Welcome to Gold Biotechnology, a Saint Louis based biotech company. For over thirty years we have endeavored to provide life scientists around the world access to the best reagents for the best price.

Here, you will find information and discounts exclusive only to you. If you have any questions or you would like more information, contact your personal representative Brad. He is looking forward to working with you and is here to ensure your needs are met.

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I’m Brad, your GoldBio Account Representative and Sales Team Manager. When I was young I heard the Wayne Gretzky quote “You miss one hundred percent of the shots you don’t take.” From that point on my main focus was hockey, especially collegiate hockey. I yearned to someday play at Yost Ice Arena where all my favorite games were played. Unfortunately, I was about as steady on the ice as a baby giraffe, so my hockey career ended before it even began. I then decided to go into the field of Pre-Medical science and found my calling in biotech sales. I love traveling to Michigan, Texas, and the other great states in my territory. The contrast between the frozen north and desert heat makes for a good life! If you need anything at all, please be sure to email me and let me know. I am here to help you, not to sell you.

So, how can I help?


Brad Macklin

Account Representative for Colorado


Instant Quotes:

Instant quotes are useful for when you need an immediate quote of the items in your shopping cart. Watch the tutorial on Instant Quotes below to see how it works.

Ampicillin (Sodium), USP Grade

Catalog ID Size Pricing
A-301-5 5 g $ 35.00
A-301-10 10 g $ 49.00
A-301-25 25 g $ 65.00
A-301-100 100 g $ 215.00
A-301-500 500 g $ 969.00


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.

Product Specifications

Catalog ID A-301
CAS # 69-52-3
MW 371.39 g/mol
Storage/Handling Store desiccated at -20°C.
Packs & Pricing
A-301-5 In stock 5 g $ 35.00
A-301-10 In stock 10 g $ 49.00
A-301-25 In stock 25 g $ 65.00
A-301-100 In stock 100 g $ 215.00
A-301-500 In stock 500 g $ 969.00

Carbenicillin (Disodium), USP Grade

Catalog ID Size Pricing
C-103-5 5 g $ 59.00
C-103-25 25 g $ 195.00
C-103-50 50 g $ 339.00
C-103-100 100 g $ 575.00
C-103-250 250 g $ 1,155.00


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.

Product Specifications

Catalog ID C-103
CAS # 4800-94-6
MW 422.36 g/mol
Packs & Pricing
C-103-5 In stock 5 g $ 59.00
C-103-25 In stock 25 g $ 195.00
C-103-50 In stock 50 g $ 339.00
C-103-100 In stock 100 g $ 575.00
C-103-250 In stock 250 g $ 1,155.00

Kanamycin Monosulfate, USP Grade

Catalog ID Size Pricing
K-120-5 5 g $ 35.00
K-120-10 10 g $ 65.00
K-120-25 25 g $ 125.00
K-120-50 50 g $ 225.00
K-120-100 100 g $ 415.00
K-120-250 250 g $ 949.00


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.

Product Specifications

Catalog ID K-120
CAS # 25389-94-0
MW 582.58 g/mol
Storage/Handling Store desiccated at -20°C.
Packs & Pricing
K-120-5 In stock 5 g $ 35.00
K-120-10 In stock 10 g $ 65.00
K-120-25 In stock 25 g $ 125.00
K-120-50 In stock 50 g $ 225.00
K-120-100 In stock 100 g $ 415.00
K-120-250 In stock 250 g $ 949.00

100 bp DNA Ladder

Catalog ID Size Pricing
D001-500 500 µL $ 49.00
D001-1000 2 x 500 μL $ 95.00
D001-1500 3 x 500 μL $ 135.00
D001-2000 4 x 500 μL $ 169.00
D001-2500 5 x 500 μL $ 189.00
D001-3000 6 x 500 μL $ 215.00


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.

Product Specifications

Catalog ID D001
Storage/Handling Store at room temperature for 6 months. Store at -20°C for 24 months.
Packs & Pricing
D001-500 In stock 500 µL $ 49.00
D001-1000 In stock 2 x 500 μL $ 95.00
D001-1500 In stock 3 x 500 μL $ 135.00
D001-2000 In stock 4 x 500 μL $ 169.00
D001-2500 In stock 5 x 500 μL $ 189.00
D001-3000 In stock 6 x 500 μL $ 215.00

Agarose LE (Molecular Biology Grade)

Catalog ID Size Pricing
A-201-100 100 g $ 125.00
A-201-500 500 g $ 415.00
A-201-1000 1 kg $ 705.00


Agarose LE (Low Electroendosmosis) is Molecular Biology Grade and is specifically designed for the superior separation of nucleic acids, with maximally crisp band resolution, and is also ideal for cloning and cloning related experiments.

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.

Product Specifications

Catalog ID A-201
CAS # 9012-36-6
Storage/Handling Store at room temperature.
Packs & Pricing
A-201-100 In stock 100 g $ 125.00
A-201-500 In stock 500 g $ 415.00
A-201-1000 In stock 1 kg $ 705.00


Catalog ID Size Pricing
I2481C 1 g $ 25.00   $ 23.00
I2481C5 5 g $ 35.00   $ 32.00
I2481C25 25 g $ 145.00   $ 131.00
I2481C50 50 g $ 225.00   $ 203.00
I2481C100 100 g $ 415.00   $ 374.00
I2481C200 200 g $ 795.00   $ 716.00
I2481C300 300 g $ 1,059.00   $ 954.00
I2481C400 400 g $ 1,375.00   $ 1,238.00
I2481C500 500 g $ 1,655.00   $ 1,490.00


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.

Product Specifications

Catalog ID I2481
Name(s) IPTG
CAS # 367-93-1
Formula C9H18O5S
MW 238.30 g/mol
Storage/Handling Store desiccated at -20°C. Protect from light.
Packs & Pricing
I2481C In stock 1 g $ 25.00
$ 23.00
I2481C5 In stock 5 g $ 35.00
$ 32.00
I2481C25 In stock 25 g $ 145.00
$ 131.00
I2481C50 In stock 50 g $ 225.00
$ 203.00
I2481C100 In stock 100 g $ 415.00
$ 374.00
I2481C200 In stock 200 g $ 795.00
$ 716.00
I2481C300 In stock 300 g $ 954.00
I2481C400 In stock 400 g $ 1,375.00
$ 1,238.00
I2481C500 In stock 500 g $ 1,655.00
$ 1,490.00

D-Luciferin, Potassium Salt (Proven and Published®)

Catalog ID Size Pricing
LUCK-100 100 mg $ 54.00
LUCK-250 250 mg $ 129.00
LUCK-300 300 mg $ 151.00
LUCK-500 500 mg $ 194.00
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 $ 1,150.00
LUCK-10G 10 x 1 g $ 2,280.00


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. ®

Product Specifications

Catalog ID LUCK®
Name(s) LUCK®, Proven and Published®;
D-Luciferin, Potassium Salt;
4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid potassium salt;
CAS # 115144-35-9
Formula C11H7N2O3S2K
MW 318.42 g/mol
Storage/Handling Store desiccated at -20°C. Protect from light.
PubChem Chemical ID 44134804
Packs & Pricing
LUCK-100 In stock 100 mg $ 54.00
LUCK-250 In stock 250 mg $ 129.00
LUCK-300 In stock 300 mg $ 151.00
LUCK-500 In stock 500 mg $ 194.00
LUCK-1G In stock 1 g $ 245.00
LUCK-2G In stock 2 x 1 g $ 472.00
LUCK-3G In stock 3 x 1 g $ 702.00
LUCK-4G In stock 4 x 1 g $ 928.00
LUCK-5G In stock 5 x 1 g $ 1,150.00
LUCK-10G In stock 10 x 1 g $ 2,280.00


Catalog ID Size Pricing
TCEP1 1 g $ 29.00
TCEP2 2 g $ 49.00
TCEP5 5 g $ 89.00
TCEP10 10 g $ 145.00
TCEP25 25 g $ 289.00
TCEP50 50 g $ 529.00
TCEP100 100 g $ 1,035.00


TCEP-HCl is an odorless reducing agent suitable for protein applications and in the preparation for electrophoresis. TCEP is water soluble, is stable in a variety of solutions and is particularly useful in the labeling of cysteine residues with maleimides, preventing the cysteines from forming disulfide bonds. As a reducing agent, TCEP has many other desirable features.

Product Specifications

Catalog ID TCEP
Name(s) TCEP-HCl;
Tris (2-Carboxyethyl) phosphine Hydrochloride
CAS # 51805-45-9
Grade Molecular Biology Grade
Formula C9H15O6P • HCl
MW 286.65 g/mol
PubChem Chemical ID 2734570
Storage/Handling Store desiccated at -20°C.
Packs & Pricing
TCEP1 In stock 1 g $ 29.00
TCEP2 In stock 2 g $ 49.00
TCEP5 In stock 5 g $ 89.00
TCEP10 In stock 10 g $ 145.00
TCEP25 In stock 25 g $ 289.00
TCEP50 In stock 50 g $ 529.00
TCEP100 In stock 100 g $ 1,035.00

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