Merck
  • L050030
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L050030

Sigma-Aldrich

Cap B

configured for ABI

NACRES:
NA.21

type

for DNA synthesis

Quality Level

product line

Proligo Reagents

storage condition

dry at room temperature

impurities

≤200 ppm water content (Karl Fischer)

color

clear

suitability

conforms to structure (GC, Formulation)

compatibility

configured for ABI

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1 of 4

This Item
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Sigma-Aldrich

Sigma-Aldrich

L050030

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050082

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050084

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050080

Cap B

type

for DNA synthesis

type

-

type

-

type

for DNA synthesis

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

storage condition

dry at room temperature

storage condition

-

storage condition

-

storage condition

dry at room temperature

impurities

≤200 ppm water content (Karl Fischer)

impurities

-

impurities

-

impurities

≤200 ppm water content (Karl Fischer)

color

clear

color

-

color

-

color

clear

suitability

conforms to structure (GC, Formulation)

suitability

-

suitability

-

suitability

conforms to structure (GC, Formulation)

General description

Cap B solution contains tetrahydrofuran (THF), pyridine, and N-methylimidazole (NMI). It is mixed in situ with Cap A solution during the capping (acetylation) reaction. Pyridine is applied as a mild base while NMI provides a powerful acylation catalyst.

Preparation Note

Tetrahydrofurane / N-Methylimidazole 84/16 (v/v)

Other Notes

Cap B solution, containing tetrahydrofuran (THF) and N-methylimidazole (NMI), is mixed in situ with Cap A solution during the capping (acetylation) reaction. Lutidine is applied as a mild base while NMI provides a powerful acylation catalyst.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

6.1 °F

Flash Point(C)

-14.4 °C

Certificate of Analysis

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Certificate of Origin

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