteria, various fungi including Candida albicans, and certain DNA and RNA viruses, it is also effective on eukaryotic cells of higher eukaryotes. It has been used as a selection agent for cells containing the gene conferring resistance to it.

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Specifications
CAS Number 96736-11-7
Technical Resources
Proteinase K Solution 20 mg/ml
Catalog ID
Size
Pricing
More Info
Proteinase K Solution 20 mg/ml product image
P-480-SL2
2 ml
$ 38.00
P-480-SL4
2 x 2 ml
$ 64.00
P-480-SL10
5 x 2 ml
$ 135.00
Description
GoldBio's Proteinase K solution is pre-made in 20 mg/ml concentration aliquots so that you don't have to worry about making it yourself. Now you can have the quality products that you have come to know and count on from GoldBio and combine it with the convenience of a pre-made solution. Proteinase K is a highly reactive nonspecific serine protease that belongs to the subtilisin family of proteins. It cleaves at the carboxylic acid side of aliphatic, aromatic, or hydrophobic amino acids. Proteinase K is capable of inactivating RNases and DNases and is used in the isolation View product page →
Specifications
CAS Number 39450-01-6
Technical Resources
Proteinase K, RNase/DNase free
Catalog ID
Size
Pricing
More Info
Proteinase K, RNase/DNase free product image
P-480-100
100 mg
$ 52.00
P-480-500
5 x 100 mg
$ 159.00
P-480-1
1 g
$ 199.00
P-480-2
2 x 1 g
$ 389.00
P-480-3
3 x 1 g
$ 579.00
P-480-4
4 x 1 g
$ 764.00
P-480-5
5 x 1 g
$ 945.00
Description
Proteinase K is a highly reactive nonspecific serine protease that belongs to the subtilisin family of proteins. It cleaves at the carboxylic acid side of aliphatic, aromatic, or hydrophobic amino acids. Proteinase K is capable of inactivating RNases and DNases and is used in the isolation or preparation of high molecular weight nucleic acids. Proteinase K is also useful for helping to characterize enzymes, due to its cleavage specificity. This enzyme was designated proteinase K because of its ability to hydrolyze keratin. Proteinase K is stable in a wide variety of detergents and buffer salts and at various temperatures and View product page →
Specifications
CAS Number 39450-01-6
Technical Resources
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