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. L-Cysteine Hydrochloride Monohydrate, 1 Kilogram CAS# 7048-04-6
    Manufacturer: Research Products International
    Mol. Wt:175.6 Common Name: Formula: C3H7NO2S-HCl-H2O Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.38, Cas#: 7048-04-06 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $309.90
  2. SSPE BUFFER, 1 LITER POWDER BLEND, NO LIQUID
    Manufacturer: Research Products International
    Dimensions: 3.50 x 3.75 x 3.50 Weight: 0.56 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $24.45
  3. Lactic Acid 88% Solution, 1 Liter CAS# 50-21-5
    Manufacturer: Research Products International
    Mol. Wt:90.08 Common Name: Formula: C3H6O3 Dimensions: 3.50 x 8.50 x 3.50, Weight: 2.9, Cas#: 50-21-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $53.65
  4. Bile Salts Number 3, 500 Grams
    Manufacturer: Research Products International
    Product usually ships within 3-5 days. This product is sold for laboratory research use only. Dimensions: 3.50 x 7.00 x 3.50 Weight: 1.23 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $665.15
  5. Ertapenem Sodium Salt, 5 Grams CAS# 153773-82-1
    Manufacturer: Research Products International
    Mol. Wt:497.5 Common Name: Formula: C22H24N3NaO7S Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 153773-82-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $605.55
  6. Trisodium Citrate, Dihydrate, Citric Acid, Trisodium Dihydrate, 1 Kilogram CAS# 16132-04-3
    Manufacturer: Research Products International
    Mol. Wt:294.1 Common Name: Citric Acid, Trisodium Dihydrate Formula: C6H5Na3O7-2H2O Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 6132-04-03 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $38.35
  7. MOPSO [3-(N-Morpholino)-2-hydroxypropanesulfonic acid], 25 Grams CAS# 68399-77-9
    Manufacturer: Research Products International
    Mol. Wt:225.3 Common Name: 3-(N-Morpholino)2-hydroxypropanesulfonic acid Formula: C7H15NO5S Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 68399-77-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $38.35
  8. L-Histidine, 100 Grams CAS# 71-00-1
    Manufacturer: Research Products International
    Mol. Wt:155.2 Common Name: Formula: C6H9N3O2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 71-00-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $71.80
  9. L-Arginine, 10 Kilograms CAS# 74-79-3
    Manufacturer: Research Products International
    Mol. Wt:174.2 Common Name: Formula: C6H14N4O2 Dimensions: 10.00 x 11.25 x 10.00, Weight: 23.72, Cas#: 74-79-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,623.35
  10. Glycerol, ACS, 500 ML CAS# 56-81-5
    Manufacturer: Research Products International
    Mol. Wt:92.1 Common Name: Formula: C3H8O3 Dimensions: 3.00 x 6.00 x 3.00, Weight: 1.45, Cas#: 56-81-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $44.30
  11. 5-Bromo-2'-Deoxyuridine, 5 Grams CAS# 59-14-3
    Manufacturer: Research Products International
    Mol. Wt:307.1 Common Name: Formula: C9H11BrN2O5 Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.17, Cas#: 59-14-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $296.00
  12. Taurine, 2-Aminoethanesulfonic acid, 100 Grams CAS# 107-35-7
    Manufacturer: Research Products International
    Mol. Wt:125.15 Common Name: 2-Aminoethanesulfonic acid Formula: C2H7NO3S Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 107-35-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $64.15
  13. Creatine Phosphate Disodium Salt Tetrahydrate, 1 Kilogram CAS# 922-32-7
    Manufacturer: Research Products International
    Purity: >97% Soluble in: Water Store at: Room Temperature Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:327.14 Common Name: Formula: C4H8N3O5PNa2-4H2O Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.41, C (1 per EA)
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    $5,839.05
  14. Uracil, 1 Kilogram CAS# 66-22-8
    Manufacturer: Research Products International
    Mol. Wt:112.09 Common Name: Formula: C4H4N2O2 Dimensions: 8.13 x 7.25 x 8.13, Weight: 2.9, Cas#: 66-22-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $444.40
  15. Pyruvic Acid Sodium Salt, Sodium Pyruvate, 500 Grams CAS# 113-24-6
    Manufacturer: Research Products International
    Mol. Wt:110.04 Common Name: Sodium Pyruvate Formula: C3H3NaO3 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.13, Cas#: 113-24-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $194.40
  16. Citric Acid, Monohydrate, ACS Grade, 500 Grams CAS# 5949-29-1
    Manufacturer: Research Products International
    Mol. Wt:210.14 Common Name: Formula: C6H8O7H2O Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 5949-29-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $46.00
  17. Rubidium Chloride, 10 Grams CAS# 7791-11-9
    Manufacturer: Research Products International
    Mol. Wt:120.9 Common Name: Formula: RbCl Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.13, Cas#: 7791-11-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $97.05
  18. DNA Markers , Low Range, 250 bp Ladder, 1 Milliliter
    Manufacturer: Research Products International
    Dimensions: 1.25 x 1.75 x 1.25 Weight: 0.06 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $135.35
  19. L-Arginine Monohydrochloride, 3 Kilograms CAS# 1119-34-2
    Manufacturer: Research Products International
    Mol. Wt:210.7 Common Name: Formula: C6H14N4O2 - HCl Dimensions: 8.13 x 7.25 x 8.13, Weight: 7.19, Cas#: 1119-34-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $942.65
  20. Myricetin, 25 MG CAS# 529-44-2
    Manufacturer: Research Products International
    Product usually ships within 24 hours. This product is sold for laboratory research only. Mol. Wt:318.24 Common Name: Formula: C15H10O8 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 529-44-2 Research or further manufacturing use only, not for food (1 per EA)
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    $132.80
  21. 5-FOA, 5-Fluoroorotic acid, 5 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: 0.12, Cas#: 703-95-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $285.20
  22. L-Phenylalanine, 100 Grams CAS# 63-91-2
    Manufacturer: Research Products International
    Mol. Wt:165.2 Common Name: Formula: C9H11NO2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 63-91-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $73.50
  23. Aztreonam, 1 Gram 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: 0.04, Cas#: 78110-38-0 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $797.95
  24. PIPES FREE ACID ULTRAPURE, 100GM CAS# 5625-37-6
    Manufacturer: Research Products International
    Mol. Wt:302.4 Common Name: Piperazine-N-N'-bis(2-ethanesulfonic acid) Formula: C8H18N2O6S2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 5625-37-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $109.00
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