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. Ficoll 400, Polysucrose 400, 100 Grams CAS# 26873-85-8
    Manufacturer: Research Products International
    Mol. Wt:400000 Common Name: Polysucrose 400 Formula: Dimensions: 2.50 x 4.75 x 2.50, Weight: 0.62, Cas#: 26873-85-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $348.20
  2. EGTA, Ethylene glycol-bis, 2-aminoethylether, -N,N,N',N'-tetraacetic acid, 500 Grams CAS# 67-42-5
    Manufacturer: Research Products International
    Mol. Wt:380.35 Common Name: Ethylene glycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid Formula: C14H24N2O10 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.13, Cas#: 67-42-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,339.05
  3. PVDF MEMBRANE STRIPPING BUFFER 4X, 1 LITER
    Manufacturer: Research Products International
    Dimensions: 5.25 x 7.50 x 2.25 Weight: 2.63 - Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $137.10
  4. HEPES, Free Acid [N-(2-Hydroxyethyl) piperazine N'-(2-ethanesulfonic acid)], 25 Kilograms 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: 13.50 x 13.00 x 16.50, Weight: 60, Cas#: 7365-45-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $3,543.20
  5. Sodium Phosphate Dibasic, Anhydrous, 1 Kilogram CAS# 7558-79-4
    Manufacturer: Research Products International
    Mol. Wt:142 Common Name: Formula: Na2HPO4 Dimensions: 4.50 x 6.00 x 4.50, Weight: 2.4, Cas#: 7558-79-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $92.25
  6. HEPPS, N-, 2-Hydroxyethyl, piperazine-N'-, 3-propane sulfonic acid, , EPPS, 100 Grams CAS# 5169070
    Manufacturer: Research Products International
    Mol. Wt:252.3 Common Name: HEPPS [N-(2-Hydroxyethyl)piperazine-N'-(3-propane sulfonic acid)] [EPPS] Formula: C9H20N2O4S Dimensions: 3.50 x 3.75 x 3.50, Weight: 1.24, Cas#: 5169070 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $107.55
  7. Imidazole [Glyoxaline] [1,3-Diaza-2-,4-cyclopentadiene], 5 Kilograms CAS# 288-32-4
    Manufacturer: Research Products International
    Mol. Wt:68.1 Common Name: [Glyoxaline] [1,3-Diaza-2,4-cyclopentadiene] Formula: C3H4N2 Dimensions: 10.00 x 11.25 x 10.00, Weight: 13, Cas#: 288-32-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $2,611.10
  8. Calcium D-Pantothenate, 1 Kilogram CAS# -643703
    Manufacturer: Research Products International
    Mol. Wt:476.54 Common Name: Formula: C18H32CaN2O10 Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.42, Cas#: -643703 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $940.35
  9. THYMIDINE, 100 GRAMS CAS# 50-89-5
    Manufacturer: Research Products International
    Mol. Wt:242.23 Common Name: Thymine deoxyriboside Formula: C10H14N2O5 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 50-89-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $365.50
  10. APS Tablets, 100 Tab CAS# 7727-54-0
    Manufacturer: Research Products International
    Dimensions: 3.75 x 3.50 x 3.50 Weight: 0.31 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $349.30
  11. Coelenterazine-H, 1 MG CAS# 50909-86-9
    Manufacturer: Research Products International
    Mol. Wt:407.5 Common Name: Formula: C26H21N3O2 Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.03, Cas#: 50909-86-9 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $117.50
  12. Lysozyme from Chicken Egg White, Salt Free, 5 Grams CAS# 12650-88-3
    Manufacturer: Research Products International
    Dimensions: 2.00 x 3.88 x 2.00, Weight: 0.29, Cas#: 12650-88-3 Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $225.30
  13. Albumin, Bovine Fraction V, BSA, 1 Kilogram CAS# 9048-46-8
    Manufacturer: Research Products International
    Mol. Wt: Common Name: BSA Formula: Dimensions: 4.88 x 7.25 x 4.88, Weight: 2.42, Cas#: 9048-46-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $1,413.10
  14. Guanidine Hydrochloride, 5 Kilograms CAS# 50-01-1
    Manufacturer: Research Products International
    Purity:>99% Toxicity: LD50 > 500mg/kg. Soluble in water Store at room temperature Cas No.?50-01-1 Usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:95.5 Common Name: Formula: CH5N3-HCl Dimensions: 10.00 x (1 per EA)
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    $1,356.05
  15. L-Ornithine HCl , L-2-5-Diaminopentanoic Acid, , 500 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 7.00 x 3.50, Weight: 1.24, Cas#: 3184-13-2 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $222.20
  16. TRIS, Crystals, 50 LB CAS# 77-86-1
    Manufacturer: Research Products International
    Dimensions: 15.50 x 5.00 x 23.00 Weight: 50 - Research or further manufacturing use only, not for food or drug use. (1 per EA )
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    $1,003.58
  17. Cytidine, 100 Grams CAS# 65-46-3
    Manufacturer: Research Products International
    Mol. Wt:243.22 Common Name: Formula: C9H13N3O5 Dimensions: 3.50 x 7.00 x 3.50, Weight: 0.32, Cas#: 65-46-3 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $320.65
  18. L-Threonine, 500 Grams CAS# 72-19-5
    Manufacturer: Research Products International
    Mol. Wt:119.2 Common Name: Formula: C4H9NO3 Dimensions: 3.50 x 7.00 x 3.50, Weight: 1.23, Cas#: 72-19-5 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $444.40
  19. D-SALICIN, 100 GR CAS# 138-52-3
    Manufacturer: Research Products International
    Product usually ships within 24 hours. This product is sold for laboratory research use only. Mol. Wt:286.3 Common Name: Formula: C13H18O7 Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 138-52-3 Research or further manufacturing use only, not for f (1 per EA)
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    $419.10
  20. MES Sodium Salt, 2-, N-Morpholino, ethanesulfonic acid, sodium salt, 100 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 3.75 x 3.50, Weight: 0.32, Cas#: 71119-23-8 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $152.40
  21. Lithium Dodecyl Sulfate, LDS, 100 Grams CAS# 2044-56-6
    Manufacturer: Research Products International
    Mol. Wt:272.33 Common Name: LDS Formula: C12H25LiO4S Dimensions: 3.50 x 3.75 x 3.50, Weight: 0.32, Cas#: 2044-56-6 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $222.20
  22. BES, N,N-bis, 2-Hydroxyethyl, -2-aminoethanesulfonic acid, 25 Grams CAS# 10191-18-1
    Manufacturer: Research Products International
    Mol. Wt:213.2 Common Name: N,N-Bis(2-hydroxyethyl)-2-aminoethane sulfonic acid Formula: C6H15NO5S Dimensions: 1.63 x 3.00 x 1.63, Weight: 0.22, Cas#: 10191-18-1 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $38.35
  23. 6-PHOSPHOGLUCONIC ACID, TRISODIUM SALT, 1 GRAM CAS# 53411-70-4
    Manufacturer: Research Products International
    Mol. Wt:378.1 Common Name: Formula: C6H10Na3O10P - 2H2O Dimensions: 1.25 x 1.75 x 1.25, Weight: 0.04, Cas#: 53411-70-4 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $436.45
  24. MOPS, Sodium Salt [3-(N-Morpholino)-propanesulfonic acid sodium salt], 2.5 Kilograms CAS# 71119-22-7
    Manufacturer: Research Products International
    Mol. Wt:231.3 Common Name: 3-(N-Morpholino)propanesulfonic acid sodium salt Formula: C7H14NO4SNa Dimensions: 10.00 x 7.50 x 10.00, Weight: 12.4, Cas#: 71119-22-7 Research or further manufacturing use only, not for food or drug use. (1 per EA)
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    $848.70
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