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Key Documents

L021000

Sigma-Aldrich

DCA Deblock

with Dichloromethane

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About This Item

UNSPSC Code:
41116004
NACRES:
NA.21

type

for DNA synthesis
for DNA synthesis

product line

Proligo Reagents

form

liquid

storage condition

dry at room temperature

concentration

42.2-51.6 g/L (DCA content, titration)

impurities

≤200 ppm water content (Karl Fischer)

color

clear

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General description

Deblock solution contains dichloroacetic acid (DCA) in dichloromethane that assists in the removal of the dimethoxytrityl (DMT) protecting group from the 5′hydroxyl moiety of nucleotides already incorporated into the growing nucleic acid, before the addition of the next phosphoramidite. Removal of the DMT allows the unprotected 5′hydroxyl moiety to react with a new phosphoramidite in a subsequent extension reaction.

Preparation Note

Dicloromethane / Dichloroacetic acid 97/3 (v/v)

Other Notes

Deblock solution containing dichloroacetic acid (DCA) in dichloromethane removes the dimethoxytrityl (DMT) protecting group from the 5′hydroxyl moiety of nucleotides already incorporated into the growing nucleic acid, prior to the addition of the next phosphoramidite. Removal of the DMT allows the unprotected 5′hydroxyl moiety to react with a new phosphoramidite in a subsequent extension reaction.

Signal Word

Danger

Hazard Classifications

Carc. 2 - Eye Dam. 1 - Lact. - Repr. 1B - Skin Irrit. 2 - STOT SE 3

Target Organs

Central nervous system

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
HMBJ3221
HMBJ3082
HMBJ3081
HMBJ2800
HMBJ2799

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