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. 5-Bromo-2'-Deoxyuridine, 500 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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    $46.00
  2. 1, 10-Phenanthroline, 10 Grams CAS# 5144-89-8
    Manufacturer: Research Products International
    Mol. Wt:198.2 Common Name: Formula: C12H8N2-H2O Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.13, Cas#: 5144-89-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $64.15
  3. D-(+)-Trehalose Dihydrate, 3 Kilograms CAS# 6138-23-4
    Manufacturer: Research Products International
    Mol. Wt:378.3 Common Name: Formula: C12H22O11-2H2O Dimensions: 8.13 x 7.25 x 8.13, Weight: 7.18, Cas#: 6138-23-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $3,486.20
  4. L-Ornithine HCl , L-2-5-Diaminopentanoic Acid, , 100 Grams CAS# 3184-13-2
    Manufacturer: Research Products International
    Mol. Wt:168.6 Common Name: L-2-5-Diaminopentanoic Acid Formula: C5H12N2O2-HCl Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 3184-13-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $52.25
  5. Myricetin, 100 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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    $365.50
  6. ACES [N-(2-Acetamido)-2-aminoethane], 5 Kilograms CAS# 7365-82-4
    Manufacturer: Research Products International
    Mol. Wt:182.2 Common Name: N-(2-Acetamido)-2-aminoethane Formula: C4H10N2O4S Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.4, Cas#: 7365-82-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,922.95
  7. CHAPS, 3-, 3-Cholamidopropyl, -dimethylammonio, -1-propanesulfonate, 5 Grams CAS# 26926106
    Manufacturer: Research Products International
    Mol. Wt:614.9 Common Name: 3-[(Cholamidopropyl) dimethylammonio]-1-propanesulfonate Formula: C32H58N2O7S Dimensions: 1.00 x 3.00 x 1.00, Weight: 0.11, Cas#: 26926106 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $149.55
  8. BIS-TRIS Propane, 1,3-Bis , TRIS, hydroxymethyl, methylamino, propane, 1 Kilogram CAS# 64431-96-5
    Manufacturer: Research Products International
    Mol. Wt:282.3 Common Name: 1,3-Bis(Tris(Hydroxymethyl) methylamino)propane Formula: C11H26N2O6 Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.41, Cas#: 64431-96-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $870.00
  9. bis-TRIS, bis-, 2-hydroxyethyl, aminotris, hydroxymethyl, methane, 100 Grams CAS# 6976-37-0
    Manufacturer: Research Products International
    pH (1%, water @ 25°C): 8.8-9.6 pKa (@ 25°C): 6.45-6.65 Melting Range: 102-106°C Water (KF): <1.0% Mol. Wt:209.2 Common Name: bis(2-Hydroxyethyl)aminotris (hydroxymethyl)methane Formula: C8H19NO5 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 6976-37- (1 per EA)
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    $81.45
  10. Lecithin, Refined From Soybeans, 5 Kilograms CAS# 8002-43-5
    Manufacturer: Research Products International
    Mol. Wt: Common Name: L-a-Phosphatidylcholine Formula: Dimensions: 10.00 x 11.25 x 10.00, Weight: 12.72, Cas#: 8002-43-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $5,307.00
  11. NADP [B-Nicotinamide Adenine Dinucleotide Phosphate, Oxidized Form, Monosodium Salt Trihydrate], 1 Gram CAS# 1184-16-3
    Manufacturer: Research Products International
    Mol. Wt:801.4 Common Name: β-Nicotinamide Adenine Dinucleotide Phosphate, Oxidized Form, Monosodium Salt Trihydrate Formula: C21H27N7O17P3Na - 2H2O Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 1184-16-3 Research or further manufacturing use (1 per EA)
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    $285.20
  12. Pyruvic Acid Sodium Salt, Sodium Pyruvate, 25 Grams CAS# 113-24-6
    Manufacturer: Research Products International
    Mol. Wt:110.04 Common Name: Sodium Pyruvate Formula: C3H3NaO3 Dimensions: 5.11 x 5.11 x 5.11, Weight: 1, Cas#: 113-24-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $73.50
  13. Lysozyme from Chicken Egg White, Salt Free, 10 Grams CAS# 12650-88-3
    Manufacturer: Research Products International
    Dimensions: 2.50 x 4.75 x 2.50, Weight: 0.42, Cas#: 12650-88-3 Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $364.65
  14. MES Sodium Salt, 2-, N-Morpholino, ethanesulfonic acid, sodium salt, 500 Grams CAS# 71119-23-8
    Manufacturer: Research Products International
    Mol. Wt:217.22 Common Name: [2-(N-Morpholino)ethanesulfonic acid] sodium salt] Formula: C6H12NNaO4S Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.24, Cas#: 71119-23-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $391.60
  15. L-Tryptophan, 100 Grams CAS# 73-22-3
    Manufacturer: Research Products International
    Mol. Wt:204.2 Common Name: Formula: C11H12N2O2 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 73-22-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $169.70
  16. MOPS, Sodium Salt [3-(N-Morpholino)-propanesulfonic acid sodium salt], 50 Grams CAS# 71119-22-7
    Manufacturer: Research Products International
    Mol. Wt:231.3 Common Name: 3-(N-Morpholino)propanesulfonic acid sodium salt Formula: C7H14NO4SNa Dimensions: 2.00 x 3.88 x 2.00, Weight: 0.39, Cas#: 71119-22-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $35.50
  17. MTT [Thiazolyl Blue Tetrazolium Bromide], 5 Grams CAS# 298-93-1
    Manufacturer: Research Products International
    Mol. Wt:414.3 Common Name: Thiazolyl Blue Tetrazolium Bromide Formula: C18H16N5SBr Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.12, Cas#: 298-93-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $363.80
  18. Glycerol, 1 Liter CAS# 56-81-5
    Manufacturer: Research Products International
    Mol. Wt:92.1 Common Name: Formula: C3H8O3 Dimensions: 3.50 x 8.50 x 3.50, Weight: 2.9, Cas#: 56-81-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $55.05
  19. L-Cysteine Hydrochloride Monohydrate, 5 Kilograms CAS# 7048-04-6
    Manufacturer: Research Products International
    Mol. Wt:175.6 Common Name: Formula: C3H7NO2S-HCl-H2O Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.43, Cas#: 7048-04-06 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,380.75
  20. Potassium Phosphate, Dibasic, 5 Kilograms CAS# 7758-11-4
    Manufacturer: Research Products International
    Mol. Wt:174.2 Common Name: Formula: K2HPO4 Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.4, Cas#: 7758-11-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $428.50
  21. MOPS, Sodium Salt [3-(N-Morpholino)-propanesulfonic acid sodium salt], 1 Kilogram CAS# 71119-22-7
    Manufacturer: Research Products International
    Mol. Wt:231.3 Common Name: 3-(N-Morpholino)propanesulfonic acid sodium salt Formula: C7H14NO4SNa Dimensions: 4.88 x 6.00 x 4.88, Weight: 2.4, Cas#: 71119-22-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $348.20
  22. L-Glutathione, reduced, free acid, 25 Grams CAS# 70-18-8
    Manufacturer: Research Products International
    Mol. Wt:307.3 Common Name: Formula: C10H17N3O6S Dimensions: 2.00 x 3.88 x 2.00, Weight: 0.33, Cas#: 70-18-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $177.10
  23. D-Melibiose Monohydrate, 25 Grams CAS# 585-99-9
    Manufacturer: Research Products International
    Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:360.31 Common Name: Formula: C12H22O11-H2O Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 585-99-9 Research or further manufacturing use only, not (1 per EA)
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    $338.25
  24. TRYPSIN, 5 GRAM CAS# 9002-07-7
    Manufacturer: Research Products International
    Trypsin Content:?>2,500 U/mg Product usually ships within 24 hours. This product is sold for laboratory research use only. Dimensions: 3.38 x 4.63 x 3.38, Weight: 0.11, Cas#: 9002-07-07 Research or further manufacturing use only, not for food or drug use (1 per EA)
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    $250.00
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