Merck
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L050084

Sigma-Aldrich

Cap B

product line

Proligo Reagents

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L050030L050031L050083
Sigma-Aldrich

Sigma-Aldrich

L050084

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050030

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050031

Cap B

Sigma-Aldrich

Sigma-Aldrich

L050083

Cap B

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

product line

Proligo Reagents

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

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 / Pyridine 8/1/1 (v/v/v)

Other Notes

Cap B solution, containing tetrahydrofuran (THF), pyridine and N-methylimidazole (NMI), 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.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - 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 2

Flash Point(F)

6.1 °F

Flash Point(C)

-14.4 °C


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