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. DL-Threonine, 500 Grams CAS# 80-68-2
    Manufacturer: Research Products International
    EINECS Number: 201-300-6 Mol. Wt:19.12 g/mol Common Name: Formula: C4H9NO3 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.25, Cas#: 80-68-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,939.45
  2. Casein Blocking Solution in TBS, 1 Liter CAS# 7732-18-5; 9000-71-9; 1185-53-1; 7647-14-5
    Manufacturer: Research Products International
    Dimensions: 3.50 x 8.50 x 3.50, Weight: 2.4, Cas#: 7732-18-5; 9000-71-9; 1185-53-1; 7647-14-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $169.70
  3. 2-Ketoglutaric Acid Monopotassium Salt, 100 Grams CAS# 997-43-3
    Manufacturer: Research Products International
    Mol. Wt:184.19 Common Name: Formula: C5H5O5K Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 997-43-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $479.85
  4. DTE, Dithioerythreitol, 10 Grams CAS# 6892-68-8
    Manufacturer: Research Products International
    Mol. Wt:154.2 Common Name: Dithioerythritol Formula: C4H10O2S2 Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.13, Cas#: 6892-68-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $191.25
  5. 1-Naphthyl Phosphate Monosodium Salt Monohydrate, 25 Grams CAS# 81012-89-7
    Manufacturer: Research Products International
    Mol. Wt:264.2 Common Name: Formula: C10H8NaO4P - H2O Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 81012-89-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $296.00
  6. Dextran Sulfate Sodium Salt, 100 Grams CAS# 9011-18-1
    Manufacturer: Research Products International
    Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 9011-18-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $229.30
  7. POPSO, Free Acid, Piperazine-N-N'-bis, hydroxypropane sulfonic acid, , 25 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: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 68189-43-5 Resea (1 per EA)
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    $46.00
  8. L-VALINE, USP GRADE, 100GM CAS# 72-18-4
    Manufacturer: Research Products International
    Mol. Wt:117.2 Common Name: Formula: C5H11NO2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 72-18-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $53.65
  9. L-Lysine Monohydrate, 100 Grams CAS# 13793727
    Manufacturer: Research Products International
    Mol. Wt:164.21 Common Name: Formula: C6H14N2O2-H2O Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 13793727 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $268.45
  10. Triethanolamine, Free Base, 2,2',2in-Nitrilothriethanol, 1 Liter CAS# 102-71-6
    Manufacturer: Research Products International
    Mol. Wt:149.2 Common Name: 2,2',2"-Nitrilothriethanol Formula: C6H15NO3 Dimensions: 3.50 x 9.00 x 3.50, Weight: 2.61, Cas#: 102-71-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $104.75
  11. Pyruvic Acid Sodium Salt, Sodium Pyruvate, 1 Kilogram CAS# 113-24-6
    Manufacturer: Research Products International
    Mol. Wt:110.04 Common Name: Sodium Pyruvate Formula: C3H3NaO3 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 113-24-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $311.30
  12. Chymostatin, 5 MG CAS# 9076-44-2
    Manufacturer: Research Products International
    Mol. Wt:602 to 606 Common Name: Formula: C25H30N6O5 - X X = Leucine (A), Valine (B), or Isoleucine (C) Dimensions: 0.25 x 1.75 x 0.25, Weight: 0.02, Cas#: 9076-44-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $303.35
  13. (-)-p-Bromotetramisole oxalate, 5 MG CAS# 62284-79-1
    Manufacturer: Research Products International
    Mol. Wt:373.2 Common Name: Formula: C11H11BrN2S-C2H2O4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 62284-79-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $169.70
  14. D-Glucuronic Acid Sodium Salt Monohydrate, 5 Grams CAS# 207300-70-7
    Manufacturer: Research Products International
    Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.25, Cas#: 207300-70-7 Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $44.55
  15. ADA, N-, Carbamoylmethyl, iminodiacetic acid, 25 Grams CAS# 26239-55-4
    Manufacturer: Research Products International
    Dimensions: 1.63X3X1.63 Weight: 0.22 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $46.00
  16. Adenosine, Free Base, 9-B-D-Ribofuranosyladenine, 25 Grams CAS# 58-61-7
    Manufacturer: Research Products International
    Mol. Wt:267.24 Common Name: 9-B-D-Ribofuranosyladenine Formula: C10H13N5O4 Dimensions: 1.6X3X1.6, Weight: 0.22, Cas#: 58-61-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $53.65
  17. Folic Acid, Pteroylglutamic acid, Vitamin M, 1 Kilogram CAS# 59-30-3
    Manufacturer: Research Products International
    Mol. Wt:441.4 Common Name: [Pteroylglutamic acid] [Vitamin M] Formula: C19H19N7O6 Dimensions: 8.13 x 7.25 x 8.13, Weight: 2.9, Cas#: 59-30-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $468.80
  18. HEPES, Free Acid, N-, 2-Hydroxyethyl, piperazine N'-, 2-ethanesulfonic acid, , 1 Kilogram CAS# 7365-45-9
    Manufacturer: Research Products International
    Mol. Wt:238.3 Common Name: [N-(2-Hydroxyethyl) piperazine N'-(2-ethanesulfonic acid)] Formula: C8H18N2O4S Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.41, Cas#: 7365-45-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $421.10
  19. Potassium Bicarbonate, ACS Grade, 500 Grams CAS# 298-14-6
    Manufacturer: Research Products International
    Mol. Wt:100.12 Common Name: Formula: CHKO3 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 298-14-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $94.80
  20. n-Octylglucoside [n-Octyl-B-D-glucopyranoside], 50 Grams CAS# 29836-26-8
    Manufacturer: Research Products International
    Mol. Wt:292.4 Common Name: n-Octyl-β-D-glucopyranoside Formula: C14H28O6 Dimensions: 2.00 x 3.88 x 2.00, Weight: 0.39, Cas#: 29836-26-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,181.20
  21. Aztreonam, 100 MG CAS# 78110-38-0
    Manufacturer: Research Products International
    Mol. Wt:435.43 Common Name: Formula: C13H17N5O8S2 Dimensions: 1.25 X 1.75 X 1.25, Weight: 0.03, Cas#: 78110-38-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $222.20
  22. Lithium Dodecyl Sulfate, LDS, 25 Grams CAS# 2044-56-6
    Manufacturer: Research Products International
    Mol. Wt:272.33 Common Name: LDS Formula: C12H25LiO4S Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 2044-56-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $83.45
  23. 5-FOA, 5-Fluoroorotic acid, 10 Grams CAS# 703-95-7
    Manufacturer: Research Products International
    Mol. Wt:174.1 Common Name: 5-Fluoroorotic acid Formula: C5H3FN2O4 Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.13, Cas#: 703-95-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $489.50
  24. L-Ornithine HCl , L-2-5-Diaminopentanoic Acid, , 25 Grams CAS# 3184-13-2
    Manufacturer: Research Products International
    Mol. Wt:168.6 Common Name: L-2-5-Diaminopentanoic Acid Formula: C5H12N2O2-HCl Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 3184-13-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $30.65
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