This category covers everyday reagents for molecular and cell biology work. It includes buffers and buffer components such as Tris base, MOPS, CAPS, Bicine, glycine, 0.5 M EDTA solution at pH 8.0 and PBS tablets; detergents including Triton X-100, Tween 20, Tween 80, CHAPS and sodium deoxycholate; bovine serum albumin as Fraction V powder and 20 mg/ml solution; polymers like PEG 1000, PEG 8000 and Ficoll 400; and DNase- and RNase-free molecular biology grade water, along with enzymes, cofactors and amino acids. Pack sizes run from milligrams to kilograms and from milliliters to multi-liter containers.

Check the grade first: molecular biology grade material is tested for nucleases, while ultra pure and reagent grades are defined by each manufacturer's specification. Then compare purity, form (powder, solution or tablet), pack size against how fast you use the material, and storage conditions. Review the SDS before use and request a Certificate of Analysis when you need lot-level records.

Molecular Biology Reagents: common questions

What are life science or biological reagents?

Biological or life science reagents are the chemicals and biological materials used to prepare, grow, separate or analyze cells, proteins and nucleic acids. Examples include buffers, detergents, salts, proteins such as BSA, enzymes, nucleotides and cofactors, and specially purified water. They are graded by purity and testing, which determines whether they suit routine work or sensitive applications.

What does molecular biology grade mean?

Molecular biology grade generally means the material has been tested for, and found free of detectable, DNase, RNase and often protease activity, so it will not degrade DNA, RNA or proteins in your samples. The exact tests vary by manufacturer, so check the specification sheet or Certificate of Analysis for what was tested and the limits used.

What is a lyophilized reagent?

A lyophilized reagent has been freeze-dried: frozen, then dried under vacuum so the water sublimes. The dry product is usually more stable in storage and shipping than a liquid. Before use it is reconstituted with the volume and type of liquid the manufacturer specifies. After reconstitution, follow the stated storage conditions and shelf life.

Can I get pricing for bulk quantities of reagents?

Yes. Volume and quote pricing is available through the Contact Us page, and approved business accounts can pay by purchase order. Chemicals ship only to business addresses, with a company name required at checkout. Many items ship directly from the manufacturer, so lead times vary by item.

Molecular Biology Reagents

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  1. PIPES DISODIUM SALT, 100G CAS# 27369851
    Manufacturer: Research Products International
    Mol. Wt:346.3 Common Name: Piperazine-N,N'-bis(2-ethanesulfonic acid)disodium salt Formula: C8H16N2Na2O6S2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 27369851 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $126.30
  2. Calcium D-Pantothenate, 100 Grams CAS# -643703
    Manufacturer: Research Products International
    Mol. Wt:476.54 Common Name: Formula: C18H32CaN2O10 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: -643703 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $83.45
  3. L-Aspartic Acid Monopotassium Salt, 500 Grams CAS# 1115-63-5
    Manufacturer: Research Products International
    Mol. Wt:171.2 Common Name: Formula: C4H6KNO4 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.65, Cas#: 1115-63-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $231.00
  4. POPSO, Free Acid, Piperazine-N-N'-bis, hydroxypropane sulfonic acid, , 100 Grams CAS# 68189-43-5
    Manufacturer: Research Products International
    pKa (25°C): 7.7-7.9 pH range: 7.2-8.5 Heavy metals: <0.0005% Water: <10% Mol. Wt:362.4 (anydrous) Common Name: Piperazine-N-N'-bis(hydroxypropane sulfonic acid) Formula: C10H22N2O8S2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 68189-43-5 Resea (1 per EA)
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    $92.25
  5. Miconazole, 5 Grams CAS# 22916-47-8
    Manufacturer: Research Products International
    Mol. Wt:416.13 Common Name: Formula: C18H14CI4N2O Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 22916-47-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $107.55
  6. Guanidine Thiocyanate, 100 Grams CAS# 593-84-0
    Manufacturer: Research Products International
    Mol. Wt:118.2 Common Name: Formula: CH5N3 - HSCN Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 593-84-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $61.60
  7. L-Threonine, 100 Grams CAS# 72-19-5
    Manufacturer: Research Products International
    Mol. Wt:119.2 Common Name: Formula: C4H9NO3 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 72-19-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $137.10
  8. Ribonuclease A, 500 MG CAS# 9001-99-4
    Manufacturer: Research Products International
    Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 9001-99-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $430.20
  9. L-Arginine Monohydrochloride, 1 Kilogram CAS# 1119-34-2
    Manufacturer: Research Products International
    Mol. Wt:210.7 Common Name: Formula: C6H14N4O2 - HCl Dimensions: 4.88 X 6.0 X 4.88, Weight: 2.4, Cas#: 1119-34-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $320.65
  10. 2-Ketoglutaric Acid Monopotassium Salt, 25 Grams CAS# 997-43-3
    Manufacturer: Research Products International
    Mol. Wt:184.19 Common Name: Formula: C5H5O5K Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 997-43-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $169.70
  11. Cellulase RS, Onozuka RS, 10 Grams CAS# 9012-54-8
    Manufacturer: Research Products International
    Soluble in: Water Optimum pH range: 4.0-5.0 Optimum temperature range: 50° to 60°C Store at: 0-5°C Product usually ships within 24 hours. Mol. Wt: Common Name: Onozuka RS Formula: Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.13, Cas#: 9012-54-8 Research (1 per EA)
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    $615.20
  12. L-Histidine, 500 Grams CAS# 71-00-1
    Manufacturer: Research Products International
    Mol. Wt:155.2 Common Name: Formula: C6H9N3O2 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 71-00-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $285.20
  13. a-Cyclodextrin, 25 Grams CAS# 10016-20-3
    Manufacturer: Research Products International
    Mol. Wt:972.9 Common Name: Formula: C36H60O30 Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 10016-20-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $515.30
  14. L-Glutamine, 1 Kilogram CAS# 56-85-9
    Manufacturer: Research Products International
    Mol. Wt:146.14 Common Name: Formula: C5H10N2O3 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 56-85-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $348.20
  15. Schenk and Hildenbrandt, 250 ML
    Manufacturer: Research Products International
    Dimensions: 3.38 x 4.63 x 3.38 Weight: 0.16 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  16. PMSF, Phenylmethylsulfonyl fluoride, 100 Grams CAS# 329-98-6
    Manufacturer: Research Products International
    Mol. Wt:174.2 Common Name: Phenylmethylsulfonyl fluoride Formula: C7H7FO2S Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 329-98-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $797.95
  17. Imipenem Monohydrate, 5 MG CAS# 74431-23-5
    Manufacturer: Research Products International
    Mol. Wt:317.36 Common Name: Formula: C12H17N3O4S - H2O Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 74431-23-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $126.30
  18. Amygdalin, D-Mandelonitrile-b-gentiobioside, Laetrile, 5 Gram CAS# 29883-15-6
    Manufacturer: Research Products International
    Mol. Wt:457.44 Common Name: [D-Mandelonitrile-b-gentiobioside] [Laetrile] Formula: C20H27NO11 Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 29883-15-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $99.90
  19. BES, N,N-bis, 2-Hydroxyethyl, -2-aminoethanesulfonic acid, 250 Grams CAS# 10191-18-1
    Manufacturer: Research Products International
    Mol. Wt:213.2 Common Name: N,N-Bis(2-hydroxyethyl)-2-aminoethane sulfonic acid Formula: C6H15NO5S Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.64, Cas#: 10191-18-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $222.20
  20. L-Tryptophan, 25 Grams CAS# 73-22-3
    Manufacturer: Research Products International
    Mol. Wt:204.2 Common Name: Formula: C11H12N2O2 Dimensions: 2.00 x 3.88 x 2.00, Weight: 0.33, Cas#: 73-22-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $73.50
  21. Ammonium Acetate, 5 Kilograms CAS# 631-61-8
    Manufacturer: Research Products International
    Mol. Wt:77.08 Common Name: Formula: C2H7NO2 Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.4, Cas#: 631-61-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $268.45
  22. Cytosine, 100 Grams CAS# 71-30-7
    Manufacturer: Research Products International
    Purity: >99% Soluble in: 0.5M HCl Store at: Room Temperature Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:111.1 Common Name: Formula: C4H5N3O Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.31, Cas#: 71- (1 per EA)
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    $489.50
  23. MES Monohydrate, 2-, N-Morpholino, -ethanesulfonic acid, 500 Grams CAS# 145224-94-8
    Manufacturer: Research Products International
    Mol. Wt:213.24 Common Name: 2-(N-Morpholino)ethanesulfonic acid Formula: C6H13NO4S • H2O Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 145224-94-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $421.10
  24. EDTA Disodium Salt, Ethylenediaminetetra-acetic acid, disodium salt dihydrate, 5 Kilograms CAS# 6381-92-6
    Manufacturer: Research Products International
    Mol. Wt:372.2 Common Name: Ethylenediaminetetraacetic acid disodium salt dihydrate Formula: C10H14N2O8Na2 - 2H2O Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.4, Cas#: 6381-92-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $681.30
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