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. Bluo-Gal, 100 MG CAS# 97753-82-7
    Manufacturer: Research Products International
    Protect from light and moisture. Purity: >98% Soluble in: DMSO and DMFO Store at: -20°C Allow to warm to room temperature before using. Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:374.2 Common Name (1 per EA)
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    $64.15
  2. D-Pantothenic Acid Hemicalcium Salt, 500 Grams CAS# -643703
    Manufacturer: Research Products International
    Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: -643703 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $320.65
  3. EGTA, Ethylene glycol-bis, 2-aminoethylether, -N,N,N',N'-tetraacetic acid, 100 Grams CAS# 67-42-5
    Manufacturer: Research Products International
    Mol. Wt:380.35 Common Name: Ethylene glycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid Formula: C14H24N2O10 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 67-42-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $285.20
  4. Thimerosal, 500 Grams CAS# 54-64-8
    Manufacturer: Research Products International
    Mol. Wt:404.8 Common Name: Formula: C9H9HgNaO2S Dimensions: 2.75 x 6.75 x 2.75, Weight: 0.22, Cas#: 54-64-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $5,762.40
  5. MUP, 250 MG CAS# 3368-04-5
    Manufacturer: Research Products International
    Mol. Wt:256.15 Common Name: 4-Methylumbelliferyl Phosphate Formula: C10H9O6P Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 3368-04-05 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $152.40
  6. BSA Blocking Buffer Solution in TBS with Azide, 200 Milliliters
    Manufacturer: Research Products International
    Dimensions: 5.11 x 5.11 x 5.11 Weight: 1 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $162.35
  7. HEPPSO, N-, 2-Hydroxyethyl, piperazine-N'-, 2-hydroxypropanesulfonic acid, , 25 Grams CAS# 68399-78-0
    Manufacturer: Research Products International
    Purity: >99% pKa (25°C): 7.7-7.9 pH range: 7.1-8.5 Heavy metals: <0.0005% Soluble in water Store at room temperature?? Cas No.?68399-78-0 Usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:268.3 Common Name: (1 per EA)
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    $53.65
  8. PHENYL-B-D-GALACTOPYRANOSIDE, P-GAL, 5 GRAM CAS# 2818-58-8
    Manufacturer: Research Products International
    Mol. Wt:256.26 Common Name: Phenyl-β-D-Galactopyranoside Formula: C12H16O6 Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 2818-58-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $234.70
  9. 2-Ketoglutaric Acid Monopotassium Salt, 500 Grams CAS# 997-43-3
    Manufacturer: Research Products International
    Mol. Wt:184.19 Common Name: Formula: C5H5O5K Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.25, Cas#: 997-43-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,158.50
  10. SSPE BUFFER, 10 LITER, 20X CONCENTRATED RATE POWDER BLEND, NO LIQUID
    Manufacturer: Research Products International
    Dimensions: 4.88 x 10.25 x 4.88 Weight: 4.9 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $107.55
  11. SUCCINIC ACID, 1 KILOGRAM CAS# 110-15-6
    Manufacturer: Research Products International
    Mol. Wt:118.1 Common Name: Butanedioic Acid Formula: C4H6O4 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 110-15-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $250.30
  12. TRIS ACETATE ULTRA PURE, 1 KILOGRAM CAS# 6850-28-8
    Manufacturer: Research Products International
    Mol. Wt:181.19 Common Name: Formula: C14H11NO3C2H4O2 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.41, Cas#: 6850-28-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $524.40
  13. Glycerol, ACS Grade, 20 Liters
    Manufacturer: Research Products International
    Dimensions: 20.00 x 11.00 x 11.00 Weight: 55.4 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $788.00
  14. B-Naphthoxyacetic Acid, 100 Grams CAS# 120-23-0
    Manufacturer: Research Products International
    Soluble in 1N NaOH Store at room temperature Cas No.?120-23-0 Usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:202.2 Common Name: Formula: C12H10O3 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 120-23 (1 per EA)
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    $76.05
  15. Leupeptin Hemisulfate, 1 Gram CAS# 103476-89-7
    Manufacturer: Research Products International
    Mol. Wt:475.6 Common Name: Formula: C20H38N6O4 - 1/2H2SO4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.19, Cas#: 103476-89-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $4,977.85
  16. L-Histidine, 1 Kilogram CAS# 71-00-1
    Manufacturer: Research Products International
    Mol. Wt:155.2 Common Name: Formula: C6H9N3O2 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.42, Cas#: 71-00-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $540.00
  17. Daidzein, 100 MG CAS# 486-66-8
    Manufacturer: Research Products International
    Purity: >98% Soluble in: DMSO Store at: -20. °C Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:254.2 Common Name: 4',7-dihydroxyisoflavone Formula: C15H10O4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03 (1 per EA)
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    $169.70
  18. Glycerol, ACS Grade, 10 Liters
    Manufacturer: Research Products International
    Dimensions: 20.00 x 11.00 x 11.00 Weight: 28 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $403.80
  19. Rubidium Chloride, 500 Grams CAS# 7791-11-9
    Manufacturer: Research Products International
    Mol. Wt:120.9 Common Name: Formula: RbCl Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.13, Cas#: 7791-11-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $3,219.45
  20. L-Cystine, Dihydrochloride, 25 Grams CAS# 10601352
    Manufacturer: Research Products International
    Mol. Wt:313.2 Common Name: Formula: C6H12N2O4S2 - 2HCl Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 10601352 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $73.50
  21. L-Aspartic Acid Monopotassium Salt, 100 Grams CAS# 1115-63-5
    Manufacturer: Research Products International
    Mol. Wt:171.2 Common Name: Formula: C4H6KNO4 Dimensions: 3.50 x 7.00 x 3.50, Weight: 0.32, Cas#: 1115-63-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $99.90
  22. Daidzein, 25 MG CAS# 486-66-8
    Manufacturer: Research Products International
    Purity: >98% Soluble in: DMSO Store at: -20°C Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:254.2 Common Name: 4',7-dihydroxyisoflavone Formula: C15H10O4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03 (1 per EA)
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    $53.65
  23. B-Gentiobiose, 500 MG CAS# 554-91-6
    Manufacturer: Research Products International
    Purity: >98% Soluble in: Water Store at: 2-8°C Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:342.3 Common Name: Amygdalose Formula: C12H22O11 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.04, Cas#: 554-9 (1 per EA)
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    $214.55
  24. TRIS ACETATE ULTRA PURE, 500 GRAMS CAS# 6850-28-8
    Manufacturer: Research Products International
    Mol. Wt:181.19 Common Name: Formula: C14H11NO3C2H4O2 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 6850-28-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $275.55
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