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. POLYOXYETHYLENESORBITAN, MONOOLEATE , TWEEN 80, 1 LITER CAS# 9005-65-6
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Polyoxyethylenesorbitan, Monooleate Formula: Dimensions: 3.50 x 8.50 x 3.50, Weight: 2.4, Cas#: 9005-65-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $63.00
  2. L-VALINE, USP GRADE, 500GM CAS# 72-18-4
    Manufacturer: Research Products International
    Mol. Wt:117.2 Common Name: Formula: C5H11NO2 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 72-18-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $214.55
  3. Antipain, 5 MG CAS# 37682-72-7
    Manufacturer: Research Products International
    Mol. Wt:677.6 Common Name: Formula: C27H44N10O6 - 2HCl Dimensions: 1.25 X 1.75 X 1.25, Weight: 0.06, Cas#: 37682-72-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $64.15
  4. n-Octylglucoside [n-Octyl-B-D-glucopyranoside], 25 Grams CAS# 29836-26-8
    Manufacturer: Research Products International
    Mol. Wt:292.4 Common Name: n-Octyl-β-D-glucopyranoside Formula: C14H28O6 Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 29836-26-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,093.90
  5. L-Glutathione, reduced, free acid, 100 Grams CAS# 70-18-8
    Manufacturer: Research Products International
    Mol. Wt:307.3 Common Name: Formula: C10H17N3O6S Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 70-18-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $583.15
  6. Aztreonam, 25 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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    $73.50
  7. Pyridoxal Hydrochloride, 1 Kilogram CAS# 65-22-5
    Manufacturer: Research Products International
    Mol. Wt:203.62 Common Name: Formula: C8H9NO3 HCl Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.4, Cas#: 65-22-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,037.05
  8. L-Lysine Hydrochloride, 100 Grams CAS# 657-27-2
    Manufacturer: Research Products International
    Mol. Wt:182.7 Common Name: Formula: C6H14N2O2 - HCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 657-27-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $41.75
  9. Genistein, 100 MG CAS# 446-72-0
    Manufacturer: Research Products International
    Mol. Wt:270.2 Common Name: 4',5,7-Trihydroxyisoflavone Formula: C15H10O5 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 446-72-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $198.65
  10. DIPSO, 3-, N,N-Bis, 2-Hydroxyethyl, amino, -2-hydroxypropane sulfonic acid, 100 Grams CAS# 68399-80-4
    Manufacturer: Research Products International
    pKa (25°C): 7.6 Heavy Metals: <0.0005% The working pH range in aqueous solution is 7.0-8.2 Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:243.3 Common Name: 3-(N,N-Bis(2-hydroxyethyl)amino)-2-hydroxyp (1 per EA)
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    $189.85
  11. Succinyl Chloride, 1 Kilogram CAS# 543-20-4
    Manufacturer: Research Products International
    Mol. Wt:154.98 Common Name: Formula: C4H4Cl2O2 Dimensions: 8.13 x 7.25 x 8.13, Weight: 2.9, Cas#: 543-20-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $444.40
  12. TRIS, ACS Grade, 1 Kilogram CAS# 77-86-1
    Manufacturer: Research Products International
    Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.25, Cas#: 77-86-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $84.85
  13. Leupeptin Hemisulfate, 5 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: 0.03, Cas#: 103476-89-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $50.80
  14. Chymostatin, 1 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: 1.25 x 1.75 x 1.25, Weight: 0.06, Cas#: 9076-44-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $67.55
  15. L-Arginine Monohydrochloride, 100 Grams CAS# 1119-34-2
    Manufacturer: Research Products International
    Mol. Wt:210.7 Common Name: Formula: C6H14N4O2 - HCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 1119-34-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  16. Putrescine Dihydrochloride, 1,4-Diaminobutane, 100 Grams CAS# 333-93-7
    Manufacturer: Research Products International
    Mol. Wt:161.1 Common Name: 1,4-Diaminobutane Formula: C4H12N2 - 2HCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 333-93-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $620.30
  17. 5-Bromo-2'-Deoxyuridine, 250 MG CAS# 59-14-3
    Manufacturer: Research Products International
    Mol. Wt:307.1 Common Name: Formula: C9H11BrN2O5 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 59-14-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $27.85
  18. Casamino Acids, Casein acid hydrolysate, 2 Kilograms CAS# 91079-40-2
    Manufacturer: Research Products International
    Mol. Wt: Common Name: Casein acid hydrolysate Formula: Dimensions: 4.88 x 10.25 x 4.88, Weight: 4.68, Cas#: 91079-40-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $524.40
  19. 5-FOA, 5-Fluoroorotic acid, 1 Grams CAS# 703-95-7
    Manufacturer: Research Products International
    Mol. Wt:174.1 Common Name: 5-Fluoroorotic acid Formula: C5H3FN2O4 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.04, Cas#: 703-95-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $132.80
  20. D-Gluconic Acid Potassium Salt, 1 Kilogram CAS# 299-27-4
    Manufacturer: Research Products International
    Purity: >99% Soluble in water Store at room temperature Cas No.?299-27-4 Usually ships within 24 hours.? Mol. Wt:234.2 Common Name: Formula: C6H11KO7 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 299-27-4 Research or further manufacturing use on (1 per EA)
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    $107.55
  21. DIPSO, 3-, N,N-Bis, 2-Hydroxyethyl, amino, -2-hydroxypropane sulfonic acid, 25 Grams CAS# 68399-80-4
    Manufacturer: Research Products International
    pKa (25°C): 7.6 Heavy Metals: <0.0005% The working pH range in aqueous solution is 7.0-8.2 Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:243.3 Common Name: 3-(N,N-Bis(2-hydroxyethyl)amino)-2-hydroxyp (1 per EA)
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    $64.15
  22. L-Arginine Monohydrochloride, 500 Grams CAS# 1119-34-2
    Manufacturer: Research Products International
    Mol. Wt:210.7 Common Name: Formula: C6H14N4O2 - HCl Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 1119-34-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $164.60
  23. D-Fructose, Levulose, 1 Kilogram CAS# 57-48-7
    Manufacturer: Research Products International
    Mol. Wt:180.16 Common Name: Levulose Formula: C6H12O6 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 57-48-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $64.15
  24. HEPES, Free Acid, N-, 2-Hydroxyethyl, piperazine N'-, 2-ethanesulfonic acid, , 250 Grams 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: 3.50 x 3.75 x 3.50, Weight: 0.65, Cas#: 7365-45-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $168.30
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