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. PMSF, Phenylmethylsulfonyl fluoride, 25 Grams CAS# 329-98-6
    Manufacturer: Research Products International
    Mol. Wt:174.2 Common Name: Phenylmethylsulfonyl fluoride Formula: C7H7FO2S Dimensions: 1.00 x 3.00 x 1.00, Weight: 0.22, Cas#: 329-98-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $208.30
  2. Bicine Ultra-Pure, 250 Grams CAS# 150-25-4
    Manufacturer: Research Products International
    Mol. Wt:163.2 Common Name: Formula: C6H13NO4 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 150-25-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $117.50
  3. 5-Azacytosine, 4-Amino-1,3.5-triazine-2-one, 1 Gram CAS# 931-86-2
    Manufacturer: Research Products International
    Mol. Wt:112.09 Common Name: 4-Amino-1, 3.5-triazine-2-one Formula: C3H4N4O Dimensions: 1.25 X 1.75 X 1.25, Weight: 0.04, Cas#: 931-86-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $41.75
  4. ADP, Adenosine-5'-diphosphate, disodium salt dihydrate, 1 Gram CAS# 16178-48-6
    Manufacturer: Research Products International
    Mol. Wt:507.2 Common Name: Adenosine-5'-diphosphate, disodium salt, dihydrate Formula: C10H13N5O10P2Na2-2H2O Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.12, Cas#: 16178-48-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $35.50
  5. a-Cyclodextrin, 5 Grams CAS# 10016-20-3
    Manufacturer: Research Products International
    Mol. Wt:972.9 Common Name: Formula: C36H60O30 Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.11, Cas#: 10016-20-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $152.40
  6. Aprotinin, 25 MG CAS# 9087-70-1
    Manufacturer: Research Products International
    Mol. Wt:6512 Common Name: Formula: C284H432N84O79S7 Dimensions: 1.25 X 1.75 X 1.25, Weight: 0.03, Cas#: 9087-70-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $309.90
  7. 5-Azacytosine, 4-Amino-1,3.5-triazine-2-one, 5 Grams CAS# 931-86-2
    Manufacturer: Research Products International
    Mol. Wt:112.09 Common Name: 4-Amino-1, 3.5-triazine-2-one Formula: C3H4N4O Dimensions: 3.38 X 4.63 X 3.38, Weight: 0.12, Cas#: 931-86-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $52.25
  8. B-Gentiobiose, Amygdalose, 1 Gram 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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    $373.15
  9. 5-Azacytosine [4-Amino-1,3.5-triazine-2-one], 1 Kilogram CAS# 931-86-2
    Manufacturer: Research Products International
    Mol. Wt:112.09 Common Name: 4-Amino-1, 3.5-triazine-2-one Formula: C3H4N4O Dimensions: 8.13 x 7.25 x 8.13, Weight: 2.9, Cas#: 931-86-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $3,342.30
  10. ADA, Biological Buffer, 50kg, CAS# 26239-55-4
    Manufacturer: Spectrum Chemical
    ADA, Biological Buffer (1 per EA )
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    $7,550.25
  11. HEPPSO, N-, 2-Hydroxyethyl, piperazine-N'-, 2-hydroxypropanesulfonic acid, , 100 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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    $189.85
  12. Ribonuclease A, 250 MG CAS# 9001-99-4
    Manufacturer: Research Products International
    Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.19, Cas#: 9001-99-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $233.85
  13. CAPS, 3-, Cyclohexylamino, -1-propanesulphonic acid, 1 Kilograms CAS# 1135-40-6
    Manufacturer: Research Products International
    Mol. Wt:221.3 Common Name: 3-(Cyclohexylamino)-1 propanesulphonic acid Formula: C9H19NO3S Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.26, Cas#: 1135-40-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $357.85
  14. Cytidine, 25 Grams CAS# 65-46-3
    Manufacturer: Research Products International
    Mol. Wt:243.22 Common Name: Formula: C9H13N3O5 Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 65-46-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $99.90
  15. Leupeptin Hemisulfate, 250 MG 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: 0.25, Cas#: 103476-89-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,336.50
  16. DL-Thioctic Acid, DL-a-Lipoic acid, 25 Grams CAS# 1077-28-7
    Manufacturer: Research Products International
    Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:206.3 Common Name: DL-a-Lipoic acid Formula: C8H14O2S2 Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 1077-28-7 Research or further manufacturing u (1 per EA)
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    $285.20
  17. MUP, 4-Methylumbelliferyl Phosphate, 1 Gram 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: 0.04, Cas#: 3368-04-05 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $268.45
  18. TRIS Hydrochloride [Tris(hydroxymethyl) aminomethane HCl], 25 Kilograms CAS# 1185-53-1
    Manufacturer: Research Products International
    Mol. Wt:157.6 Common Name: Tris(hydroxymethyl) aminomethane hydrochloride Formula: C4H11NO3-HCl Dimensions: 13.50 x 13.50 x 15.50, Weight: 59.99, Cas#: 1185-53-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,354.60
  19. BIS-TRIS Propane, 1,3-Bis , TRIS, hydroxymethyl, methylamino, propane, 500 Grams CAS# 64431-96-5
    Manufacturer: Research Products International
    Mol. Wt:282.3 Common Name: 1,3-Bis(Tris(Hydroxymethyl) methylamino)propane Formula: C11H26N2O6 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 64431-96-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $444.40
  20. Adenosine, Free Base, 9-B-D-Ribofuranosyladenine, 1 Kilogram CAS# 58-61-7
    Manufacturer: Research Products International
    Mol. Wt:267.24 Common Name: 9-B-D-Ribofuranosyladenine Formula: C10H13N5O4 Dimensions: 4.9X7.25X4.9, Weight: 2.4, Cas#: 58-61-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $977.25
  21. Schenk and Hildenbrandt, 100 ML
    Manufacturer: Research Products International
    Dimensions: 3.38 x 4.63 x 3.38 Weight: 0.14 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $30.65
  22. Tris Base Ultra Pure, Tris , Hydroxymethyl, Aminomethane, 10 Kilograms CAS# 77-86-1
    Manufacturer: Research Products International
    Mol. Wt:121.1 Common Name: Tris (Hydroxymethyl) Aminomethane Formula: C4H11NO3 Dimensions: 10.00 x 11.25 x 10.00, Weight: 24, Cas#: 77-86-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $891.00
  23. B-Naphthoxyacetic Acid, 500 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 7.00 x 3.50, Weight: 1.24, Cas#: 120-23 (1 per EA)
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    $311.60
  24. Aprotinin, 10 MG CAS# 9087-70-1
    Manufacturer: Research Products International
    Mol. Wt:6512 Common Name: Formula: C284H432N84O79S7 Dimensions: 1.25 X 1.75 X 1.25, Weight: 0.03, Cas#: 9087-70-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $118.65
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