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. Albumin, Bovine Fraction V, BSA, 100 Grams CAS# 9048-46-8
    Manufacturer: Research Products International
    Mol. Wt: Common Name: BSA Formula: Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 9048-46-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $168.30
  2. PEG 1000, Polyethylene Glycol 1000, 1 Kilogram CAS# 25322-68-3
    Manufacturer: Research Products International
    Mol. Wt:950 to 1,050 Common Name: Polyethylene Glycol 1000 Formula: Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.7, Cas#: 25322-68-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  3. Triton X-100, 500 ML
    Manufacturer: Research Products International
    Dimensions: 2.5 X 7 X 2.5 Weight: 1.24 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $35.10
  4. PEG 8000, Polyethylene Glycol 8000, 500 Grams CAS# 25322-68-3
    Manufacturer: Research Products International
    Mol. Wt:7,000 to 9,000 Common Name: Polyethylene Glycol 8000 Formula: Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 25322-68-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $30.65
  5. POLYOXYETHYLENESORBITAN, MONOOLEATE , TWEEN 80, 4 LITER CAS# 9005-65-6
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Polyoxyethylenesorbitan, Monooleate Formula: Dimensions: 7.00 x 11.00 x 3.00, Weight: 9.6, Cas#: 9005-65-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $99.90
  6. PBS, 100 ml Tablets
    Manufacturer: Research Products International
    Dimensions: 2.00 x 3.88 x 2.00 Weight: 0.39 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $61.60
  7. Ficoll 400, Polysucrose 400, 5 Grams CAS# 26873-85-8
    Manufacturer: Research Products International
    Mol. Wt:400000 Common Name: Polysucrose 400 Formula: Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 26873-85-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $38.35
  8. Cantharidin, 10 MG CAS# 56-25-7
    Manufacturer: Research Products International
    Mol. Wt:196.2 Common Name: Formula: C10H12O4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 56-25-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $177.65
  9. Glycine, Free Base, 500 Grams CAS# 56-40-6
    Manufacturer: Research Products International
    Mol. Wt:75.1 Common Name: Formula: C2H5NO2 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.25, Cas#: 56-40-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $57.90
  10. Choline Chloride, 2.5 Kilograms CAS# 67-48-1
    Manufacturer: Research Products International
    Mol. Wt:139.6 Common Name: Formula: C5H14NOCl Dimensions: 8.13 x 7.25 x 8.13, Weight: 6.29, Cas#: 67-48-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $222.20
  11. Tween 20, Polyoxyethylenesorbitan Monolaurate, 4 Liters CAS# 9005-64-5
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Polyoxyethylenesorbitan Monolaurate Formula: Dimensions: 7.00 x 12.00 x 4.00, Weight: 10.2, Cas#: 9005-64-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $139.05
  12. Distilled Water, Laboratory Reagent Grade, 10 Liter Cubitainer CAS# 7732-18-5
    Manufacturer: Research Products International
    Mol. Wt:18.02 Common Name: Formula: H2O Dimensions: 10.00 x 10.00 x 10.00, Weight: 25, Cas#: 7732-18-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  13. CHAPS, 3-, 3-Cholamidopropyl, -dimethylammonio, -1-propanesulfonate, 1 Gram CAS# 26926106
    Manufacturer: Research Products International
    Mol. Wt:614.9 Common Name: 3-[(Cholamidopropyl) dimethylammonio]-1-propanesulfonate Formula: C32H58N2O7S Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 26926106 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $41.75
  14. Calcium Gluconate, Monohydrate, 250 Grams CAS# 299-28-5
    Manufacturer: Research Products International
    Purity: >98.5% Soluble in: Water Store at: Room Temperature Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:448.4 Common Name: Formula: C12H22CaO14-H2O Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.64, C (1 per EA)
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    $30.65
  15. Tris Base Ultra Pure, Tris , Hydroxymethyl, Aminomethane, 250 Grams CAS# 77-86-1
    Manufacturer: Research Products International
    Mol. Wt:121.1 Common Name: Tris (Hydroxymethyl) Aminomethane Formula: C4H11NO3 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.38, Cas#: 77-86-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $56.50
  16. Choline Chloride, 100 Grams CAS# 67-48-1
    Manufacturer: Research Products International
    Mol. Wt:139.6 Common Name: Formula: C5H14NOCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 67-48-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $24.45
  17. Choline Chloride, 250 Grams CAS# 67-48-1
    Manufacturer: Research Products International
    Mol. Wt:139.6 Common Name: Formula: C5H14NOCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.64, Cas#: 67-48-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  18. EDTA 0.5M Solution pH 8.0, 250 Milliliters
    Manufacturer: Research Products International
    Dimensions: 3.38 x 4.63 x 3.38 Weight: 0.17 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  19. EDTA Ferric Sodium Salt, Ethylenediaminetetraacetic acid ferric sodium salt, 100 Grams CAS# 15708-41-5
    Manufacturer: Research Products International
    Usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:367 Common Name: Ethylenediaminetetraacetic acid ferric sodium salt Formula: C10H12N2O8FeNa Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 15708-41-5 Resea (1 per EA)
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    $38.35
  20. L-Cysteine Hydrochloride Monohydrate, 100 Grams CAS# 7048-04-6
    Manufacturer: Research Products International
    Mol. Wt:175.6 Common Name: Formula: C3H7NO2S-HCl-H2O Dimensions: 2.50 x 3.00 x 2.50, Weight: 0.32, Cas#: 7048-04-06 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  21. Tris Base Ultra Pure, Tris , Hydroxymethyl, Aminomethane, 5 Kilograms CAS# 77-86-1
    Manufacturer: Research Products International
    Mol. Wt:121.1 Common Name: Tris (Hydroxymethyl) Aminomethane Formula: C4H11NO3 Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.43, Cas#: 77-86-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $468.50
  22. MOPS [3-(N-morpholino)-propanesulfonic acid], 500 Grams CAS# 1132-61-2
    Manufacturer: Research Products International
    Mol. Wt:209.3 Common Name: 3-(N-Morpholino)propanesulfonic acid Formula: C7H15NO4S Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 1132-61-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $215.95
  23. Deoxycholic Acid Sodium Salt, 100 Grams CAS# 302-95-4
    Manufacturer: Research Products International
    Mol. Wt:414.58 Common Name: Formula: C24H39NaO4 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 302-95-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $115.25
  24. Cellulase RS, Onozuka RS, 5 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: 0.11, Cas#: 9012-54-8 Research (1 per EA)
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    $391.60
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